Some standard content:
Chemical Industry Standard of the People's Republic of China
HGT2276-1996
Driers for Coatings
Published on April 10, 1996
Ministry of Chemical Industry of the People's Republic of China
Implemented on January 1, 1997
W.bzsoso.cOmHG/T2276-1996
This standard is a revision of the previous version HG/T2276-92 "Driers for Coatings" (first edition), with some additions and partial changes in technical content, and comprehensive editorial revisions in accordance with GB/T1.1-1993. The important technical content differences between this edition and the previous edition are as follows: the first edition adds the content of five varieties of driers, namely, 2-ethylhexanoic acid driers, namely, cobalt, manganese, lead, zinc, and calcium, on the basis of the five varieties of driers, namely, cyclohexane acid (and mixed acid) driers, namely, cobalt, manganese, lead, zinc, and calcium, and expands the scope of application of the standard. 1. Added the content of 2-ethylhexanoic acid driers in Chapter 3. Its project requirements are basically the same as those of cyclopentane acid driers, except that the former is light in color and is suitable for color determination by iron cobalt colorimetry, so the color requirements of lead, zinc and calcium driers are added. 1. Changed the appearance requirements of the original cyclopentane acid cobalt from "purple-red viscous, uniform and transparent liquid" to "purple-red viscous and uniform liquid" to make it more practical.
The surface drying time index of the original cyclopentane acid cobalt drying performance was shortened from 4h to 3h to strictly control the product quality. In the determination of metal content in the test method of Chapter 4, the original approximate mass grams of each sample were changed to the grams of pure metal contained, and the actual weighing amount was increased. At the same time, the amount of EDTA standard solution was changed from 20mL to 25mL, thereby reducing the error and improving the accuracy of the analysis.
This standard is proposed by the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of the National Technical Committee for Standardization of Paints and Pigments. The responsible drafting units of this standard are: Shenyang Application Technology Experimental Factory, Changzhou Paint Chemical Research Institute of the Ministry of Chemical Industry. The participating drafting units of this standard are: Shanghai Changfeng Chemical Northwest Paint Factory, Wuhan Shuanghu Paint Co., Ltd. The main drafters of this standard are: Zhang Ming, Su Mei, Zhao Wenyuan, Yihui, Song Jianguo.
W.1 Scope
Chemical Industry Standard of the People's Republic of China
Coating Drier
HG/T2276-1996
Replaces HG/T2276-92
This standard specifies the requirements, test methods, marking, labeling and packaging of liquid carboxylic acid (2-ethylhexanoic acid, cyclohexane acid and mixture of cyclohexane acid and fatty acid) cobalt, lead, manganese, zinc and calcium driers. This standard applies to cobalt soap, lead soap, manganese soap, zinc soap and calcium soap coating driers of the above carboxylic acids. 2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards are subject to revision. Parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T601-88 Preparation of standard solutions for titration analysis (volume analysis) of chemical reagents Varnish, clear oil and dilution method
GB/T 1722-92
Color determination method for varnish, clear oil and dilution agent
GB/T1744-79 (89)
GB/T1922-80 (88)
Catalyst
Solvent oil
Performance determination method
GB3186-82 (89) Sampling of coating products (neqISO1512: 1974, etc.) GB/T5208-85 Flash point determination method for coatings Rapid equilibrium method (neqISO3679: 1983) GB/T 6682—92
Specifications and test methods for water used in analytical laboratories (eqvISO3696:87) GB/T6753.1—86 Determination of grinding fineness of paint (eqvISO1524:1983) GB/T8235—87
GB/T9750—88
Linseed oil
Paint product packaging marking
GB/T13491—92
Paint product packaging general rules
3 Requirements||t t||The product should meet the performance requirements in Table 1:
Approved by the Ministry of Chemical Industry of the People's Republic of China on April 10, 1996, and implemented on January 1, 1997
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Color, number
Fineness\, μm
Metal content2, %
Solubility in solvent
Solution stability
Flash point, ℃
Drying performance (surface drying time), h
1) Refers to the size of suspended particles.
2) The supply and demand parties are allowed to agree separately
HG/T2276—1996
Cycloalkane acid (and mixture of cycloalkane acid and fatty acid) lead
Purple-red viscous
Uniform liquid
No precipitate
Brown-yellow
Uniform transparent
Clear liquid
No precipitate
Red-brown
Uniform transparent
Clear liquid
No precipitate
Performance requirements
Brown-yellow
Uniform transparent
Clear liquid
|No precipitate
Dark yellow
Uniform transparent
Clear liquid
No precipitate
Red-purple viscous
Uniform liquid
No precipitate
W.bzsoso.cOI2-ethyl
Light yellow
Uniform transparent
Clear liquid
No precipitate
4 Test method
HG/T2276—1996
The product should be sampled according to GB3186, and the sample should be divided into two parts, one of which is sealed and stored for reference, and the other is used as a sample for inspection. 4.1 Appearance
Visual determination.
4.2 Color
According to the provisions of GB/T1722.
4.3 Fineness
Perform in accordance with GB/T6753.1.
4.4 Metal content
Unless otherwise specified, the reagents used in this test are analytically pure reagents, and the water used in the test shall comply with the laboratory grade III water specified in GB/T6682.
4.4.1 Determination of cobalt content EDTA titration method
4.4.1.1 Preparation of reagents and solutions
4.4.1.1.1 Ammonia buffer solution (pH=10): Dissolve 20g of ammonium chloride in water, add 100mL of ammonia water, and dilute with water to 1000mL. 4.4.1.1.2 Acid chrome blue K indicator: Dissolve 0.1g of acid chrome blue K (chemically pure) in 2mL of ammonia buffer solution (4.4.1.1.1), and dilute with water to 20mL.
4.4.1.1.3 Ethanol: 95%.
4.4.1.1.4 NY-200 solvent oil (for industrial use) complies with the provisions of GB/T1922. 4.4.1.1.5 Zinc chloride standard titration solution: c(Zncl2)=0.05mol/L, prepared and calibrated according to GB/T601. 4.4.1.1.6 EDTA standard solution: c(EDTA)-0.05mol/L, prepared and calibrated according to GB/T601. 4.4.1.2 Determination steps
Weigh (accurate to 0.0001g) a drying agent sample containing about 0.03g of cobalt, place it in a 250mL conical flask, dilute it with 10mL NY-200 solvent oil (4.4.1.1.4) (heat it in a water bath if necessary), add 20~30mL ethanol (4.4.1.1.3) and shake well. Accurately add 25mL of LEDTA standard solution (4.4.1.1.6) and shake well, add 10mL of ammonia buffer solution (4.4.1.1.1), then add 5 drops of acid chrome blue K indicator (4.4.1.1.2), and titrate with zinc chloride standard titration solution (4.4.1.1.5). The end point is when the solution just changes from blue to pink. 4.4.1.3 Calculate the cobalt content by the following formula, expressed as mass percentage: Co2+(%) =
Where: C2-
cK×0.05894
(c2V2—9
-actual concentration of EDTA standard solution, mol/L: volume of EDTA standard solution added, mL; actual concentration of zinc chloride standard titration solution, mol/L; volume of zinc chloride standard titration solution consumed in one titration, mL; (1)
The mass of cobalt (Co) equivalent to 1.00 mL EDTA standard solution Lc(EDTA) = 1.000 mol/LJ, expressed in grams: mass of the sample, 8.
4.4.1.4 Expression of results
The arithmetic mean of the parallel determination results shall be taken as the determination result. The absolute difference of the parallel determination results shall not be greater than 0.08%. 4.4.2 Determination of lead content EDTA titration method
4.4.2.1 Preparation of reagents and solutions
4.4.2.1.1 Ammonia buffer solution (pH=10): Preparation see 4.4.1.1.1.4.4.2.1.2 Acid chrome blue K indicator: Preparation see 4.4.1.1.2. W.bzsoso: com4.4.2.1.3 Ethanol: 95%.
4.4.2.1.4 NY-200 solvent oil (for industrial use): Comply with the provisions of GB/T1922. 4.4.2.1.5 Tartaric acid.
4.4.2.1.6 Zinc chloride standard titration solution: see 4.4.1.1.5. 4.4.2.1.7 EDTA standard solution: see 4.4.1.1.6. 4.4.2.2 Determination steps
HG/T2276—1996
Weigh (accurate to 0.0001g) a drier sample containing about 0.1g of lead, place it in a 250mL conical flask, dilute it with 10mL NY-200 solvent oil (4.4.2.1.4), add 20~30mL ethanol (4.4.2.1.3) and shake well. Accurately add 25mL EDTA standard solution (4.4.2.1.7), then add a little tartaric acid (4.4.2.1.5) and shake well. Then add 10 mL of ammonia buffer solution (4.4.2.1.1), then add 5 drops of acid chrome blue K indicator (4.4.2.1.2), and titrate with zinc chloride standard titration solution (4.4.2.1.6). The end point is when the solution just changes from blue to pink.
4.4.2.3 Calculation
The lead content shall be calculated according to the following formula and expressed as mass percentage: Pb2+(%):
Wherein: C2-
(c2V-ciVs)X0. 207 2)
actual concentration of EDTA standard solution, mol/L, - volume of EDTA standard solution added, mL; actual concentration of zinc chloride standard titration solution, mol/L; ciWww.bzxZ.net
(2)
V3——volume of zinc chloride standard titration solution consumed in titration, mL; 0.2072——mass of lead (Pb) in grams equivalent to 1. 00mLEDTA standard solution Cc(EDTA)=1.000mol/LJ; m2
mass of the sample, g.
4.4.2.4 Expression of results
The arithmetic mean of the parallel determination results shall be taken as the determination result. The absolute difference of the parallel determination results shall not be greater than 0.08%. 4.4.3 Determination of manganese content EDTA titration method
4.4.3.1 Preparation of reagents and solutions
4.4.3.1.1 Ammonia buffer solution (pH=10): Preparation see 4.4.1.1.1. 4. 4.3.1.2
Acid chrome blue K indicator: Preparation see 4.4.1.1.2. 4.4.3.1.3
Ethanol: 95%.
4.4.3.1.4 NY-200 solvent oil (for industrial use): in accordance with GB/T1922. 4. 4. 3. 1. 5
4. 4.3. 1.6
Ascorbic acid.
Zinc chloride standard titration solution: see 4.4.1.1.5. 4.4.3.1.7 EDTA standard solution: see 4.4.1.1.6. 4.4.3.2 Determination steps
Weigh (accurate to 0.0001g) a drier sample containing about 0.015g of manganese, place it in a 250mL conical flask, dilute it with 10mL NY-200 solvent oil (4.4.3.1.4), add 20~30mL ethanol (4.4.3.1.3) and shake well. Add about 0.1g ascorbic acid (4.4.3.1.5) and shake well. Accurately add 25mL of ETA standard solution (4.4.3.1.7), then add 10mL of ammonia buffer solution (4.4.3.1.1) and 5 drops of acid chrome blue K indicator (4.4.3.1.2), and titrate with zinc chloride standard titration solution (4.4.3.1.6). The end point is when the solution just changes from blue to pink. 4.4.3.3 Calculate the manganese content in the following formula and express it in mass percentage: Mn*+(%)=(cV.-0Vs)X0. 054 94)m3
W.-the volume of EDTA standard solution added, mL; Ve
c1——the actual concentration of zinc chloride standard titration solution, mol/L; Vs
-the volume of zinc chloride standard titration solution consumed in titration, mL; HG/T2276-1996
the mass of manganese (Mn) in grams equivalent to 1.00mLEDTA standard solution Lc(EDTA)=1.000mol/LJ; the mass of the test sample, g.
4.4.3.4 Expression of results
The arithmetic mean of the parallel determination results shall be taken as the determination result. The absolute difference of the parallel determination results shall not be greater than 0.05%. 4.4.4 Determination of zinc content EDTA titration method
4.4.4.1 Preparation of reagents and solutions
4.4.4.1.1 Ammonia buffer solution (pH=10): Preparation see 4.4.1.1.1 Acid chrome blue K indicator: Preparation see 4.4.1.1.2. 4.4.4.1.2
Ethanol: 95%.
4.4.4.1.3
4.4.4.1.5
NY-200 solvent oil (for industrial use): in accordance with GB/T1922 Standard titration solution of zinc chloride: see 4.4.1.1.5. 4.4.4.1.6 EDTA standard solution: see 4.4.1.1.6. 4.4.4.2 Determination steps
Weigh (accurate to 0.0001g) a drier sample containing about 0.016g of zinc, place it in a 250mL conical flask, dilute it with 10mL NY-200 solvent oil (4.4.4.1.4), add 20~30mL ethanol (4.4.4.1.3) and shake well. Add 25mL EDTA standard solution (4.4.4.1.6) accurately and shake well. Add 10 mL of ammonia buffer solution (4.4.4.1.1) and then 5 drops of acid chrome blue K indicator (4.4.4.1.2), and titrate with zinc chloride standard titration solution (4.4.4.1.5). The end point is when the solution just changes from blue to pink. 4.4.4.3 Calculate the zinc content according to the following formula and express it in mass percentage: Zn2+(%)/(V)×0.065 37
Wherein: C2
actual concentration of EDTA standard solution, mol/L; volume of EDTA standard solution added, mL
-actual concentration of zinc chloride standard titration solution, mol/L; Ci
-volume of zinc chloride standard titration solution consumed in titration, mL; X100
(4)
mass of zinc (Zn) equivalent to 1.00mL EDTA standard solution [c(EDTA)=1.000mol/L], expressed in grams; mass of the sample, g.
4.4.4.4 Expression of results
The arithmetic mean of the parallel determination results shall be taken as the determination result. The absolute difference of the parallel determination results shall not be greater than 0.08%. 4.4.5 Determination of calcium content EDTA titration method
4.4.5.1 Preparation of reagents and solutions
4.4.5.1.1 Ammonia buffer solution (pH=10): see 4.4.1.1.1 for preparation. 4.4.5.1.2 Acid chrome blue K indicator: see 4.4.1.1.2 for preparation. 4.4.5.1.3
Ethanol: 95%.
4.4.5.1.4 NY-200 solvent oil (for industrial use): in accordance with GB/T1922. 4.4.5.1.5 Zinc chloride standard titration solution: see 4.4.1.1.5. 4.4.5.1.6 EDTA standard solution: see 4.4.1.1.6. 4.4.5.2 Determination steps
W.bzsoso, cOmHG/T2276—1996
Weigh (accurate to 0.0001g) a drying agent sample containing about 0.01g of calcium, place it in a 250mL conical flask, dilute it with 10mL NY-200 solvent oil (4.4.5.1.4), add 20~30mL ethanol (4.4.5.1.3) and shake well. Accurately add 25mL EDTA standard solution (4.4.5.1.6) and shake well. Add 10mL ammonia buffer solution (4.4.5.1.1), then add 5 drops of acid chrome blue K indicator (4.4.5.1.2), and titrate with zinc chloride standard titration solution (4.4.5.1.5). The end point is when the solution changes from blue to pink. 4.4.5.3 Calculate the calcium content according to the following formula, expressed as mass percentage: Ca+(%)=(cV 1oV.)×0. 040 08×100m5
Where: C21
actual concentration of EDTA standard solution, mol/L; volume of EDTA standard solution added, mL; actual concentration of zinc chloride standard titration solution, mol/L, - volume of zinc chloride standard titration solution consumed in titration, mL; (5)
mass of calcium (Ca) equivalent to 1.00mL EDTA standard solution [c(EDTA)=1.000mol/L], expressed in grams, mass of the sample, g.
4.4.5.4 Expression of results
The arithmetic mean of the results of parallel determinations shall be taken as the determination result. The absolute difference of the results of parallel determinations shall not be greater than 0.05%. 4.5 Solubility in solvents
4.5.1 Determination of cobalt driers
Weigh 5g of the sample, place it in a 50mL beaker, add 15g (5g for metal content of 4%) NY-200 solvent oil, stir to dissolve it (heat it in a water bath if necessary), observe, and if there is no precipitate or sediment, it is completely dissolved. 4.5.2 Determination of lead, manganese, zinc, and calcium driers Weigh 5g of the sample, place it in a 50mL beaker, add 15g NY-200 solvent oil, stir to dissolve it, observe, and if there is no precipitate or sediment, it is completely dissolved.
4.6 Solution stability
Take 50g of the sample and place it in a refrigerator at -10 to -5℃ for 24h. Take it out and immediately inspect it visually. 4.7 Flash point
Perform according to GB/T5208.
4.8 Drying performance (cobalt drier)
Measure 1g 8% cobalt drier with 19g refined linseed oil (iodine value is in accordance with GB/T8235, not less than 175) (other contents are converted) and measure according to GB/T1744. All performance requirements listed in this standard are type inspection items, among which appearance, color, metal content, solubility in solvents, and solution stability are factory inspection items. Under normal production conditions, type inspection shall be carried out at least once every six months. 5 Marking, labeling, packaging
5.1 Marking
Perform according to GB/T9750.
5.2 Label
The product should be attached with a label indicating the product's standard number, model, name, batch number, quantity, quality certification mark, manufacturer name and production date. 5.3 Packaging
Please follow the provisions of GB/T13491.
W.
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