HG/T 2325-1992 Granular lead monoxide for use in the electronics industry
Some standard content:
Chemical Industry Standard of the People's Republic of China
HG2325-92
Granular Lead Monoxide for Electronic Industry
Published on June 1, 1992
Ministry of Chemical Industry of the People's Republic of China
Implemented on September 1, 1992
WChemical Industry Standard of the People's Republic of China
Granular Lead Monoxide for Electronic Industry
Subject Content and Scope of Application
HG2325-92
This standard specifies the technical requirements, test methods, inspection rules and marking, packaging, transportation and storage requirements for granular lead monoxide for electronic industry.
This standard applies to granular lead monoxide obtained by high-temperature oxidation and granulation of electrolytic lead. This product is mainly used as a raw material for the production of leaded glass in the electronics industry.
Molecular formula: PbO
Relative molecular mass: 223.2 (according to the international relative atomic weight in 1989) Reference standards
GB1250
GB3049
GB6003
GB6678
GB6682
GB8946
Packaging, storage and transportation diagrams
Chemical reagents Titration analysis (volume analysis) Preparation of standard solutions Chemical reagents
Impurity determination Preparation of standard solution
Chemical reagents
Preparation of preparations and products used in test methodsExpression and determination method of limit valuesGeneral method for determination of iron content in chemical productsPhenanthroline spectrophotometry
Test sieves
General rules for sampling of chemical products
Specifications for laboratory water
Plastic woven bags
GB10454
3 Technical requirements
Flexible container bags
3.1 Appearance: orange-red to orange-yellow granules. 3.2 Granular lead monoxide for use in the electronics industry shall meet the requirements of the following table: Item
Lead oxide (PbO) content, %
Metallic lead (Pb) content, %
Iron (as Fe2O) content, %
Particle size (3.35mm test sieve residue)
(106μm test sieve residue), %
Approved by the Ministry of Chemical Industry of the People's Republic of China on June 1, 1992
Superior product
Implementation on September 1, 1992
W.bzsoso:com4Test method
HG2325-92
The reagents and water used in this standard, unless otherwise specified, refer to analytical pure reagents and grade 3 water specified in GB6682. The standard solutions, impurity standard solutions, preparations and products required in the test shall be prepared in accordance with the provisions of GB601, GB602 and GB603 unless otherwise specified.
4.1 Determination of lead monoxide content
4.1.1 Summary of the method
The sample is dissolved in acetic acid, and the insoluble matter such as lead is removed by filtration. At pH 5-6, it is titrated with disodium ethylenediaminetetraacetic acid standard titration solution using xylenol orange as an indicator.
4.1.2 Reagents and materials
4.1.2.1 Acetic acid (GB676) solution: 1+3; 4.1.2.2 Acetic acid (GB676) solution: 1+9; 4.1.2.3 Ammonia (GB631) solution: 1+3; 4.1.2.4 Potassium dichromate (GB642) solution: 5g/L; Hexamethylenetetramine (GB1400) solution: 200g/L, use nitric acid (1+9) solution to adjust the pH solution to 5-6 (use 4.1.2.5
precision pH test paper for testing).
4.1.2.6 Disodium ethylenediaminetetraacetic acid (GB1401): standard titration solution: c (EDTA) about 0.02mol/L; 4.1.2.7 Xylenol orange indicator solution: 5g/L. 4.1.3 Analysis steps
Weigh about 13g of sample, accurate to 0.001g, place in a 250mL beaker, add 65mL of acetic acid solution (4.1.2.1), and heat to dissolve. Filter with medium-speed filter paper, wash with acetic acid solution (4.1.2.2) three times, 5mL each time, and then wash with hot water until there is no lead ion (check with potassium dichromate solution). After cooling, collect the filtrate and washings in a 1000mL volumetric flask, dilute with water to the scale, and shake well. Prepare test solution A.
Save the filter paper and residue for the determination of metallic lead content. Pipette 10mL of test solution A, place in a 250mL conical flask, add 100mL of water, adjust pH to 5-6 with ammonia solution (check with precision pH test paper), add 10mL of hexamethylenetetramine solution, 4 drops of xylenol orange indicator, and titrate with disodium ethylenediaminetetraacetic acid standard titration solution until the solution turns bright yellow. 4.1.4 Expression of analytical results
The content of lead monoxide (PbO) (X1) expressed as mass percentage is calculated according to formula (1): Xi=.VX0. 223 2,
m×1000
2232c·V
wherein: c is the actual concentration of the standard titration solution of disodium ethylenediaminetetraacetic acid, mol/L; V is the volume of the standard titration solution of disodium ethylenediaminetetraacetic acid consumed in the titration, mL, (1)
m is the mass of the sample, g,
0.2232 is the mass of lead monoxide equivalent to 1.00 mL of the standard titration solution of disodium ethylenediaminetetraacetic acid [c (EDTA) = 1.000 mol/L), expressed in grams.
4.1.5 Allowable difference
The arithmetic mean of the parallel determination results is taken as the determination result; the absolute difference of the parallel determination results shall not exceed 0.2%. 4.2 Determination of metal lead content
4.2.1 Method summary
Metal lead is dissolved in nitric acid and titrated with disodium ethylenediaminetetraacetic acid standard solution at pH 56 using xylenol orange as an indicator.
4.2.2 Reagents and materials
4.2.2.1 Nitric acid (GB626) solution: 1+3; 4.2.2.2 Ammonia (GB631) solution 1+1; HG2325-92
4.2.2.3 Potassium dichromate (GB642) solution: 5g/L; 4.2.2.4 Hexamethylenetetramine (GB1400) solution: 200g/L, adjust the pH to 5~6 with nitric acid (1+9) solution (check with precision pH test paper).
4.2.2.5 Disodium ethylenediaminetetraacetic acid (GB1401) standard titration solution: c (EDTA) about 0.02mol/L, xylenol orange indicator solution: 5g/L.
4.2.3 Instruments and equipment
General laboratory instruments and
4.2.3.1 Microburette: graduation value 0.02mL. 4.2.4 Analysis steps
Carefully transfer the filter paper and residue retained in Section 4.1.3 into a 250mL beaker, and slightly flatten the filter paper with a glass rod. Add 10mL nitric acid solution and a small amount of water, slowly heat to dissolve the metallic lead, filter with medium-speed filter paper, and wash with hot water until there is no lead ion (check with potassium dichromate solution). Collect the filtrate and washings in a 500mL beaker (total volume not exceeding 300mL) and cool. Add ammonia solution to adjust the pH to 5-6 (check with precision pH test paper), add 10mL hexamethylenetetramine solution, 4 drops of xylenol orange indicator solution, and titrate with disodium ethylenediaminetetraacetic acid standard titration solution until the solution turns bright yellow. 4.2.5 Expression of analysis results
The content of metal lead (Pb) (X2) expressed as mass percentage is calculated according to formula (2): Xz-·VX0. 207 2×100=
Wherein: c is the actual concentration of the standard titration solution of disodium ethylenediaminetetraacetic acid, mol/L; V is the volume of the standard titration solution of disodium ethylenediaminetetraacetic acid consumed in the titration, mL; (2)
m is the mass of the test material in Article 4.1.3, g; 0.2072 is the mass of metal lead in grams equivalent to 1.00mL of the standard titration solution of disodium ethylenediaminetetraacetic acid (c (EDTA) = 1.000 mol/L).
4.2.6 Allowable difference
The arithmetic mean of the parallel determination results is taken as the determination result; the absolute difference of the parallel determination results shall not exceed 0.002%. 4.3 Determination of iron content
4.3.1 Method summary
Same as Article 2 of GB3049.
4.3.2 Reagents and materials
4.3.2.1 Nitric acid (GB626) solution: 1+3; 4.3.2.2 Ammonia water (GB631);
4.3.2.3 Ammonia water (GB631) solution: 1+34.3.2.4 Ascorbic acid solution: 20g/L, valid for 10d; 4.3.2.51, 10-phenanthroline (GB1293) solution: 2g/L, the solution should be kept away from light, only colorless solution can be used; 4.3.2.6 Acetic acid (GB676)-sodium acetate (GB693) buffer solution: pH ~ 4.5; 4.3.2.7 Iron standard solution: 1mL solution contains 0.01mg iron (Fe), prepared before use. Use a pipette to transfer 10mL of the iron standard solution prepared according to GB602, place it in a 100mL volumetric flask, dilute with water to the scale, and shake well.
W4.3.3 Instruments and equipment
General laboratory instruments and
4.3.3.1 Spectrophotometer: with a 3cm absorption cell. 4.3.4 Analysis steps
4.3.4.1 Drawing of working curve
HG2325-92
In a series of 100mL volumetric flasks, use a pipette to add 0, 1, 2, 4, 6, 8, and 10mL of iron standard solution, add water to about 60mL each, adjust the pH to 2 with nitric acid solution (check with precision pH test paper), add 2.5mL ascorbic acid solution, 10mL buffer solution, and 5mL 1,10-phenanthroline solution, dilute with water to the scale, and shake well. At a wavelength of 510nm, use a 3cm absorption cell, use water as a reference, adjust the absorbance of the spectrophotometer to zero, and measure its absorbance.
Subtract the absorbance of the blank solution from the absorbance of the standard solution, and draw a working curve with the mass of iron as the horizontal axis and the corresponding absorbance as the vertical axis.
4.3.4.2 Determination
Weigh about 1g of sample, accurate to 0.01g, place in a 150mL beaker, add 6mL of nitric acid solution, heat to dissolve, add water to about 40mL, and adjust the pH to about 2 with ammonia solution (4.3.2.3) (check with precision pH test paper). Add 6mL of nitric acid solution to another beaker, add water to about 30mL, and adjust the pH to about 2 with ammonia solution (4.3.2.2) (check with precision pH test paper) as a reagent blank solution. Transfer all the solution into a 100mL volumetric flask, add 2.5mL of ascorbic acid solution, 10mL of buffer solution, and 5mL of 1,10 phenanthroline solution, dilute with water to the scale, and shake well. Place at above 25℃ for 15min. At a wavelength of 510nm, use a 3cm absorption cell and water as a reference to adjust the absorbance of the spectrophotometer to zero. Measure the absorbance.
4.3.6 Expression of analysis results
The iron content (in terms of Fe2Os) expressed as mass percentage (X:) is calculated according to formula (3): (m1-mo)X1.43×100
_0.143(ml-mo）
mX1000
Wherein: m1——the mass of iron found from the working curve based on the measured absorbance of the test solution, mg; mo——the mass of iron found from the working curve based on the measured absorbance of the reagent blank solution, mg; m——the mass of the sample, g;
1.43——the coefficient for converting iron into ferric oxide. 4.3.7 Allowable difference
The arithmetic mean of the parallel determination results is taken as the determination result; the absolute difference of the parallel determination results shall not exceed 0.0005%. 4.4 Determination of particle size
4.4.1 Instruments and equipment
General laboratory instruments and
(3)
4.4.1.1 Test sieve (GB6003): R403 series, Φ200×50/3.35mm and @200×50/106μm, with sieve bottom and sieve cover;
4.4.2 Analysis steps
Stack the test sieves in the order of sieve bottom, 106μm, and 3.35mm sieve. Weigh 50g of the sample to an accuracy of 0.1g, pour it into the upper sieve, cover the sieve cover, and sieve it by hand for about 5 minutes. Weigh the mass of the residue on each sieve to an accuracy of 0.1g. 4.4.3 Expression of analysis results
Express the sieve residue (X) in mass percentage according to formula (4): 4
W.bzsoso.coIWhere: m1—mass of the sieve residue, g; m——mass of the test sample, g.
4.4.4 Permissible difference
HG2325—92
Take the arithmetic mean of the parallel determination results as the determination result; the absolute difference of the parallel determination results shall not exceed 0.5%. 5 Inspection rules
(4)
5.1 Granular lead monoxide for electronic industry shall be inspected by the quality supervision and inspection department of the manufacturer in accordance with the provisions of this standard. The manufacturer shall ensure that all products leaving the factory meet the requirements of this standard. Each batch of products leaving the factory shall be accompanied by a quality certificate, which shall include: manufacturer name, product name, net weight, batch number or production date, proof that the product quality meets this standard and the number of this standard. 5.2 The user has the right to inspect and accept the received products in accordance with the provisions of this standard. 5.3 Each batch of products shall not exceed 10t.
5.4 Determine the number of sampling units in accordance with Article 6.6 of GB6678. When sampling, the sampler should be inserted vertically from the center of the packaging unit to 3/4 of the depth of the material layer. After the sample is fully mixed, it is divided into 500g by quartering and sealed in two dry, clean bottles with ground stoppers. Labels are attached to the bottles, indicating the name of the manufacturer, product name, batch number, sampling date and name of the sampler. One bottle is for inspection and the other is kept for three months for reference. 5.5 If one of the indicators in the inspection results does not meet the requirements of this standard, re-sampling should be carried out from twice the amount of packaging units for verification. Even if one of the indicators in the verification results does not meet the requirements of this standard, the entire batch of products cannot be accepted. 5.6 When the supply and demand parties have objections to the product quality, they shall be handled in accordance with the provisions of the "Interim Measures for National Product Quality Arbitration Inspection". 5.7 The rounded value comparison method specified in GB1250 shall be used to determine whether the test results meet the standard. 6 Marking, packaging, transportation, storage
6.1 The packaging container of granular lead monoxide for the electronic industry shall have firm and clear markings, including: manufacturer name, product name, trademark, net weight, batch number or production date and this standard number; and the mark 7 "wet-afraid" mark specified in GB191. 6.2 Granular lead monoxide for the electronic industry adopts three packaging methods. 6.2.1 Plastic bag packaging. The inner packaging adopts polyethylene plastic film bag with specification size: 650mm×350mm and thickness of 0.1mm; the outer packaging adopts plastic woven bag with specification size: 550mm×300mm, and its performance and inspection method shall comply with the provisions of GB8946B. The net weight of each bag of granular lead monoxide for the electronic industry is 25kg. 6.2.2 Bulk bag packaging. The specification size, performance and inspection method of the bulk bag shall comply with the provisions of GB10454. The net weight of each bag of granular lead monoxide for the electronics industry is 1000kg.
6.2.3 Special box packaging. The special box is made of steel plate, with specifications and dimensions: 1000mm×700mm×1150mm, thickness of 1.25mm, and its performance and inspection methods shall comply with relevant regulations. The net weight of each box of granular lead monoxide for the electronics industry is 1.8t. 6.3 Granular lead monoxide for the electronics industry adopts three sealing methods. 6.3.1 When packaged in plastic bags, the inner bag is tied manually with vinyl rope or other ropes of equivalent quality, or sealed with other equivalent methods: the outer bag is folded at a distance of not less than 30mm from the bag edge, and the outer bag is sewn with vinyl thread or other thread of equivalent quality at a distance of not less than 15mm from the bag edge. The stitch length is 7-12mm, the stitches are neat, the stitch length is uniform, and there is no leakage or skipping. 6.3.2 When using bulk bags for packaging, use nylon rope or other ropes of equivalent quality to tie the mouth manually, or use other equivalent methods to seal.
6.3.3 When using special boxes for packaging, use screw caps to tighten the seal. 6.4 During transportation, there should be a cover to prevent rain and moisture. 5
W.bzsoso.coIHG2325—92
5 It should be stored in a cool and dry place to prevent rain, moisture, sunlight and heat. 6.5
Additional instructions:
This standard was proposed by the Science and Technology Department of the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of the Tianjin Chemical Research Institute of the Ministry of Chemical Industry. This standard was drafted by Nanjing Jinling Chemical Plant No. 1 and the Tianjin Chemical Research Institute of the Ministry of Chemical Industry. The main drafters of this standard are Wei Liangjing, Chen Meiying and Li Jingge. This standard refers to the product specifications of Asahi Glass Co., Ltd.3 Instruments and equipment
General laboratory instruments and
4.3.3.1 Spectrophotometer: with 3cm absorption cell. 4.3.4 Analysis steps
4.3.4.1 Drawing of working curve
HG2325-92
In a series of 100mL volumetric flasks, use a pipette to add 0, 1, 2, 4, 6, 8, and 10mL of iron standard solution, add water to about 60mL each, adjust the pH to 2 with nitric acid solution (check with precision pH test paper), add 2.5mL ascorbic acid solution, 10mL buffer solution, and 5mL 1,10-phenanthroline solution, dilute with water to the scale, and shake well. At a wavelength of 510nm, use a 3cm absorption cell, use water as a reference, adjust the absorbance of the spectrophotometer to zero, and measure its absorbance.
Subtract the absorbance of the blank solution from the absorbance of the standard solution, and draw a working curve with the mass of iron as the horizontal axis and the corresponding absorbance as the vertical axis.
4.3.4.2 Determination
Weigh about 1g of the sample, accurate to 0.01g, and place it in a 150mL beaker. Add 6mL of nitric acid solution, heat it to dissolve it, add water to about 40mL, and use ammonia solution (4.3.2.3) to adjust the pH to about 2 (check with precision pH test paper). Add 6mL of nitric acid solution to another beaker, add water to about 30mL, and use ammonia solution (4.3.2.2) to adjust the pH to about 2 (check with precision pH test paper) as the reagent blank solution. Transfer all the solution into a 100mL volumetric flask, add 2.5mL of ascorbic acid solution, 10mL of buffer solution, and 5mL of 1,10 phenanthroline solution, dilute to the scale with water, and shake well. Place it above 25℃ for 15min. At a wavelength of 510nm, use a 3cm absorption cell and water as a reference to adjust the spectrophotometer's absorbance to zero. Measure the absorbance.
4.3.6 Representation of analysis results
The iron content (in terms of Fe2Os) expressed as mass percentage (X:) is calculated according to formula (3): (m1-mo)X1.43×100
_0.143(ml-mo）
mX1000
Where: m1——the mass of iron found from the working curve based on the measured absorbance of the test solution, mg; mo——the mass of iron found from the working curve based on the measured absorbance of the reagent blank solution, mg; m——the mass of the sample, g;
1.43——the coefficient for converting iron into ferric oxide. 4.3.7 Allowable difference
The arithmetic mean of the parallel determination results is taken as the determination result; the absolute difference of the parallel determination results shall not exceed 0.0005%. 4.4 Determination of particle size
4.4.1 Instruments and equipment
General laboratory instruments and
(3)
4.4.1.1 Test sieve (GB6003): R403 series, Φ200×50/3.35mm and @200×50/106μm, with sieve bottom and sieve cover;
4.4.2 Analysis steps
Stack the test sieves in the order of sieve bottom, 106μm, and 3.35mm sieve. Weigh 50g of the sample to an accuracy of 0.1g, pour it into the upper sieve, cover the sieve cover, and sieve it by hand for about 5 minutes. Weigh the mass of the residue on each sieve to an accuracy of 0.1g. 4.4.3 Expression of analysis results
Express the sieve residue (X) in mass percentage according to formula (4): 4
W.bzsoso.coIWhere: m1—mass of the sieve residue, g; m——mass of the test sample, g.
4.4.4 Allowable difference
HG2325—92
Take the arithmetic mean of the parallel determination results as the determination result; the absolute difference of the parallel determination results shall not exceed 0.5%. 5 Inspection rules
(4)
5.1 Granular lead monoxide for electronic industry shall be inspected by the quality supervision and inspection department of the manufacturer in accordance with the provisions of this standard. The manufacturer shall ensure that all products leaving the factory meet the requirements of this standard. Each batch of products leaving the factory shall be accompanied by a quality certificate, which shall include: manufacturer name, product name, net weight, batch number or production date, proof that the product quality meets this standard and the number of this standard. 5.2 The user has the right to inspect and accept the received products in accordance with the provisions of this standard. 5.3 Each batch of products shall not exceed 10t.
5.4 Determine the number of sampling units in accordance with Article 6.6 of GB6678. When sampling, the sampler should be inserted vertically from the center of the packaging unit to 3/4 of the depth of the material layer. After the sample is fully mixed, it is divided into 500g by quartering and sealed in two dry, clean bottles with ground stoppers. Labels are attached to the bottles, indicating the name of the manufacturer, product name, batch number, sampling date and name of the sampler. One bottle is for inspection and the other is kept for three months for reference. 5.5 If one indicator of the inspection result does not meet the requirements of this standard, re-sampling should be carried out from twice the amount of packaging units for verification. Even if one indicator of the verification result does not meet the requirements of this standard, the entire batch of products cannot be accepted. 5.6 When the supply and demand parties have objections to the product quality, they shall be handled in accordance with the provisions of the "Interim Measures for National Product Quality Arbitration Inspection". 5.7 The rounded value comparison method specified in GB1250 shall be used to determine whether the test results meet the standard. 6 Marking, packaging, transportation, storage
6.1 The packaging container of granular lead monoxide for electronic industry shall have firm and clear markings, including: manufacturer name, product name, trademark, net weight, batch number or production date and this standard number; and the mark 7 "wet-afraid" mark specified in GB191. 6.2 Granular lead monoxide for electronic industry adopts three packaging methods. 6.2.1 Plastic bag packaging. The inner packaging adopts polyethylene plastic film bag with specification size: 650mm×350mm and thickness of 0.1mm; the outer packaging adopts plastic woven bag with specification size: 550mm×300mm, and its performance and inspection method shall comply with the provisions of GB8946B. The net weight of each bag of granular lead monoxide for electronic industry is 25kg. 6.2.2 Bulk bag packaging. The specification size, performance and inspection method of bulk bag shall comply with the provisions of GB10454. The net weight of each bag of granular lead monoxide for the electronics industry is 1000kg.
6.2.3 Special box packaging. The special box is made of steel plate, with specifications and dimensions: 1000mm×700mm×1150mm, thickness of 1.25mm, and its performance and inspection methods shall comply with relevant regulations. The net weight of each box of granular lead monoxide for the electronics industry is 1.8t. 6.3 Granular lead monoxide for the electronics industry adopts three sealing methods. 6.3.1 When packaged in plastic bags, the inner bag is tied manually with vinyl rope or other ropes of equivalent quality, or sealed with other equivalent methods: the outer bag is folded at a distance of not less than 30mm from the bag edge, and the outer bag is sewn with vinyl thread or other thread of equivalent quality at a distance of not less than 15mm from the bag edge. The stitch length is 7-12mm, the stitches are neat, the stitch length is uniform, and there is no leakage or skipping. 6.3.2 When using bulk bags for packaging, use nylon rope or other ropes of equivalent quality to tie the mouth manually, or use other equivalent methods to seal.
6.3.3 When using special boxes for packaging, use screw caps to tighten the seal. 6.4 During transportation, there should be a cover to prevent rain and moisture. 5
W.bzsoso.coIHG2325—92
5 It should be stored in a cool and dry place to prevent rain, moisture, sunlight and heat. 6.5
Additional instructions:
This standard was proposed by the Science and Technology Department of the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of the Tianjin Chemical Research Institute of the Ministry of Chemical Industry. This standard was drafted by Nanjing Jinling Chemical Plant No. 1 and the Tianjin Chemical Research Institute of the Ministry of Chemical Industry. The main drafters of this standard are Wei Liangjing, Chen Meiying and Li Jingge. This standard refers to the product specifications of Asahi Glass Co., Ltd.3 Instruments and equipment
General laboratory instruments and
4.3.3.1 Spectrophotometer: with 3cm absorption cell. 4.3.4 Analysis steps
4.3.4.1 Drawing of working curve
HG2325-92
In a series of 100mL volumetric flasks, use a pipette to add 0, 1, 2, 4, 6, 8, 10mL of iron standard solution, add water to about 60mL each, adjust the pH to 2 with nitric acid solution (check with precision pH test paper), add 2.5mL ascorbic acid solution, 10mL buffer solution, 5mL 1,10-phenanthroline solution, dilute with water to the scale, and shake well. At a wavelength of 510nm, use a 3cm absorption cell, use water as a reference, adjust the absorbance of the spectrophotometer to zero, and measure its absorbance.
Subtract the absorbance of the blank solution from the absorbance of the standard solution, and draw a working curve with the mass of iron as the horizontal axis and the corresponding absorbance as the vertical axis.
4.3.4.2 Determination
Weigh about 1g of the sample, accurate to 0.01g, and place it in a 150mL beaker. Add 6mL of nitric acid solution, heat it to dissolve it, add water to about 40mL, and use ammonia solution (4.3.2.3) to adjust the pH to about 2 (check with precision pH test paper). Add 6mL of nitric acid solution to another beaker, add water to about 30mL, and use ammonia solution (4.3.2.2) to adjust the pH to about 2 (check with precision pH test paper) as the reagent blank solution. Transfer all the solution into a 100mL volumetric flask, add 2.5mL of ascorbic acid solution, 10mL of buffer solution, and 5mL of 1,10 phenanthroline solution, dilute to the scale with water, and shake well. Place it above 25℃ for 15min. At a wavelength of 510nm, use a 3cm absorption cell and water as a reference to adjust the spectrophotometer's absorbance to zero. Measure the absorbance.
4.3.6 Representation of analysis results
The iron content (in terms of Fe2Os) expressed as mass percentage (X:) is calculated according to formula (3): (m1-mo)X1.43×100
_0.143(ml-mo）
mX1000
Where: m1——the mass of iron found from the working curve based on the measured absorbance of the test solution, mg; mo——the mass of iron found from the working curve based on the measured absorbance of the reagent blank solution, mg; m——the mass of the sample, g;
1.43——the coefficient for converting iron into ferric oxide. 4.3.7 Allowable difference
The arithmetic mean of the parallel determination results is taken as the determination result; the absolute difference of the parallel determination results shall not exceed 0.0005%. 4.4 Determination of particle size
4.4.1 Instruments and equipment
General laboratory instruments and
(3)
4.4.1.1 Test sieve (GB6003): R403 series, Φ200×50/3.35mm and @200×50/106μm, with sieve bottom and sieve cover;
4.4.2 Analysis steps
Stack the test sieves in the order of sieve bottom, 106μm, and 3.35mm sieve. Weigh 50g of the sample to an accuracy of 0.1g, pour it into the upper sieve, cover the sieve cover, and sieve it by hand for about 5 minutes. Weigh the mass of the residue on each sieve to an accuracy of 0.1g. 4.4.3 Expression of analysis results
Express the sieve residue (X) in mass percentage according to formula (4): 4
W.bzsoso.coIWhere: m1—mass of the sieve residue, g; m——mass of the test sample, g.
4.4.4 Allowable difference
HG2325—92
Take the arithmetic mean of the parallel determination results as the determination result; the absolute difference of the parallel determination results shall not exceed 0.5%. 5 Inspection rules
(4)
5.1 Granular lead monoxide for electronic industry shall be inspected by the quality supervision and inspection department of the manufacturer in accordance with the provisions of this standard. The manufacturer shall ensure that all products leaving the factory meet the requirements of this standard. Each batch of products leaving the factory shall be accompanied by a quality certificate, which shall include: manufacturer name, product name, net weight, batch number or production date, proof that the product quality meets this standard and the number of this standard. 5.2 The user has the right to inspect and accept the received products in accordance with the provisions of this standard. 5.3 Each batch of products shall not exceed 10t.
5.4 Determine the number of sampling units in accordance with Article 6.6 of GB6678. When sampling, the sampler should be inserted vertically from the center of the packaging unit to 3/4 of the depth of the material layer. After the sample is fully mixed, it is divided into 500g by quartering and sealed in two dry, clean bottles with ground stoppers. Labels are attached to the bottles, indicating the name of the manufacturer, product name, batch number, sampling date and name of the sampler. One bottle is for inspection and the other is kept for three months for reference. 5.5 If one indicator of the inspection result does not meet the requirements of this standard, re-sampling should be carried out from twice the amount of packaging units for verification. Even if one indicator of the verification result does not meet the requirements of this standard, the entire batch of products cannot be accepted. 5.6 When the supply and demand parties have objections to the product quality, they shall be handled in accordance with the provisions of the "Interim Measures for National Product Quality Arbitration Inspection". 5.7 The rounded value comparison method specified in GB1250 shall be used to determine whether the test results meet the standard. 6 Marking, packaging, transportation, storage
6.1 The packaging container of granular lead monoxide for electronic industry shall have firm and clear markings, including: manufacturer name, product name, trademark, net weight, batch number or production date and this standard number; and the mark 7 "wet-afraid" mark specified in GB191. 6.2 Granular lead monoxide for electronic industry adopts three packaging methods. 6.2.1 Plastic bag packaging. The inner packaging adopts polyethylene plastic film bag with specification size: 650mm×350mm and thickness of 0.1mm; the outer packaging adopts plastic woven bag with specification size: 550mm×300mm, and its performance and inspection method shall comply with the provisions of GB8946B. The net weight of each bag of granular lead monoxide for electronic industry is 25kg. 6.2.2 Bulk bag packaging. The specification size, performance and inspection method of bulk bag shall comply with the provisions of GB10454. The net weight of each bag of granular lead monoxide for the electronics industry is 1000kg.
6.2.3 Special box packaging. The special box is made of steel plate, with specifications and dimensions: 1000mm×700mm×1150mm, thickness of 1.25mm, and its performance and inspection methods shall comply with relevant regulations. The net weight of each box of granular lead monoxide for the electronics industry is 1.8t. 6.3 Granular lead monoxide for the electronics industry adopts three sealing methods. 6.3.1 When packaged in plastic bags, the inner bag is tied with vinyl rope or other ropes of equivalent quality, or sealed with other equivalent methods: the outer bag is folded at a distance of not less than 30mm from the bag edge, and the outer bag is sewn with vinyl thread or other thread of equivalent quality at a distance of not less than 15mm from the bag edge. The stitch length is 7-12mm, the stitches are neat, the stitch length is uniform, and there is no leakage or skipping. 6.3.2 When using bulk bags for packaging, use nylon rope or other ropes of equivalent quality to tie the mouth manually, or use other equivalent methods to seal.
6.3.3 When using special boxes for packaging, use screw caps to tighten the seal. 6.4 During transportation, there should be a cover to prevent rain and moisture. 5
W.bzsoso.coIHG2325—92
5 It should be stored in a cool and dry place to prevent rain, moisture, sunlight and heat. 6.5
Additional remarks:
This standard was proposed by the Science and Technology Department of the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of the Tianjin Chemical Research Institute of the Ministry of Chemical Industry. This standard was drafted by Nanjing Jinling Chemical Plant No. 1 and the Tianjin Chemical Research Institute of the Ministry of Chemical Industry. The main drafters of this standard are Wei Liangjing, Chen Meiying and Li Jingge. This standard refers to the product specifications of Asahi Glass Co., Ltd.01g, put it in a 150mL beaker, add 6mL nitric acid solution, heat it to dissolve, add water to about 40mL, and adjust the pH to about 2 with ammonia solution (4.3.2.3) (check with precision pH test paper). Add 6mL nitric acid solution to another beaker, add water to about 30mL, and adjust the pH to about 2 with ammonia solution (4.3.2.2) (check with precision pH test paper) as a reagent blank solution. Transfer all the solution into a 100mL volumetric flask, add 2.5mL ascorbic acid solution, 10mL buffer solution, 5mL 1,10 phenanthroline solution, dilute with water to the scale, and shake well. Place it above 25℃ for 15min. At a wavelength of 510nm, use a 3cm absorption cell and water as a reference to adjust the absorbance of the spectrophotometer to zero. Measure the absorbance.
4.3.6 Expression of analysis results
The iron content (in terms of Fe2Os) expressed as mass percentage (X:) is calculated according to formula (3): (m1-mo)X1.43×100
_0.143(ml-mo）
mX1000
Wherein: m1——the mass of iron found from the working curve based on the measured absorbance of the test solution, mg; mo——the mass of iron found from the working curve based on the measured absorbance of the reagent blank solution, mg; m——the mass of the sample, g;
1.43——the coefficient for converting iron into ferric oxide. 4.3.7 Allowable difference
The arithmetic mean of the parallel determination results is taken as the determination result; the absolute difference of the parallel determination results shall not exceed 0.0005%. 4.4 Determination of particle size
4.4.1 Instruments and equipment
General laboratory instruments and
(3)
4.4.1.1 Test sieve (GB6003): R403 series, Φ200×50/3.35mm and @200×50/106μm, with sieve bottom and sieve cover;
4.4.2 Analysis steps
Stack the test sieves in the order of sieve bottom, 106μm, and 3.35mm sieve. Weigh 50g of the sample to an accuracy of 0.1g, pour it into the upper sieve, cover the sieve cover, and sieve it by hand for about 5 minutes. Weigh the mass of the residue on each sieve to an accuracy of 0.1g. 4.4.3 Expression of analysis results
Express the sieve residue (X) in mass percentage according to formula (4): 4
W.bzsoso.coIWhere: m1—mass of the sieve residue, g; m——mass of the test sample, g.
4.4.4 Allowable difference
HG2325—92
Take the arithmetic mean of the parallel determination results as the determination result; the absolute difference of the parallel determination results shall not exceed 0.5%. 5 Inspection rules
(4)
5.1 Granular lead monoxide for electronic industry shall be inspected by the quality supervision and inspection department of the manufacturer in accordance with the provisions of this standard. The manufacturer shall ensure that all products leaving the factory meet the requirements of this standard. Each batch of products leaving the factory shall be accompanied by a quality certificate, which shall include: manufacturer name, product name, net weight, batch number or production date, proof that the product quality meets this standard and the number of this standard. 5.2 The user has the right to inspect and accept the received products in accordance with the provisions of this standard. 5.3 Each batch of products shall not exceed 10t.
5.4 Determine the number of sampling units in accordance with Article 6.6 of GB6678. When sampling, the sampler should be inserted vertically from the center of the packaging unit to 3/4 of the depth of the material layer. After the sample is fully mixed, it is divided into 500g by quartering and sealed in two dry, clean bottles with ground stoppers. Labels are attached to the bottles, indicating the name of the manufacturer, product name, batch number, sampling date and name of the sampler. One bottle is for inspection and the other is kept for three months for reference. 5.5 If one indicator of the inspection result does not meet the requirements of this standard, re-sampling should be carried out from twice the amount of packaging units for verification. Even if one indicator of the verification result does not meet the requirements of this standard, the entire batch of products cannot be accepted. 5.6 When the supply and demand parties have objections to the product quality, they shall be handled in accordance with the provisions of the "Interim Measures for National Product Quality Arbitration Inspection". 5.7 The rounded value comparison method specified in GB1250 shall be used to determine whether the test results meet the standard. 6 Marking, packaging, transportation, storage
6.1 The packaging container of granular lead monoxide for electronic industry shall have firm and clear markings, including: manufacturer name, product name, trademark, net weight, batch number or production date and this standard number; and the mark 7 "wet-afraid" mark specified in GB191. 6.2 Granular lead monoxide for electronic industry adopts three packaging methods. 6.2.1 Plastic bag packaging. The inner packaging adopts polyethylene plastic film bag with specification size: 650mm×350mm and thickness of 0.1mm; the outer packaging adopts plastic woven bag with specification size: 550mm×300mm, and its performance and inspection method shall comply with the provisions of GB8946B. The net weight of each bag of granular lead monoxide for electronic industry is 25kg. 6.2.2 Bulk bag packaging. The specification size, performance and inspection method of bulk bag shall comply with the provisions of GB10454. The net weight of each bag of granular lead monoxide for the electronics industry is 1000kg.
6.2.3 Special box packaging. The special box is made of steel plate, with specifications and dimensions: 1000mm×700mm×1150mm, thickness of 1.25mm, and its performance and inspection methods shall comply with relevant regulations. The net weight of each box of granular lead monoxide for the electronics industry is 1.8t. 6.3 Granular lead monoxide for the electronics industry adopts three sealing methods. 6.3.1 When packaged in plastic bags, the inner bag is tied with vinyl rope or other ropes of equivalent quality, or sealed with other equivalent methods: the outer bag is folded at a distance of not less than 30mm from the bag edge, and the outer bag is sewn with vinyl thread or other thread of equivalent quality at a distance of not less than 15mm from the bag edge. The stitch length is 7-12mm, the stitches are neat, the stitch length is uniform, and there is no leakage or skipping. 6.3.2 When using bulk bags for packaging, use nylon rope or other ropes of equivalent quality to tie the mouth manually, or use other equivalent methods to seal.
6.3.3 When using special boxes for packaging, use screw caps to tighten the seal. 6.4 During transportation, there should be a cover to prevent rain and moisture. 5
W.bzsoso.coIHG2325—92
5 It should be stored in a cool and dry place to prevent rain, moisture, sunlight and heat. 6.5
Additional remarks:
This standard was proposed by the Science and Technology Department of the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of the Tianjin Chemical Research Institute of the Ministry of Chemical Industry. This standard was drafted by Nanjing Jinling Chemical Plant No. 1 and the Tianjin Chemical Research Institute of the Ministry of Chemical Industry. The main drafters of this standard are Wei Liangjing, Chen Meiying and Li Jingge. This standard refers to the product specifications of Asahi Glass Co., Ltd.01g, put it in a 150mL beaker, add 6mL nitric acid solution, heat it to dissolve, add water to about 40mL, and adjust the pH to about 2 with ammonia solution (4.3.2.3) (check with precision pH test paper). Add 6mL nitric acid solution to another beaker, add water to about 30mL, and adjust the pH to about 2 with ammonia solution (4.3.2.2) (check with precision pH test paper) as a reagent blank solution. Transfer all the solution into a 100mL volumetric flask, add 2.5mL ascorbic acid solution, 10mL buffer solution, 5mL 1,10 phenanthroline solution, dilute with water to the scale, and shake well. Place it above 25℃ for 15min. At a wavelength of 510nm, use a 3cm absorption cell and water as a reference to adjust the absorbance of the spectrophotometer to zero. Measure the absorbance.
4.3.6 Expression of analysis results
The iron content (in terms of Fe2Os) expressed as mass percentage (X:) is calculated according to formula (3): (m1-mo)X1.43×100
_0.143(ml-mo）
mX1000
Wherein: m1——the mass of iron found from the working curve based on the measured absorbance of the test solution, mg; mo——the mass of iron found from the working curve based on the measured absorbance of the reagent blank solution, mg; m——the mass of the sample, g;
1.43——the coefficient for converting iron into ferric oxide. 4.3.7 Allowable difference
The arithmetic mean of the parallel determination results is taken as the determination result; the absolute difference of the parallel determination results shall not exceed 0.0005%. 4.4 Determination of particle size
4.4.1 Instruments and equipment
General laboratory instruments and
(3)
4.4.1.1 Test sieve (GB6003): R403 series, Φ200×50/3.35mm and @200×50/106μm, with sieve bottom and sieve cover;
4.4.2 Analysis steps
Stack the test sieves in the order of sieve bottom, 106μm, and 3.35mm sieve. Weigh 50g of the sample to an accuracy of 0.1g, pour it into the upper sieve, cover the sieve cover, and sieve it by hand for about 5 minutes. Weigh the mass of the residue on each sieve to an accuracy of 0.1g. 4.4.3 Expression of analysis results
Express the sieve residue (X) in mass percentage according to formula (4): 4
W.bzsoso.coIWhere: m1—mass of the sieve residue, g; m——mass of the test sample, g.
4.4.4 Allowable difference
HG2325—92
Take the arithmetic mean of the parallel determination results as the determination result; the absolute difference of the parallel determination results shall not exceed 0.5%. 5 Inspection rules
(4)
5.1 Granular lead monoxide for electronic industry shall be inspected by the quality supervision and inspection department of the manufacturer in accordance with the provisions of this standard. The manufacturer shall ensure that all products leaving the factory meet the requirements of this standard. Each batch of products leaving the factory shall be accompanied by a quality certificate, which shall include: manufacturer name, product name, net weight, batch number or production date, proof that the product quality meets this standard and the number of this standard. 5.2 The user has the right to inspect and accept the received products in accordance with the provisions of this standard. 5.3 Each batch of products shall not exceed 10t.
5.4 Determine the number of sampling units in accordance with Article 6.6 of GB6678. When sampling, the sampler should be inserted vertically from the center of the packaging unit to 3/4 of the depth of the material layer. After the sample is fully mixed, it is divided into 500g by quartering and sealed in two dry, clean bottles with ground stoppers. Labels are attached to the bottles, indicating the name of the manufacturer, product name, batch number, sampling date and name of the sampler. One bottle is for inspection and the other is kept for three months for reference. 5.5 If one indicator of the inspection result does not meet the requirements of this standard, re-sampling should be carried out from twice the amount of packaging units for verification. Even if one indicator of the verification result does not meet the requirements of this standard, the entire batch of products cannot be accepted. 5.6 When the supply and demand parties have objections to the product quality, they shall be handled in accordance with the provisions of the "Interim Measures for National Product Quality Arbitration Inspection". 5.7 The rounded value comparison method specified in GB1250 shall be used to determine whether the test results meet the standard. 6 Marking, packaging, transportation, storage
6.1 The packaging container of granular lead monoxide for electronic industry shall have firm and clear markings, including: manufacturer name, product name, trademark, net weight, batch number or production date and this standard number; and the mark 7 "wet-afraid" mark specified in GB191. 6.2 Granular lead monoxide for electronic industry adopts three packaging methods. 6.2.1 Plastic bag packaging. The inner packaging adopts polyethylene plastic film bag with specification size: 650mm×350mm and thickness of 0.1mm; the outer packaging adopts plastic woven bag with specification size: 550mm×300mm, and its performance and inspection method shall comply with the provisions of GB8946B. The net weight of each bag of granular lead monoxide for electronic industry is 25kg. 6.2.2 Bulk bag packaging. The specification size, performance and inspection method of bulk bag shall comply with the provisions of GB10454. The net weight of each bag of granular lead monoxide for the electronics industry is 1000kg.
6.2.3 Special box packaging. The special box is made of steel plate, with specifications and dimensions: 1000mm×700mm×1150mm, thickness of 1.25mm, and its performance and inspection methods shall comply with relevant regulations. The net weight of each box of granular lead monoxide for the electronics industry is 1.8t. 6.3 Granular lead monoxide for the electronics industry adopts three sealing methods. 6.3.1 When packaged in plastic bags, the inner bag is tied manually with vinyl rope or other ropes of equivalent quality, or sealed with other equivalent methods: the outer bag is folded at a distance of not less than 30mm from the bag edge, and the outer bag is sewn with vinyl thread or other thread of equivalent quality at a distance of not less than 15mm from the bag edge. The stitch length is 7-12mm, the stitches are neat, the stitch length is uniform, and there is no leakage or skipping. 6.3.2 When using bulk bags for packaging, use nylon rope or other ropes of equivalent quality to tie the mouth manually, or use other equivalent methods to seal.
6.3.3 When using special boxes for packaging, use screw caps to tighten the seal. 6.4 During transportation, there should be a cover to prevent rain and moisture. 5
W.bzsoso.coIHG2325—92
5 It should be stored in a cool and dry place to prevent rain, moisture, sunlight and heat. 6.5
Additional instructions:
This standard was proposed by the Science and Technology Department of the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of the Tianjin Chemical Research Institute of the Ministry of Chemical Industry. This standard was drafted by Nanjing Jinling Chemical Plant No. 1 and the Tianjin Chemical Research Institute of the Ministry of Chemical Industry. The main drafters of this standard are Wei Liangjing, Chen Meiying and Li Jingge. This standard refers to the product specifications of Asahi Glass Co., Ltd.3 Expression of analysis results
Express the sieve residue (X) in mass percentage according to formula (4):4
W.bzsoso.coIWhere: m1—mass of the sieve residue, g; m——mass of the test material, g. wwW.bzxz.Net
4.4.4 Allowable difference
HG2325—92
Take the arithmetic mean of the parallel determination results as the determination result; the absolute difference of the parallel determination results shall not exceed 0.5%. 5 Inspection rules
(4)
5.1 Granular lead monoxide for electronic industry shall be inspected by the quality supervision and inspection department of the manufacturer in accordance with the provisions of this standard. The manufacturer shall ensure that all products leaving the factory meet the requirements of this standard. Each batch of products leaving the factory shall be accompanied by a quality certificate, which shall include: manufacturer name, product name, net weight, batch number or production date, proof that the product quality meets this standard and the number of this standard. 5.2 The user has the right to inspect and accept the received products in accordance with the provisions of this standard. 5.3 Each batch of products shall not exceed 10t.
5.4 Determine the number of sampling units in accordance with Article 6.6 of GB6678. When sampling, the sampler should be inserted vertically from the center of the packaging unit to 3/4 of the depth of the material layer. After the sample is fully mixed, it is divided into 500g by quartering and sealed in two dry, clean bottles with ground stoppers. Labels are attached to the bottles, indicating the name of the manufacturer, product name, batch number, sampling date and name of the sampler. One bottle is for inspection and the other is kept for three months for reference. 5.5 If one indicator of the inspection result does not meet the requirements of this standard, re-sampling should be carried out from twice the amount of packaging units for verification. Even if one indicator of the verification result does not meet the requirements of this standard, the entire batch of products cannot be accepted. 5.6 When the supply and demand parties have objections to the product quality, they shall be handled in accordance with the provisions of the "Interim Measures for National Product Quality Arbitration Inspection". 5.7 The rounded value comparison method specified in GB1250 shall be used to determine whether the test results meet the standard. 6 Marking, packaging, transportation, storage
6.1 The packaging container of granular lead monoxide for electronic industry shall have firm and clear markings, including: manufacturer name, product name, trademark, net weight, batch number or production date and this standard number; and the mark 7 "wet-afraid" mark specified in GB191. 6.2 Granular lead monoxide for electronic industry adopts three packaging methods. 6.2.1 Plastic bag packaging. The inner packaging adopts polyethylene plastic film bag with specification size: 650mm×350mm and thickness of 0.1mm; the outer packaging adopts plastic woven bag with specification size: 550mm×300mm, and its performance and inspection method shall comply with the provisions of GB8946B. The net weight of each bag of granular lead monoxide for electronic industry is 25kg. 6.2.2 Bulk bag packaging. The specification size, performance and inspection method of bulk bag shall comply with the provisions of GB10454. The net weight of each bag of granular lead monoxide for the electronics industry is 1000kg.
6.2.3 Special box packaging. The special box is made of steel plate, with specifications and dimensions: 1000mm×700mm×1150mm, thickness of 1.25mm, and its performance and inspection methods shall comply with relevant regulations. The net weight of each box of granular lead monoxide for the electronics industry is 1.8t. 6.3 Granular lead monoxide for the electronics industry adopts three sealing methods. 6.3.1 When packaged in plastic bags, the inner bag is tied with vinyl rope or other ropes of equivalent quality, or sealed with other equivalent methods: the outer bag is folded at a distance of not less than 30mm from the bag edge, and the outer bag is sewn with vinyl thread or other thread of equivalent quality at a distance of not less than 15mm from the bag edge. The stitch length is 7-12mm, the stitches are neat, the stitch length is uniform, and there is no leakage or skipping. 6.3.2 When using bulk bags for packaging, use nylon rope or other ropes of equivalent quality to tie the mouth manually, or use other equivalent methods to seal.
6.3.3 When using special boxes for packaging, use screw caps to tighten the seal. 6.4 During transportation, there should be a cover to prevent rain and moisture. 5
W.bzsoso.coIHG2325—92
5 It should be stored in a cool and dry place to prevent rain, moisture, sunlight and heat. 6.5
Additional remarks:
This standard was proposed by the Science and Technology Department of the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of the Tianjin Chemical Research Institute of the Ministry of Chemical Industry. This standard was drafted by Nanjing Jinling Chemical Plant No. 1 and the Tianjin Chemical Research Institute of the Ministry of Chemical Industry. The main drafters of this standard are Wei Liangjing, Chen Meiying and Li Jingge. This standard refers to the product specifications of Asahi Glass Co., Ltd.3 Expression of analysis results
Express the sieve residue (X) in mass percentage according to formula (4):4
W.bzsoso.coIWhere: m1—mass of the sieve residue, g; m——mass of the test material, g.
4.4.4 Allowable difference
HG2325—92
Take the arithmetic mean of the parallel determination results as the determination result; the absolute difference of the parallel determination results shall not exceed 0.5%. 5 Inspection rules
(4)
5.1 Granular lead monoxide for electronic industry shall be inspected by the quality supervision and inspection department of the manufacturer in accordance with the provisions of this standard. The manufacturer shall ensure that all products leaving the factory meet the requirements of this standard. Each batch of products leaving the factory shall be accompanied by a quality certificate, which shall include: manufacturer name, product name, net weight, batch number or production date, proof that the product quality meets this standard and the number of this standard. 5.2 The user has the right to inspect and accept the received products in accordance with the provisions of this standard. 5.3 Each batch of products shall not exceed 10t.
5.4 Determine the number of sampling units in accordance with Article 6.6 of GB6678. When sampling, the sampler should be inserted vertically from the center of the packaging unit to 3/4 of the depth of the material layer. After the sample is fully mixed, it is divided into 500g by quartering and sealed in two dry, clean bottles with ground stoppers. Labels are attached to the bottles, indicating the name of the manufacturer, product name, batch number, sampling date and name of the sampler. One bottle is for inspection and the other is kept for three months for reference. 5.5 If one of the indicators in the inspection results does not meet the requirements of this standard, re-sampling should be carried out from twice the amount of packaging units for verification. Even if one of the indicators in the verification results does not meet the requirements of this standard, the entire batch of products cannot be accepted. 5.6 When the supply and demand parties have objections to the product quality, they shall be handled in accordance with the provisions of the "Interim Measures for National Product Quality Arbitration Inspection". 5.7 The rounded value comparison method specified in GB1250 shall be used to determine whether the test results meet the standard. 6 Marking, packaging, transportation, storage
6.1 The packaging container of granular lead monoxide for the electronic industry shall have firm and clear markings, including: manufacturer name, product name, trademark, net weight, batch number or production date and this standard number; and the mark 7 "wet-afraid" mark specified in GB191. 6.2 Granular lead monoxide for the electronic industry adopts three packaging methods. 6.2.1 Plastic bag packaging. The inner packaging adopts polyethylene plastic film bag with specification size: 650mm×350mm and thickness of 0.1mm; the outer packaging adopts plastic woven bag with specification size: 550mm×300mm, and its performance and inspection method shall comply with the provisions of GB8946B. The net weight of each bag of granular lead monoxide for the electronic industry is 25kg. 6.2.2 Bulk bag packaging. The specification size, performance and inspection method of the bulk bag shall comply with the provisions of GB10454. The net weight of each bag of granular lead monoxide for the electronics industry is 1000kg.
6.2.3 Special box packaging. The special box is made of steel plate, with specifications and dimensions: 1000mm×700mm×1150mm, thickness of 1.25mm, and its performance and inspection methods shall comply with relevant regulations. The net weight of each box of granular lead monoxide for the electronics industry is 1.8t. 6.3 Granular lead monoxide for the electronics industry adopts three sealing methods. 6.3.1 When packaged in plastic bags, the inner bag is tied manually with vinyl rope or other ropes of equivalent quality, or sealed with other equivalent methods: the outer bag is folded at a distance of not less than 30mm from the bag edge, and the outer bag is sewn with vinyl thread or other thread of equivalent quality at a distance of not less than 15mm from the bag edge. The stitch length is 7-12mm, the stitches are neat, the stitch length is uniform, and there is no leakage or skipping. 6.3.2 When using bulk bags for packaging, use nylon rope or other ropes of equivalent quality to tie the mouth manually, or use other equivalent methods to seal.
6.3.3 When using special boxes for packaging, use screw caps to tighten the seal. 6.4 During transportation, there should be a cover to prevent rain and moisture. 5
W.bzsoso.coIHG2325—92
5 It should be stored in a cool and dry place to prevent rain, moisture, sunlight and heat. 6.5
Additional instructions:
This standard was proposed by the Science and Technology Department of the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of the Tianjin Chemical Research Institute of the Ministry of Chemical Industry. This standard was drafted by Nanjing Jinling Chemical Plant No. 1 and the Tianjin Chemical Research Institute of the Ministry of Chemical Industry. The main drafters of this standard are Wei Liangjing, Chen Meiying and Li Jingge. This standard refers to the product specifications of Asahi Glass Co., Ltd.5
Additional Notes:
This standard was proposed by the Department of Science and Technology of the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of Tianjin Chemical Research Institute of the Ministry of Chemical Industry. This standard was drafted by Nanjing Jinling Chemical Plant No. 1 and Tianjin Chemical Research Institute of the Ministry of Chemical Industry. The main drafters of this standard are Wei Liangjing, Chen Meiying and Li Jingge. This standard refers to the product specifications of Asahi Glass Co., Ltd.5
Additional Notes:
This standard was proposed by the Department of Science and Technology of the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of Tianjin Chemical Research Institute of the Ministry of Chemical Industry. This standard was drafted by Nanjing Jinling Chemical Plant No. 1 and Tianjin Chemical Research Institute of the Ministry of Chemical Industry. The main drafters of this standard are Wei Liangjing, Chen Meiying and Li Jingge. This standard refers to the product specifications of Asahi Glass Co., Ltd.
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