GB 25578-2010 English PDFUS$319.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB 25578-2010: National food safety standards of food additives talc Status: Obsolete
Basic dataStandard ID: GB 25578-2010 (GB25578-2010)Description (Translated English): National food safety standards of food additives talc Sector / Industry: National Standard Classification of Chinese Standard: X42 Classification of International Standard: 67.220.20 Word Count Estimation: 8,874 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 talc as raw material by physical crushing method were food additives talc. GB 25578-2010: National food safety standards of food additives talc---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.National food safety standards of food additives talc National Food Safety Standard Food additives Talc 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 additives Talc1 ScopeThis standard applies to talc as raw material by physical crushing method were food additive talc.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 Technical requirements3.1 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 in natural light And texture. Organization Status powder 3.2 Physical indicators. to comply with Table 2. Table 2. Physical and chemical indicators Item Index Test Method Silica, w /% ≥ 58.0 Appendix A A.4 Magnesia, w /% ≥ 30.0 Appendix A A.5 Whiteness ≥ 85.0 A.6 in Appendix A In Acid (as SO 4), w /% ≤ 1.5 Appendix A A.7 Loss on ignition, w /% ≤ 6.0 Appendix A A.8 Loss on drying, w /% ≤ 0.5 A.9 in Appendix A Water-soluble material, w /% ≤ 0.1 Appendix A A.10 Water-soluble iron by test A.11 in Appendix A By pH test A.12 in Appendix A Fineness (45μm test sieve through rate), w /% ≥ 98.0 Appendix A A.13 TABLE 2 (cont.) Item Index Test Method Arsenic (As)/(mg/kg) ≤ 3 Appendix A A.14 Lead (Pb)/(mg/kg) ≤ 5 Appendix A A.15 Heavy metals (Pb)/(mg/kg) ≤ 10 Appendix A A.16 Amphibole asbestos may not be detected in Appendix A A.17Appendix A(Normative) Testing method A.1 Warning Reagents of this standard test method for use in corrosive, the operator must be careful! As should be immediately washed with water splashed on the skin Wash, severe cases should seek medical care immediately. When using flammable, do not use open flame heating. A.2 General Provisions The standard test methods used in the reagents and water, did not indicate when the other requirements, refer to analytically pure reagents and GB/T 6682-2008 Three water regulations. Test the required standard titration solution, impurity standard solution, preparations and products, did not indicate when additional requirements are Press HG/T 3696.1, HG/T 3696.2, the provisions of HG/T 3696.3 of preparation. A.3 Identification Test A.3.1 X-ray diffractometer X-ray diffraction samples were tested in spacing is 0.934nm, 0.466 nm and 0.312nm at diffraction peaks. A.3.2 Infrared spectroscopy method Infrared absorption spectrometer samples were tested have major absorption peak at 1015cm-1 and at 450cm-1 place. A.3.3 chemical A.3.3.1 Reagents and materials A.3.3.1.1 anhydrous sodium carbonate. A.3.3.1.2 anhydrous potassium carbonate. A.3.3.1.3 hydrochloric acid. A.3.3.1.4 ammonia solution. 23. A.3.3.1.5 ammonium chloride solution. 100g/L. A.3.3.1.6 ammonium carbonate solution. 100g/L. A.3.3.1.7 disodium hydrogenphosphate (Na2HPO3 · 12H2O) solution. 160 g/L. A.3.3.1.8 ammonium chloride solution. 100g/L. A.3.3.2 analysis step Weigh about 0.2g sample was placed in a platinum crucible, add anhydrous sodium carbonate 0.9g and 1.3g of anhydrous potassium carbonate, and mix. Was heated on a hotplate Until completely melted, cooled, boiling water with about 5mL melt is transferred to a beaker, hydrochloric acid was added dropwise to no bubble. Plus 10mL of hydrochloric acid placed Evaporated to dryness on a water bath. After cooling, 20mL of water, heated to boiling, and filtered. Residue gel-like substance, the filtrate was added ammonium chloride solution And ammonium carbonate does not precipitate when added disodium hydrogen phosphate solution, should produce a white precipitate. The precipitate was isolated, ammonia water solution, precipitated It should not be dissolved. A.4 Determination of silica According to GB/T 15343-1994 in 5.2.1 were measured. A.5 Determination of magnesium oxide Using separate R2O3-EDTA complexometric titration, according to GB/T 15343-1994 in 5.6.1 were measured. A.6 Determination of whiteness A.6.1 Instruments and Equipment A.6.1.1 whiteness meter. A.6.1.2 Working whiteboard. shall comply with GB/T 5950-2008 in Chapter 6. A.6.2 Analysis step A certain amount of sample into the sample vessel pressure, pressed into a smooth surface, no texture, no defect, no stain test model. Each batch of products to be Pressing three test model. By the use of the instrument described preheating stable instrument, zero, working with whiteboard tuned instrument. The sample plate is placed on the instrument measurement sample blue Light whiteness. Take the arithmetic mean of the parallel determination results of the measurement results, the results of parallel determination of the absolute difference is not more than 0.5. A.7 Determination of acid-soluble substance According to GB/T 15343-1994 measured in 5.14.3.2. A.8 Determination of loss on ignition According to GB/T 15343-1994 5.1 was measured. A.9 Determination of loss on drying According to GB/T 15344-1994 5.1 A method of determination. Determination of water-soluble substance A.10 A.10.1 Analysis steps It weighs about 10g sample, accurate to 0.01g, placed in 150mL conical flask, add 50mL water, stirred, and heated to boiling 30min, not Off stirring, ready to add the evaporated water, the volume of the solution was maintained at about 30mL. Cooling to room temperature, transferred to a 50mL volumetric flask Diluted with water to the mark. The following press GB/T 15343-1994 5.15.3.2 from the "dry with a paper filter in compact has dried 100mL Beaker "starts operating (dense filter paper for the slow qualitative filter paper). While retaining the filtrate for pH measurement. A.10.2 Calculation Results With GB/T 15343-1994 in 5.15.4.2. 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 0.015%. A.11 Determination of water-soluble iron According to GB/T 15343-1994 5.16 measured in the test solution is not immediately appear blue through the test. A.12 Determination of pH A.12.1 reagents and materials A.12.1.1 red litmus paper. A.12.1.2 blue litmus paper. A.12.2 Analysis steps A.10.1 reserved filtrate case of litmus paper red and blue litmus paper is not discolored by experiment. A.13 Determination of fineness According to GB/T 15344-1994 5.7 specified in the wet sieve method (A method) were measured. A.14 Determination of Arsenic Weigh 10.00g ± 0.01g sample was placed in 150mL beaker, add 50mL hydrochloric acid solution (1 + 22), shake the sample full points Scattered, covered with a watch glass and placed in a boiling water bath on heating 30min (replenish water to prevent dry out). Remove coolish, at medium speed filter paper 100mL volumetric flask, the beaker was rinsed three times with 30mL of hot water and the insolubles were transferred, filter paper and then washed with 15mL of hot water insolubles. The filtrate was cooled to room temperature, diluted with water to the mark. This solution as the test solution A, for the arsenic content, lead content and heavy metals content Determination. Using a pipette, the solution of 10mL, arsenic measuring device placed in a conical flask, adding 5mL hydrochloric acid, as the test solution. Limits formulated solution. Pipette 3.00mL arsenic standard solution [1 mL solution containing 1.0μg arsenic (As)], the following according to GB/T 5009.76 -2003 Arsenic plaque assay were determined. A.15 Determination of Lead A.15.1 reagents and materials Lead standard solution. 1mL solution containing lead (Pb) 0.10mg. Pipette Pipette 10.00mL lead standard solution according to HG/T 3696.2 prepared, placed in 100mL volumetric flask, dilute to the mark, Shake well. A.15.2 instruments and equipment Atomic absorption spectrophotometer. with lead hollow cathode lamp. A.15.3 Analysis steps A.15.3.1 draw the curve Pipette 0.00mL, 1.00 mL, respectively, 2.00 mL, 3.00mL lead standard solution, placed in four 100mL flask, diluted with water To the mark. On an atomic absorption spectrophotometer, at 283.3nm place, using air - acetylene flame measured absorbance. From each mark Absorbance of standard solution of subtracting the absorbance of the blank solution, the quality of the lead as the horizontal, the vertical axis plotted absorbance curve. A.15.3.2 Determination On an atomic absorption spectrophotometer, at 283.3nm place, using air - acetylene flame measured absorbance A test solution. From work Isolated mass of the test solution of lead on the curve. A.15.4 Calculation Results Lead content of lead (Pb) mass fraction w1 and its value in mg/kg according to formula (A.1) Calculated. 1 10- × = m mw (A.1) Where. m1-- isolated mass of the test solution of lead from the working curve value in milligrams (mg); m - sample mass (A.14) 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 2mg/kg. A.16 Determination of Heavy Metals A tube. in 50mL colorimetric tube, pipette 1.0mL lead standard solution [1 mL solution containing 0.01 mg of lead (Pb)], add water to 25mL. spare. B and C tube tube. pipette for each pipette 10mL test solution A, were placed in two 50mL colorimetric tube, then pipette to C 1.00mL lead standard solution tube moved. spare. Three each colorimetric tube add 1 drop of phenolphthalein indicator solution, adjusting the pH of the solution is neutral with aqueous ammonia solution and adding 5mL pH3.5 acetate Formate buffer solution, and mix. The following press GB/T 5009.74-2003 6.4 was measured. Determination A.17 amphibole asbestos According to GB/T 15344-1994 of 5.6 was measured. --------------- ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB 25578-2010_English be delivered?Answer: Upon your order, we will start to translate GB 25578-2010_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 25578-2010_English with my colleagues?Answer: Yes. 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