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Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB 25583-2010: The national food safety standards of food additives sodium aluminosilicate Status: Valid
Basic dataStandard ID: GB 25583-2010 (GB25583-2010)Description (Translated English): The national food safety standards of food additives sodium aluminosilicate Sector / Industry: National Standard Classification of Chinese Standard: X40 Classification of International Standard: 67.220 Word Count Estimation: 12,171 Date of Issue: 2010-12-21 Date of Implementation: 2011-02-21 Regulation (derived from): Ministry of Health Bulletin No. 19 of 2010 Issuing agency(ies): Ministry of Health of the People's Republic of China Summary: This Chinese standard applies to water glass prepared food additive sodium aluminosilicate. GB 25583-2010: The national food safety standards of food additives sodium aluminosilicate---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.The national food safety standards of food additives sodium aluminosilicate National Food Safety Standard Food additive sodium aluminosilicate Issued on. 2010-12-21 2011-02-21 implementation National Standards of People's Republic of China People's Republic of China Ministry of Health issued ForewordAppendix A of this standard is a normative appendix. National Food Safety Standard Food additive sodium aluminosilicate1 ScopeThis standard applies to food additive sodium aluminosilicate Preparation of water glass.2 Normative referencesThe standard file referenced in the application of this standard is essential. For dated references, only the edition date of the note Apply to this standard. For undated references, the latest edition (including any amendments) applies to this standard.3 molar ratio of componentsThe molar ratio (molar ratio) Na2O/Al2O3/SiO2 is approximately 1. 1. 13. 4. Technical Requirements 4.1 Sensory requirements. comply with Table 1. Table 1 Sensory requirements Project requires test methods Color White take appropriate sample is placed in 50mL beaker, observe the color and texture in natural light status. Organization amorphous state fine powder or beads 4.2 Physical indicators. to comply with Table 2. Table 2. Physical and chemical indicators Item Index Test Method Silicon dioxide (SiO2), w /% 66.0 ~ 76.0 Appendix A A.4 Aluminum oxide (Al2O3), w /% 9.0 ~ 13.0 A.5 Appendix A Sodium oxide (Na2O), w /% 4.0 ~ 7.0 A.6 in Appendix A Lead (Pb)/(mg/kg) ≤ 5 Appendix A A.7 Arsenic (As)/(mg/kg) ≤ 3 Appendix A A.8 Heavy metals (Pb)/(mg/kg) ≤ 10 Appendix A A.9 Loss on drying, w /% ≤ 8.0 Appendix A A.10 Loss on ignition, w /% 8.0 ~ 13.0 Appendix A A.11 pH (20% slurry) 6.5 to 10.5 A.12 in Appendix AAppendix A(Normative) Testing method A.1 Warning The standard test methods required for use of some strong acid, when used, be careful to avoid splashing on the skin! As should be immediately splashed on the skin Rinsed with water, severe cases should be treated immediately. When using a volatile acid, to be carried out in a fume hood. A.2 General Provisions The standard test methods used in the reagents and water in the absence of other specified requirements, refer to analytically pure reagents and GB/T 6682-2008 in Three water regulations. Test with the standard titration solution, impurity standard solution, preparations and products, did not indicate when the other requirements, according HG/T 3696.1, HG/T 3696.2, the provisions of HG/T 3696.3 of preparation. A.3 Identification Test A.3.1 Identification of silicate The 0.5 g sample was mixed with 2.5 g of anhydrous potassium carbonate, on the electric heating in a platinum crucible to melt the mixture, cooled, 5 mL Water and let stand 3 min, the crucible plus micro heat, add 50 mL of water to dissolve. Completely transferred to a beaker, was added dropwise a solution of hydrochloric acid (11) to airless Bulbs, add 10 mL of hydrochloric acid, evaporated to dryness on a steam bath to cool. Was added 20 mL of water, filtered boiling, insoluble gel residue Used to identify silicon. A filtrate is used to identify the test solution of aluminum. The gelatinous residue was taken platinum crucible, carefully add 5 mL of hydrofluoric acid. The precipitate was dissolved. Heating, placed in the vapor above the crucible A glass rod moistened with a drop of water, the water droplets become cloudy. A.3.2 Identification of aluminum ions Was added dropwise in the test solutions A (A.3.1) in aqueous ammonia solution (11), a white gelatinous precipitate, addition of excess aqueous ammonia solution, no precipitate Dissolved. Was added dropwise a solution of sodium hydroxide (40 g/L) to give a white gelatinous precipitate, the precipitate dissolved when added in excess. A.3.3 Identification of sodium ions Wetting platinum wire with hydrochloric acid, colorless to burn in the flame, then dipped a little in the test solution combustion flame, the flame that is dark yellow. A.4 Determination of silica A.4.1 Method summary Silica in the sample with hydrofluoric acid forming volatile matter by burning volatile, by determining the mass difference before and after ignition calculated silica content. A.4.2 Reagents and materials A.4.2.1 sulfuric acid. A.4.2.2 hydrochloric acid. A.4.2.3 hydrofluoric acid. A.4.3 Instruments and Equipment High-temperature furnace. temperature can be maintained at 900 ℃ ± 25 ℃. A.4.4 Analysis step Weigh was 105 ℃ ± 2 ℃ bake a sample of about 0.5 g 2 h, to the nearest 0.000 2 g, into a 200 mL beaker with a small amount of water will Wash the beaker wall. Added 30 mL and 15 mL of sulfuric acid, hydrochloric acid, in a hood on a hot plate heated until white smoke is generated, added 15 mL After cooling Hydrochloric acid, heated again to generate white smoke. Evaporated to about 10 mL solution was left and cooled, was added 70 mL of water, filtered using filter paper, and dried Hot water and sediment filter. The filter paper and transferred to precipitate a platinum crucible, burning to constant mass at 900 ℃ ± 25 ℃, saying its quality. Residue was moistened with water, 8 drops of sulfuric acid was added followed by 15 mL of hydrofluoric acid, heated on a hot plate to produce white smoke. Steam until nearly dry, add 5 mL of water. After cooling, 3 Drops of sulfuric acid and 10 mL of hydrofluoric acid, hot plate evaporation to near dryness on a hot plate heated to white smoke rush the net. The crucible in 900 ℃ ± 25 ℃ to constant burning quality. The mass loss after hydrofluoric acid is added to the sample quality silica (SiO2) taken. A.4.5 Calculation Results Silica content of silicon dioxide (SiO2) mass fraction w1 and its value is expressed in%, according to formula (A.1) Calculated. 0211 × - = m mmw (A.1) Where. 1m - for the first time after a constant burning quality to value the quality of the crucible and precipitate in grams (g); 2m - the second (after adding the hydrofluoric acid treatment) value to the quality of constant quality after burning crucible and precipitate in grams (g); m - mass of the sample value in units of grams (g). Take the arithmetic mean of the parallel determination results of the measurement results, the results of two parallel determination of the absolute difference is not more than 0.1%. A.5 Determination of aluminum oxide A.5.1 Method summary The samples were processed, an excess of disodium edetate solution in the test solution, and aluminum complex, with xylenol orange as indicator Zinc chloride standard titration solution titrate excess of disodium edetate solution. A.5.2 Reagents and materials A.5.2.1 perchloric acid. A.5.2.2 hydrofluoric acid. A.5.2.3 hydrochloric acid. A.5.2.4 ammonia. A.5.2.5 hydrochloric acid solution. 11. A.5.2.6 disodium EDTA standard titration solution. c (EDTA) = 0.01 mol/L. A.5.2.7 zinc chloride standard titration solution. c (ZnCl2) = 0.01 mol/L. A.5.2.8 xylenol orange indicator solution. 5 g/L. A.5.3 Analysis step Weigh was 105 ℃ ± 2 ℃ bake a sample of about 0.3 g 2 h, to the nearest 0.0002 g, into a platinum crucible, with 8 to 10 drops of water dripping Run wet. Perchloric acid was added 15 mL and 10 mL of hydrofluoric acid, in a hood on a hotplate until generate a large amount of perchloric acid white smoke, steam to near Dry After cooling 10 mL of hydrofluoric acid and heated to generate dense white smoke again evaporated to near dryness, added 4 mL of hydrochloric acid was dissolved by heating, After cooling completely transferred to a 250 mL volumetric flask, wash with hot water in a platinum crucible and the lotion into the volumetric flask and dilute to the mark with water, shake uniform. Pipette 50.00 mL of the solution into 250 mL conical flask, add water to 100 mL, was added 20.00 mL disodium edetate Standard Solution, add 3 to 4 drops drops xylenol orange indicator solution, the solution was adjusted with ammonia reddish. 1min boiling on a hot plate, remove the cold But (if the excess ammonia, the solution was adjusted with hydrochloric acid solution was bright yellow, then the excess two drops). Titration with zinc chloride standard titration solution to the solution from Yellow to reddish color is the end. While the same treatment the blank test solution. In addition to the blank test without the sample, the type and amount of addition of reagents and other operating and measured in the same test. A.5.4 Calculation Results Aluminum oxide content of aluminum oxide (Al2O3) mass fraction w2 and its value is expressed in%, according to formula (A.2) Calculated. () 2 ×× - = cMVVw (A.2) Where. Numerical zinc chloride standard titration solution volume consumed V0-- blank test, in milliliters (mL); Numerical zinc chloride standard titration solution volume consumed V1-- titration, in milliliters (mL); c - accurate zinc chloride standard titration solution concentration value in units of moles per liter (mol/L); Numerical m-- sample mass, expressed in grams (g); (1/2Al2O3) molar mass of aluminum oxide M-- value, in units of grams per mole (g/mol) (M = 50.98). Take the arithmetic mean of the parallel determination results of the measurement results, the results of two parallel determination of the absolute difference is not more than 0.1%. A.6 Determination of sodium oxide A.6.1 Method summary Sample after treatment, the sample solution is introduced into the flame emission meter, an aerosol spray system introduced in the flame, the flame will again rely on Sample solution was evaporated, and excited atoms generated spectrum, spectrum sodium atoms occur at characteristic wavelengths 589.0nm under its line intensities and sodium oxide Proportional content, compared with standard series quantitation. A.6.2 Reagents and materials A.6.2.1 perchloric acid. A.6.2.2 hydrofluoric acid. A.6.2.3 hydrochloric acid. A.6.2.4 Sodium standard solution. 1 mL solution of sodium (Na) 0.1 mg. Pipette 10.00 mL sodium standard solution according to HG/T 3696.2 prepared, placed in 100mL flask, diluted with water to the mark. The solution was prepared prior to use. A.6.2.5 sulfate standard solution. 1 mL solution containing sodium sulfate (Na2SO4) 100 mg. Accurately weighed 10.00 g after 95 ℃ ~ 105 ℃ drying 2 h, cooled to room temperature and anhydrous sodium sulfate, dissolved in water and transferred to 100 mL capacity Volumetric flask, dilute to the mark, shake, placed in the refrigerator to save, backup. A.6.2.6 two water. in line with GB/T 6682-2008. A.6.3 Instruments and Equipment A.6.3.1 flame photometer. A.6.3.2 conductivity meter. A.6.4 Analysis step A.6.4.1 Determination of sodium correction A.6.4.1.1 Preparation of sample solution Weigh the sample was 105 ℃ ± 2 ℃ bake 2 h of 12.5 g, accurate to 0.0002 g, placed in 400 mL water beaker 240 mL, High speed stirring for at least 5 min. The mixture was completely transferred to 100 mL volumetric flask, dilute to the mark, shake. A.6.4.1.2 Preparation of standard solution Pipette standard solution of sodium 0.00 mL, 0.50 mL, 1.00 mL, 2.00 mL, 5.00 mL, were placed in 100 mL volumetric flask, Diluted with water to the mark. A.6.4.1.3 Determination The sample and standard solution electric conductivity detected. In the electrical conductivity of the vertical axis, the quality of sodium (mg) as abscissa, work curve. A.6.4.1.4 Calculation Results Correction sodium content of sodium oxide (Na2O) mass fraction F and its value is expressed in%, according to formula (A.3) Calculated. 010,437.0 1 ×× = mF (A.3) where. Numerical solution m1-- quality sample isolated from the working curve of sodium in milligrams (mg); Numerical m-- sample mass, expressed in grams (g); 0.437-- sodium sulfate sodium oxide conversion factor. Take the arithmetic mean of the parallel determination results of the measurement results, the results of two parallel determination of the absolute difference is not more than 0.1%. A.6.4.2 Preparation of sample solution Weigh the sample was ± bake about 0.3 g 105 ℃ 2 ℃ 2h, and accurate to 0.000 2 g, placed in a platinum crucible, with 8 to 10 drops of water dripping wet. plus Into 15 mL of perchloric acid and 10 mL of hydrofluoric acid, in a hood on a hot plate heated until white smoke generates a lot of perchloric acid, evaporated to near dryness, cooling After 10 mL of hydrofluoric acid, was again heated to generate dense white fumes evaporated to near dryness, was added 4 mL of hydrochloric acid, dissolved by heating, cooled and finished Full transferred to a 500 mL volumetric flask, wash with hot water in a platinum crucible and lotion incorporated into the flask, diluted with water to the mark. Pipette on 10.00 mL of said solution into 100 mL volumetric flask, dilute to the mark, shake. While the same treatment the blank test solution. A.6.4.3 Preparation of the blank test solution In addition to the blank test without the sample, the type and amount of addition of reagents and other operations of the same prepared sample solution. A.6.4.4 Preparation of standard solutions Pipette sodium standard solution 0.00 mL, 1.00 mL, 2.00 mL, 3.00 mL, 4.00 mL, were placed in 100 mL volumetric flask, dilute with water Release to the mark. A.6.4.5 Determination The test solution and standard solution at a wavelength of 589.0 nm at zero adjustment water was measured line intensities. Quality of sodium (mg) is a cross Coordinates corresponding to the line intensity as the ordinate, drawing working curve. A.6.5 Calculation Results Sodium oxide content of sodium oxide (Na2O) mass fraction w3 and its value is expressed in%, according to formula (A.4) calculated as follows. () mmw - ×× × - = 0 10348.1 301 3 (A.4) Where. Numerical quality test solution m1-- isolated from the working curve of sodium in milligrams (mg); Numerical quality blank solution m0-- isolated from the working curve of sodium in milligrams (mg); Numerical m-- sample mass, expressed in grams (g); 1.348-- sodium sodium oxide conversion factor; F-- determined according to A.6.4.1 correction sodium content, expressed as% values. Take the arithmetic mean of the parallel determination results of the measurement results, the results of two parallel determination of the absolute difference is not more than 0.1%. A.7 Determination of Lead A.7.1 Reagents and materials A.7.1.1 4- methyl amyl ketone -2 (MIBK). A.7.1.2 hydrochloric acid solution. 120. A.7.1.3 ammonia solution. 11. A.7.1.4 ammonium sulfate solution. 300 g/L. Weigh 30g of ammonium sulfate [(NH4) 2SO4], dissolved in water and add water to 100 mL. A.7.1.5 ammonium citrate solution. 250 g/L. Weigh 25g of ammonium citrate, dissolved in water and add water to 100 mL. A.7.1.6 bromothymol blue solution. 1 g/L. A.7.1.7 diethyl dithiocarbamate (DDTC) solution. 50 g/L. A.7.1.8 Weigh 5 g diethyl dithiocarbamate, dissolved in water and add water to 100 mL. A.7.1.9 Lead standard solution. 1 mL solution containing lead (Pb) 0.001 mg. Pipette 1.00 mL of lead standard solution according to HG/T 3696.2 prepared, placed in 1000 mL volumetric flask, dilute to the mark, shake. The solution was prepared prior to use. A.7.1.10 two water. in line with GB/T 6682-2008. A.7.2 Instruments and Equipment Atomic absorption spectrophotometer. A.7.3 Analysis step A.7.3.1 Preparation of test solution Weigh 10.00 g ± 0.01 g sample was placed in 250 mL beaker, add 50 mL of hydrochloric acid solution, cover the surface of the dish, slowly heated to Boiling and kept boiling for 15 min, cooled, insolubles were allowed to stand for settling. The solution was filtered to a 100 mL volumetric flask three times with hot water clean Wash the beaker (try to make insolubles remain in the beaker) per 10 mL of water, and finally with 15 mL of hot water to clean the filter and the filtrate was incorporated into 100 mL Volumetric flask. After cooling, diluted with water to the mark, shake, backup, keep this solution as filtrate B, for lead content of arsenic, heavily Determination of the genus. Pipette pipette 10.00 mL filtrate B, placed in 125 mL separatory funnel, add water to make 60 mL. Add 2 mL ammonium citrate solution Liquid drops 3 to 5 drops of bromothymol blue indicator solution, the pH is adjusted with ammonia solution from yellow to blue, add 10 mL of ammonium sulfate solution, 10 mL of diethyl Dithiocarbamate (DDTC) solution, shake. Place about 5 min, transferred 10.00 mL 4- methyl amyl ketone -2 (MIBK), severe vibration Shake extract 1 min, after standing layer, the aqueous layer was discarded, the 4-methyl amyl ketone -2 (MIBK) layer into a 10 mL stoppered graduated tube, and set aside. A.7.3.2 blank test solution. In addition to the blank test without the sample, the preparation of the same kind and amount of the test solution and other operations and the addition of reagents. A.7.3.3 Preparation of standard reference solution than Pipette respectively, 0.00 mL, 2.00 mL, 4.00 mL, 6.00 mL, 8.00 mL of lead standard solution, placed in five 125 mL separating funnel , Each 5 mL of hydrochloric acid solution was added, according to 7.3.1 from "additional water to 60 mL" start simultaneously with the sample solution is treated similarly. A.7.3.4 Determination The test solution and standard solution at a wavelength of 283.3 nm at water zero adjustment, the absorbance was measured. Quality of lead (mg) is a cross Coordinates corresponding absorbance as the ordinate, drawing working curve. A.7.4 Calculation Results Lead in lead (Pb) mass fraction w4 and its value in mg/kg according to formula (A.5) Calculated. 4 ×× - = -m mmw (A.5) Where. m1 - Numerical test solution isolated from the working curve lead mass in milligrams (mg); m0 - value blank test solution isolated from the working curve lead mass in milligrams (mg); m - the value of the sample mass, in grams (g). Take the arithmetic mean of the parallel determination results of the measurement results, the results of two parallel determination of the absolute difference is not more than 1 mg/kg. A.8 Determination of Arsenic A.8.1 Reagents and materials With GB/T 5009.76-2003 of Chapter 9. A.8.2 Instruments and Equipment With GB/T 5009.76-2003 Chapter 10. A.8.3 Analysis step Pipette 10.00 mL filtrate B (A.7.3.1), placed in a conical flask arsenic measuring apparatus, the following according to GB/T 5009.76-2003 11th Operation. Limits formulated solution. Pipette 3.00 mL of arsenic standard solution (1 mL solution containing 1.0 μgAs), with the same sample at the same time Management. A.9 heavy metals (Pb) Determination A.9.1 Reagents and materials A.9.1.1 hydrochloric acid solution. c (HCl) ≈0.5 mol/L. A.9.1.2 hydrochloric acid solution. 120. A.9.1.3 ammonia solution. 13. A.9.1.4 nitric acid solution. 19. A.9.1.5 phenolphthalein indicator solution. A.9.1.6 sodium sulfide glycerol solution. A.9.1.7 acetate buffer solution. pH = 3.5. Weigh 25.0 g ammonium acetate dissolved in 25 mL of water, add 45 mL of hydrochloric acid solution (A.9.1.1), with a hydrochloric acid solution (A.9.1.2) or ammonia The pH was adjusted to 3.5 of 5 (pH meter), diluted with water to 100 mL. A.9.1.8 Lead standard solution. 1 mL solution containing lead (Pb) 0.001 mg; Pipette 1.00 mL of lead standard solution according to HG/T 3696.2 prepared, placed in 1000 mL volumetric flask, dilute to the mark, shake. The solution was prepared prior to use. A.9.2 Analysis step A.9.2.1......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB 25583-2010_English be delivered?Answer: Upon your order, we will start to translate GB 25583-2010_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB 25583-2010_English with my colleagues?Answer: Yes. The purchased PDF of GB 25583-2010_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. 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