Some standard content:
GB 17512. 1--1998
This standard is equivalent to the Japanese Food Additives Standard (1992 Sixth Edition) and is formulated based on the "Edible Red No. 3 (Erythrosin) Standard" in the book.
The differences between this standard and the Japanese standard are as follows:
1. For product content determination, the Japanese standard adopts the gravimetric method. In addition to the gravimetric method, this standard adds the spectrophotometric method, which is used as the daily determination method, with the gravimetric method as the arbitration method. 2. The total amount of loss on drying, chloride (calculated as NaCl) and sulfate (calculated as NazSO.) in this standard is ≤14.0%, while Japan lists them as loss on drying, with an index of ≤12.0%, and the chloride and sulfate cut-off indexes of ≤2.0%. 3. The determination method of chloride (calculated as NaCl) and sulfate (calculated as Na2SO) in this standard is chemical titration method, and the Japanese standard is ion chromatography
4. The determination method of secondary dye content in this standard is ≤14.0%. The method of WHO/FAO is adopted, and the index is ≤3.0%. 5. The method for determining arsenic content in this standard adopts GB/T8450-1987 "Determination of Arsenic in Food Additives", and the index is ≤0.0001% (As), and the Japanese index is ≤0.0004% (As20). This standard was proposed by the former Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of the dye standardization technical unit of the former Ministry of Chemical Industry and the Food Supervision and Inspection Institute of the Ministry of Health. This standard was drafted by the Shanghai Dye Research Institute and the Health Supervision Institute of the Shanghai Health Bureau. The main drafters of this standard are: Di Yumei, Liu Jing, Ding Deyi, Shi Huaijiong, Qian Kai, and Zhou Yanqin. This standard is entrusted to the dye standardization technical unit of the former Ministry of Chemical Industry for interpretation. 5.11
1 Scope
National Standard of the People's Republic of China
Food Additives
Erythrosine
Food additive
Erythrosine
GB 17512. 1—1998
This standard specifies the requirements, test methods, inspection rules, marking, packaging, transportation and storage of the food additive erythrosine. This standard applies to dyes generated by iodination of fluorescent yellow. This product can be added to food as a colorant. Structural formula:
Molecular formula: Ca, HI, Na2O5H, 0
Molecular weight: 897.88 (according to the international relative atomic mass in 1995). 2 Cited standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is released, the versions shown are valid. All standards will be revised and the use of this standard All parties to the standards should explore the possibility of using the latest versions of the following standards. GB/T601-1988 Preparation of standard solutions for titration analysis (volume analysis) of chemical reagents GB/T602—1988 Preparation of standard solutions for determination of impurities in chemical reagents GB/T603—1988 Preparation of preparations and products used in test methods for chemical reagents GB/T6682--1992 Specifications and test methods for water used in analytical laboratories (neqISO3696:1987) Determination of impurities in food additives
GB/T8450—1987
3 Requirements
3.1 Appearance: This product is a red to reddish brown powder. 3.2 Food additive erythrosine should meet the requirements of Table 1. Approved by the State Administration of Quality and Technical Supervision on October 19, 199842
Implementation on April 1, 1999
Total amount of dryness loss, fluoride (as NaCl) and sulfate (as NazSO,)
Water-insoluble matter
Subsidiary dye
Monument (As)
Heavy metal (as Pb)
Sodium iodide
Test method
GB 17512. 1—1998
Table 1 Requirements
The reagents and water used in this standard, unless otherwise specified, refer to analytically pure reagents and grade 3 water specified in GB/T6682. Unless otherwise specified, the standard solutions, impurity standard solutions, preparations and products required for the test shall be prepared in accordance with the provisions of GB/T601, GB/T602 and GB/T603.
4.1 Appearance
Visual inspection.
4.2 Identification
4.2.1 Reagents and materials
a) Anhydrous ethanol;
6) Ammonium acetate solution: 2g/L;
c) n-butanol;
d) Hydrochloric acid:
e) Sulfuric acid solution: 1+100;
f) Ammonia solution: 4+96.
4.2.2 Instruments and equipment
a) Spectrophotometer;
b) Chromatographic filter paper: No. 1 medium speed, 150mm×250mmc) Chromatographic cylinder: 100mm×200mm;
e) Micro-injector: 10μL.
4.2.3 Test method
4.2.3.1 Weigh 0.1g of sample and dissolve it in 100mL of water. It will be a red clear solution with blue light. Take 5mL of the solution and add 1mL of hydrochloric acid to produce a red precipitate.
4.2.3.2 Weigh 0.1g of sample and dissolve it in sulfuric acid solution. It will be brownish yellow. Take 2~3 drops of this solution and add 5mL of water to produce an orange-red precipitate. 4.2.3.3 Weigh 0.001g of sample and dissolve it in 100mL of ammonium acetate solution. Its maximum absorption wavelength is 526nm±2nm. 4.2.3.4 Take the test solution for paper chromatography, and the Rf value of its main color point should be the same as that of the standard sample. Paper chromatography conditions:
Developing agent: n-butanol + anhydrous ethanol + ammonia solution = 6 + 2 + 3 + temperature 20~25℃;
Test solution concentration: 0.1g/100mL
Test solution dosage: 2μL;
Developing agent front rise limit: 150mm.
4.3 Determination of erythrosine content
4.3.1 Gravimetric method (arbitration method)
4.3.1.1 Method summary
GB 17512. 1-1998
After the sample is dissolved, it is diluted, acidified, boiled, and filtered to a constant weight, and then weighed and calculated to a constant weight. 4.3.1.2 Reagents and materials
Hydrochloric acid solution: 1+49: 1+199.
4.3.1.3 Instruments and equipment
G4 glass crucible filter.
4.3.1.4 Analysis steps
Weigh 2.5g of sample, accurate to 0.0002g. Place in a beaker, dissolve with water, transfer to a 250mL volumetric flask, dilute to scale, and shake well. Take 50mL of the solution, place in a 250mL beaker, heat to boiling, add 20mL of hydrochloric acid (1+49), boil again, then rinse the inner wall of the beaker with 5mL of water, cover with a watch glass, heat in a water bath for about 5h, cool to room temperature, and filter the precipitate with a G4 filter that has been dried to constant weight at 135C and cooled and weighed. Then wash twice with 15 ml of hydrochloric acid (1 + 199), then wash once with 15 ml of water, dry the precipitate and G4 filter in a constant temperature oven at 135°C to constant weight, and weigh after cooling in a desiccator. 4.3.1.5 Expression of analytical results
The percentage content X of erythrosine is calculated according to formula (1): X, = m × 1. 074
Where: m——sample mass, g:
m1—-precipitate mass + g;
1.074——conversion coefficient.
The difference between the results of the two parallel determinations is not greater than 0.2%, and the arithmetic mean is taken as the determination result. 4.3.2 Spectrophotometric colorimetric method
4.3.2.1 Method summary
After dissolving the sample and the standard sample with known content in water, measure their absorbance at the maximum absorption wavelength, and then calculate the content of the sample.
4.3.2.2 Reagents and materials
Erythrosine standard sample: content ≥85.0%. 4.3.2.3 Instruments and equipment
a) Spectrophotometer;
b) Colorimetric III: 10 mm.
4.3.2.4 Preparation of erythrosine standard solution Weigh 0.25g of erythrosine standard sample, accurate to 0.0002g. Dissolve in appropriate amount of water, transfer to a 1000mL brown volumetric flask, dilute to scale, and shake well. Accurately draw 10mL, transfer to a 1000mL brown volumetric flask, dilute to the mark, and shake well (prepare before use). 4.3.2.5 Preparation of erythrosine test solution
Weighing and operation methods are the same as preparation of standard sample. 4.3.2.6 Test method
Measure the absorbance of the standard sample solution and the test solution at a wavelength of 526nm±2nm using 10mm colorimetric blood on a spectrophotometer.
Use water as the reference solution.
4.3.2.7 Expression of analysis results
The mass percentage of erythrosine X is calculated according to formula (2): 5
Wherein: A——absorbance of test solution; A——absorbance of standard solution;
GB 17512. 1-1998
——mass percentage of erythrosine standard sample (weight method). 4.3.2.8 Allowable difference
The difference between the results of two parallel determinations shall not exceed 2%, and the arithmetic mean shall be taken as the determination result. The above determination method uses the weight method as the arbitration method, and any method can be selected for determination according to the conditions in normal times. 4.4 Determination of loss on drying, total amount of chloride (as NaCl) and sulfate (as NaSO4) 4.4.1 Determination of loss on drying
4.4.1.1 Analysis steps
. (2)
Weigh 2g of sample to the nearest 0.01g, place in a weighing bottle of (30~40) mm that has been weighed to a constant weight, and dry in a constant temperature oven at 135℃±2℃ to a constant weight.
4.4.1.2 Expression of analysis results
The mass percentage of loss on drying, X, is calculated according to formula (3): m = m × 100
Where: m——mass of sample before drying, g; -mass of sample after drying to a constant weight, g.
4.4.1.3 Permissible difference
The difference between the results of two parallel determinations shall not exceed 0.2%, and the arithmetic mean shall be taken as the determination result. 4.4.2 Determination of chloride (as NaCl) content 4.4.2.1 Reagents and materials
a) Activated carbon;
b) Nitrobenzene $
c) Nitric acid solution: 1+1;
d) Silver nitrate standard solution: c(AgNO,) = 0.1mol/L; e) Ammonium thiocyanate standard solution: c(NH,CNS) = 0.1mol/L, f) Ammonium ferric sulfate solution:
Preparation: Weigh 14g of ammonium ferric sulfate, dissolve in 100mL of water, filter, add 10mL of nitric acid, and store in a brown bottle. 4.4.2.2 Preparation of test solution
· (3)
Weigh 2g of the sample, accurate to 0.001g. Accurately add 200mL of water, 10g of activated carbon, and 1mL of nitric acid solution, stir evenly, and place for 30min (stir constantly during this period). Filter with dry filter paper. If the filtrate is colored, add 2g of activated carbon and stir occasionally for 1h. Then filter with dry filter paper. If it is still colored, replace the activated carbon and repeat the operation. 4.4.2.3 Analysis steps
Take 50mL of the above test solution and place it in a 500mL conical flask. Add 2mL of nitric acid solution and 10mL of silver nitrate standard solution (add more when the chloride content is high) and 5mL of nitrobenzene, shake vigorously until the silver chloride condenses, add 1mL of ammonium ferric sulfate solution, and titrate the excess silver nitrate to the end point with ammonium thiocyanate standard solution and keep it for 1 min. At the same time, do a blank test in the same way. 4.4.2.4 Expression of analysis results
Chloride (as NaCl) mass percentage X. Calculate according to formula (4): (V/-V)c × 0. 058 4 × 100 = (V/- V)s × 283. 36X.=
Wherein: -
m×200
The volume of 0.1mol/L ammonium thiocyanate standard solution consumed in the titration sample, mL; (4)
GB 17512. 1- 1998
V,—the volume of ammonium thiocyanate standard solution consumed in titrating the blank solution, mL;—the actual concentration of ammonium thiocyanate standard solution, mol/L; 0.0584——the mass of sodium chloride expressed in grams equivalent to 1.00ml. ammonium sulfate standard titration solution [c(NH,CNS)=1.000mal/L;
m-—the mass of the sample, g.
4.4.2.5 Allowable error
The difference between the results of two parallel determinations shall not exceed 0.3%, and the arithmetic mean shall be taken as the determination result. 4.4.3 Determination of sulfate (in terms of Na,SO.) content 4.4.3.1 Reagents and materials
a) Ammonia water;
b) Sodium hydroxide solution: 0.2g/L;
c) Hydrochloric acid solution: 1+99;
d) Ethanol; 95%;
e) Disodium tetrahydroxybenzoaldehyde-potassium chloride mixed reagent: Mix in equal amounts:) Sulfuric acid standard solution: c(1/2H,SO,)=0.1mal/L;g) Phenolic acid ethanol indicator solution: 10g/L;
h) Sodium rhodendronate indicator solution: Weigh 0.1g of sodium rhodendronate and dissolve it in 10mL of water (prepare and use immediately) +i) Barium chloride standard solution: c(1/2BaCl2)=0.1mol/L: Preparation: Weigh 12.25g of barium chloride and dissolve it in 500mL of water, transfer it into a 1000mL volumetric flask, dilute to the scale, and shake well. Calibration: Take 20mL of sulfuric acid standard solution, add 50mL of water, and neutralize with ammonia water until the bright yellow test paper shows alkaline reaction, then titrate with barium chloride standard solution, use rose red sodium indicator solution as liquid external indicator, and the end point is the appearance of rose red spots on the filter paper that remain for 2 minutes. The concentration of barium chloride standard solution X. (mol/L) is calculated according to formula (5): Vc
Where: V——volume of sulfuric acid standard solution, mL; V, volume of chloride standard solution, mL;
-actual concentration of sulfuric acid standard titration solution, mol/L. 4.4.3.2 Analysis steps
(5)
Take 25mL of test solution, place in a 250mL conical flask, add 1 drop of phenolic acid ethanol indicator solution, add sodium hydroxide solution to turn pink, then add hydrochloric acid solution until the pink disappears, then add 30mL of ethanol and 0.4g of tetrahydroxybenzoic acid disodium-potassium chloride mixed indicator, and shake well. After dissolving, titrate with barium chloride standard solution under continuous shaking until the solution turns rose red. During titration, use light to illuminate from the side and observe carefully. Use rose red sodium acid indicator solution as an external indicator for comparison. At the same time, perform a blank test in the same way. 4.4.3.3 Expression of analysis results
Mass percentage of sulfate (in Na2SO, X). Calculate according to formula (6): (V - Vi)c X 0.071
(V - Vi)c X 56.8
× 100
Wherein: V is the volume of barium chloride standard solution consumed in titrating the sample solution, mL; V1 is the volume of barium chloride standard solution consumed in titrating the blank solution, mL; c is the actual concentration of barium chloride standard solution, mol/L, 0.071 is the mass of sodium sulfate in grams equivalent to 1.00 mol/L barium fluoride standard titration solution [c (1/2BaCl2) = 1.000 mol/L];
is the mass of the sample, g.
4.4.3.4 Allowable difference
GB 17512. 1-1998
The difference between the results of two parallel determinations shall not exceed 0.2%, and the arithmetic mean shall be taken as the determination result. 4.4.4 Expression of analysis results
The sum of the mass percentage of drying loss, the mass percentage of chloride (as NaCl) and the mass percentage of sulfate (as Na2SO4) is calculated according to formula (7):
X2=X+X+X.
Wherein: X: — mass percentage of drying loss, %; X: — mass percentage of chloride, %,; X: — mass percentage of sulfate, %. 4.5 Determination of water-insoluble matter
4.5.1 Analysis steps
Weigh 3 g of sample to an accuracy of 0.01 g, place it in a 500 mL beaker, add 250 mL of 50-60 ° C water to dissolve it, filter it with a No. 4 sand core crucible that has been dried to constant weight at 135 ° C ± 2 ° C, and wash it thoroughly with hot water until the washing liquid is colorless, and dry it in a constant temperature oven at 135 ° C ± 2 ° C to constant weight.
4.5.2 Expression of analysis results
The mass percentage of water-insoluble matter X: calculated according to formula (8): m×100
Wherein: m,-
The mass of water-insoluble matter after drying, B;
The mass of the sample, g.
4.5.3 Allowable difference
The difference between the results of two parallel determinations shall not exceed 0.05%, and the arithmetic mean shall be taken as the determination result. 4.6 Determination of secondary dye content
4.6.1 Summary of method
The components are separated and eluted by paper chromatography, and then determined by spectrophotometry. 4.6.2 Reagents and materials
a) n-butanol;
b) ethanol;
c) ammonia solution: 4+96;
d) sodium bicarbonate solution: 4g/Lt
e) acetone solution: 1+1.
4.6.3 Instruments and equipment
a) Spectrophotometer;
b) Chromatographic filter paper: No. 1 medium speed, 150mm×250mm; c) Chromatographic cylinder: $240mm×300mm; Www.bzxZ.net
d) Micro-injector: 100μL;
e) Nessler colorimetric tube: 50mL, with ground stopper; f) No. 3 glass sand core funnel.
4.6.4 Analysis steps
4.6.4.1 Paper chromatography conditions
Developing solvent: n-butanol + ethanol + ammonia solution = 6+2+3Temperature: 20~25℃.
(8)
4.6.4.2 Preparation of sample eluate
GB 17512. 11998
Weigh 1g of sample, accurate to 0.01. Place in a beaker, add appropriate amount of water to dissolve, transfer to a 100mL volumetric flask, dilute to scale, and shake well. Use a microinjector to draw 100uL, evenly apply it on a baseline 25mm away from the bottom edge of the filter paper, in a straight line, so that the width of the solution on the filter paper does not exceed 5mm and the length is 130mm. Blow it dry with a hair dryer, put the filter paper into the chromatography cylinder for development, and spread the bottom edge of the filter paper 10mm below the liquid surface of the developing agent. Wait until the front line of the developing agent rises to 150mm or until the secondary dye is separated satisfactorily, as shown in Figure 1. Take out the chromatography filter paper and blow it dry with a hair dryer with cold air. At the same time, develop the blank filter paper under the same conditions (the blank filter paper must be cut from adjacent parts of the same 600mmX600mm filter paper as the filter paper used for developing the test solution). 150mm
Subsidiary dye (1)
Main dye
Subsidiary dye (2)
Subsidiary dye (3)
Figure 1 Schematic diagram of subsidiary dye chromatography
Cut each subsidiary dye and the filter paper corresponding to each subsidiary dye on the blank filter paper into the same size and cut into thin strips of about 5mm×15mm. Place them in 50mL Nessler colorimetric tubes, accurately add 5mL of acetone solution to each, shake for 3 to 5 minutes, then accurately add 20mL of sodium bicarbonate solution and shake thoroughly. Filter the extracts naturally in No. 3 glass sand core funnels. The filtrate must be clear and free of suspended matter. At the maximum absorption wavelength of each subsidiary dye, use 50mm colorimetric blood to measure the absorbance on a spectrophotometer. Use a mixture of 5mlL of acetone solution and 20mL of sodium bicarbonate solution as the reference solution. 4.6.4.3 Preparation of standard eluate
Accurately pipette 3 ml of the above 1% test solution into a 100 ml volumetric flask, dilute to the mark, and shake well. Use a microinjector to pipette 100 μL and evenly apply it on a baseline 25 mm from the bottom edge of the filter paper. Blow it dry with cold air, put the filter paper into the chromatography cylinder, the front line of the developing agent only rises 40 mm, take it out and blow it, then cut it from the baseline to 3 mm below the front line of the developing agent. The extraction operation is the same as above, and the absorbance is measured at the maximum absorption wavelength using a 10 mm colorimetric III. At the same time, use a blank filter paper to develop under the same conditions, and measure the absorbance of the extract after the same operation. 4.6.4.4 Expression of analysis results
The mass percentage content X of the secondary dye is calculated according to formula (9): (A - b) + .... + (A, - b,)
Wherein: A,.*,A.--the absorbance of each secondary dye extract calculated at a light path length of 50 mm; b.*,bh
A.--the absorbance of the standard extract calculated at a light path length of 10 mm; b.--the absorbance of the standard reference blank extract calculated at a light path length of 10 mm; 5--converted to the ratio calculated at a light path length of 10 mm; 58
GB 17512. 1 1998
3--the reference concentration of the standard extract based on 1% test solution, %; S--the total content of the sample.
4.6.4.5 Allowable difference
The difference between the results of two parallel determinations shall not exceed 0.2%, and the arithmetic mean shall be taken as the determination result. 4.7 Determination of content
4.7.1 Reagents and materials
a) Nitric acid;
b) Sulfuric acid solution: 1+1:
c) Nitric acid-perchloric acid mixed solution: 3+1; d) Arsenic standard solution: 0.001mgAs/mL. Take 1mL of the standard solution containing 0.1mgAs/mL in a 100mL volumetric flask and dilute to the scale.
4.7.2 Instruments and equipment
The device of the arsenic spot method in GB/T8450.
4.7.3 Analysis steps
Weigh 1g of the sample to an accuracy of 0.01g. Place in a 250mL beaker, add 1.5mL nitric acid and 5mL sulfuric acid, heat with low heat to drive out nitrogen dioxide gas, stop heating when the solution turns brown. After cooling, add 5mL nitric acid-perchloric acid mixture, and heat with strong heat until the solution is transparent, colorless or slightly yellow. If it is still opaque, add 1mL nitric acid-perchloric acid mixture after cooling, continue heating until the solution is clear, colorless or slightly yellow and produces white smoke, and stop heating. After cooling, add 5mL water and heat to boiling, remove residual nitric acid-perchloric acid (add water and boil once if necessary), continue heating until white smoke occurs, keep for 10 minutes, cool and transfer to a 100mL conical flask. The following is carried out according to 2.4 of GB/T84501987.
4.8 Determination of heavy metal content
4.8.1 Reagents and materials
a) Sulfuric acid;
b) Hydrochloric acid;
c) Hydrochloric acid solution: 1+3;
d) Ammonia solution: 1+2;
e) Acetic acid solution: 1+4;
f) Sodium sulfide solution: 100g/L
g) Lead standard solution: 0.01mgPb/ml. Take 10mL of the lead standard solution containing 0.1mgPb/mL in a 100mL volumetric flask and dilute to the mark.
4.8.2 Analysis steps
Weigh 2.5g of the sample, accurate to 0.01g, put it in a platinum (quartz or porcelain), add a little sulfuric acid to moisten it, slowly burn it, and try to ash it at low temperature, let it cool, add 1mL of sulfuric acid and slowly heat it until sulfuric acid vapor is almost gone. Put it in an electric furnace, burn it at 450-550C until it is ash, and then let it cool. Add 3ml of hydrochloric acid. Shake well, then add 7mL of water and shake the hook, filter it with quantitative analysis filter paper (No. 5C), wash the residue on the filter paper with 5mL of hydrochloric acid solution and 5mL of water, combine the washing liquid and the filtrate, add water to make up to 50mL, and use it as the sample solution. Perform the same operation without the sample, and use it as the blank test solution. Take 20mL of the sample solution, put it into a Nessler colorimetric tube, add 1 drop of phenolic acid indicator, add ammonia solution until the solution turns red, then add 2mL of acetic acid solution, filter if necessary, wash with water, add water to 50mL, as the test solution. In addition, take 20mL of the blank test solution, put it into a Nessler colorimetric tube, add 2mL of lead standard solution and 1 drop of phenolic acid indicator, and prepare it in the same way as the test solution, as the comparison solution. Then add 2 drops of sodium sulfide solution to the test solution at the same time, shake well, and let it stand for 5 minutes. The color of the test solution shall not be darker than that of the comparison solution.
4.9 Determination of sodium iodide content
4.9.1 Reagents and materials
GB 17512. 1—1998
Silver nitrate standard solution: c (AgNO,) = 0.00l mol/L4.9.2 Instruments and equipment
a) Digital millivoltmeter:
b) Iodide ion selective electrode;
c) Reference electrode;
d) Electromagnetic stirrer.
4.9.3 Preparation of test solution
Weigh 1.0g of sample, accurate to 0.0002g, place in a beaker, add 75mL of water accurately measured, stir and dissolve with an electromagnetic stirrer, and use this as the test solution.
4.9.4 Test method
Insert the iodine ion selective electrode and the reference electrode into the dissolved test solution, then adjust the millivolt reading of the millivoltmeter, and titrate with the silver nitrate standard solution under sufficient stirring.
When starting the titration, add 0.5mL each time, gradually, then observe the potential change of each drop, and record the potential reading. When approaching the end point, the drop speed is reduced to the titration amount of 0.1mL each time, record the stable potential reading, and continue to titrate until there is only a small potential difference between two titrations.
Plot the recorded millivolt reading and the corresponding titration volume of the silver nitrate standard solution, and calculate the corresponding volume of the silver nitrate solution according to the maximum slope of the graph curve.
4.9.5 Expression of analysis results
The mass percentage X of sodium iodide is calculated according to formula (10): X = V × 0.000 15 × 100
Wherein: V is the volume of the silver nitrate standard solution consumed in the titration of the sample, mL; 10
0.00015—一与1.00mol/L silver nitrate standard titration solution, [c(AgNO）=1.000mol/L) is equivalent to the mass of sodium iodide expressed in grams.
5 Inspection rules
5.1 The food additive erythrosine should be inspected by the product quality inspection department of the production unit. The production unit should ensure that the quality of all food additives erythrosine shipped out of the factory meets the requirements of this standard and have a quality certificate in a certain format. 5.2 The user unit can inspect the quality of the food additive erythrosine received in accordance with the inspection rules and test methods specified in this standard to check whether its quality indicators meet the requirements of this standard. 5.3 The food additive erythrosine is a batch of products with one production batch number. 5.4 Sampling should be done by selecting 10% of the total number of boxes (each box is 10×0.5kg) of each batch of product packaging boxes, and then selecting 10% of the bottles from the selected boxes. From the selected bottles, take out no less than 50g of sample from the center of each bottle. Be careful when sampling to prevent foreign impurities from falling into the product. Mix the sample quickly and take out about 100g from it. Put it in two clean and dry ground glass bottles, seal them with paraffin, and indicate the manufacturer name, product name, batch number, and production date. One bottle is for inspection and one bottle is kept. 5.5 If one of the indicators in the inspection does not meet the requirements of this standard, samples should be selected from twice the amount of packaging for re-inspection. If the result of the re-inspection still does not meet the requirements of this standard, the whole batch of products cannot be accepted. 6 Marking, packaging, transportation, storage
6.1 The packaging box should be clearly marked, including: "food additives", product name, trademark, manufacturer name, manufacturer address, specifications, batch number, production date, production license number, number of bottles. 6.2 Each bottle of product leaving the factory should be accompanied by a quality certificate, including: manufacturer name, product name, batch number, production date, net content, instructions for use, proof that the product quality complies with this standard and the standard number. 6.3 Food additives Erythrosin is packed in polyethylene plastic bottles, each bottle is 0.5kg, and every 10 bottles are sealed in a carton. 550
GB17512.1—1998
6.4 It must be protected from rain, moisture and sunlight during transportation, and should be stored in a dry and cool warehouse. 6.5 This product must not be mixed, transported or stacked with other toxic or harmful substances during storage and transportation. 5 The shelf life of this product is five years from the date of production. If it is overdue, re-inspect whether it meets the requirements of this standard, and it can still be used if it is qualified. 6 6
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