GB 25573-2010 English PDF

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GB 25573-2010: The national food safety standards of food additives calcium peroxide
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Basic data

Standard ID: GB 25573-2010 (GB25573-2010)
Description (Translated English): The national food safety standards of food additives calcium peroxide
Sector / Industry: National Standard
Classification of Chinese Standard: X42
Classification of International Standard: 67.220.20
Word Count Estimation: 10,164
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 calcium chloride, hydrogen peroxide, nitrogen or hydrogen as raw water contains calcium, over the right to hydrogen as raw food additive calcium peroxide.

GB 25573-2010: The national food safety standards of food additives calcium peroxide

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The national food safety standards of food additives calcium peroxide National Food Safety Standard Food Additives Calcium Peroxide 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

Foreword

Appendix A of this standard is a normative appendix. National Food Safety Standard Food Additives Calcium Peroxide

1 Scope

This standard applies to calcium chloride, hydrogen peroxide and ammonia as raw material or calcium hydroxide, hydrogen peroxide as raw materials to produce food additives Calcium peroxide.

2 Normative references

The 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 formula and relative molecular mass

Formula 3.1 CaO2 3.2 relative molecular mass 72.08 (according to 2007 international relative atomic mass) 4. Technical Requirements 4.1 Sensory requirements. comply with Table 1. Table 1 Sensory requirements Project requires test methods Pale yellow color take appropriate sample is placed in 50mL beaker was observed under natural light color Chak and texture. State organization crystalline powder 4.2 Physical indicators. to comply with Table 2. Table 2. Physical and chemical indicators Item Index Test Method Active oxygen (O), w /% ≥ 16.6 Appendix A A.4 Water, w /% ≤ 2.0 A.5 in Appendix A pH (10g/L in water) 11 - 13 in Appendix A A.6 Heavy metals (Pb)/(mg/kg) ≤ 10 Appendix A A.7 Lead (Pb)/(mg/kg) ≤ 4 Appendix A A.8 Arsenic (As)/(mg/kg) ≤ 3 A.9 in Appendix A Fluorides (as F)/(mg/kg) ≤ 50 Appendix A A.10

Appendix A

(Normative) Testing method A.1 Warning Reagents The standard test methods used for toxic or corrosive, be careful when operating! As should be immediately splashed on the skin Rinsed with water, severe cases should be treated immediately. When using the virulent, should be strictly in accordance with the relevant provisions of the management; and should be used to avoid inhalation or skin Contacts, if necessary in a fume hood. Exposed parts of the wound can not touch people. 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. Used in the test 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 Reagents and materials A.3.1.1 hydrochloric acid solution. 12. A.3.1.2 ammonia solution. 13. A.3.1.3 ammonium acetate solution. 35 g/L. A.3.1.4 phenolphthalein indicator solution. 10 g/L. A.3.2 Analysis step A.3.2.1 little sample taken after the hydrochloric acid solution to dissolve, 2 drops of ~ 3 drops of phenolphthalein indicator solution, the solution was adjusted to neutral with ammonia, acetic acid I.e., a white precipitate hydroxide solution, the precipitate can be dissolved in a hydrochloric acid solution, and insoluble in glacial acetic acid. A.3.2.2 moistened with hydrochloric acid calcium salt solution, resulting in a temporary reddish to dark red. A.4 Determination of reactive oxygen species A.4.1 Method summary Under acidic conditions, hydrogen peroxide and potassium permanganate oxidation-reduction reaction, according to the consumption of potassium permanganate standard titration solution, indeed The active oxygen content constant. A.4.2 Reagents and materials A.4.2.1 phosphoric acid. 1 + 3. A.4.2.2 sulfuric acid solution. 1 + 3. A.4.2.3 standard potassium permanganate titration solution. c (1/5KMnO4) = 0.1 mol/L. A.4.3 Analysis step Adding about Weigh about 0.2 g samples, accurate to 0.000 2 g, placed in a phosphoric acid solution containing 25mL Erlenmeyer flask to be dissolved after the sample 25 mL of sulfuric acid solution was titrated with potassium permanganate standard solution titration until the solution was pink, and does not disappear shall end within 30 s. Simultaneously Line blank test. In addition to the blank test without the sample, the addition of reagents and other operations of the kind and amount (other than the standard titration solution) with the same Test. A.4.4 Calculation Results The active oxygen content by mass of oxygen (O) fraction w1 and its value is expressed in%, according to formula (A.1) Calculated. [] 1000) 0 1 × - = m cMVV ((A.1) Where. Numerical potassium permanganate titration V-- standard titration solution consumed by the solution volume in milliliters (mL); Numerical standard potassium permanganate titration V0-- blank test solution consumed volume in milliliters (mL); Accurate c-- potassium permanganate standard titration solution concentration value in units of moles per liter (mol/L); m-- sample mass value in grams (g); Numerical M-- oxygen (1/2 O) molar mass of the units of grams per mole (g/mol) (M = 7.999). 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 0.2%. A.5 Determination of Moisture A.5.1 Instruments and Equipment A.5.1.1 weighing bottle. Φ25 mm × 40 mm. A.5.1.2 electric oven. the temperature can be controlled at 118 ℃ ± 2 ℃. A.5.2 Analysis step It was used at 118 ℃ ± 2 ℃ dried to constant mass weighing bottle, weigh approximately 1 g samples, accurate to 0.000 2 g, placed in 118 ℃ ± 2 ℃ electric oven placed 2 h, the weighing bottle is placed after the dryer to cool to room temperature and weigh. And measuring the reactive oxygen-containing dried the amount. (Analysis methods and results calculated according to the provisions A.4 Determination of active oxygen content after drying to w2 dollars.) A.5.3 Calculation Results Moisture mass fraction w3 and its value is expressed in%, according to formula (A.2) Calculated. ) (213 132 3 ×× - × - = m wmmwmmm ) - ((A.2) Where. Numerical m1-- weighing bottle mass in grams (g); Numerical m2-- dried before weighing bottle and sample mass, in grams (g); M3-- value after drying the sample and weighing bottle mass in grams (g); m-- sample mass value in grams (g); w1-- by active oxygen content A.4 measured in%; w2-- drying 2 h the rear was active oxygen content, expressed as a percentage. 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 0.2%. A.6 pH measurement of A.6.1 Reagents and materials Carbon dioxide-free water. A.6.2 Instruments and Equipment pH meter. Indexing is 0.02. A.6.3 Analysis step Weigh 1.00 g ± 0.01 g sample was placed in a 150 mL beaker, add about 25 ℃ in 100 mL of carbon dioxide-free water until the sample solution Once extracted, according to the provisions of GB/T 9724-2007 were measured. A.7 Determination of Heavy Metals A.7.1 Reagents and materials A.7.1.1 nitrate solution. 1 + 1. A.7.1.2 ammonia solution. 1 + 1. A.7.1.3 acetic acid - sodium acetate buffer solution. pH≈3. A.7.1.4 sodium sulfide solution. This solution should be shading, stamped sealed in a brown bottle. Effective within three months after preparation. A preparation method. Weigh sodium sulfide 5g, was dissolved in a mixed solution of 10mL of water and 30mL of glycerol. Preparation method II. Weigh sodium 5g, was dissolved in a mixed solution of 30mL of water and 90mL of glycerol. Half the volume of the solution While cooling hydrogen sulfide gas to make it saturated, then the remaining half is added and mixed. A.7.1.5 Lead standard solution. 1 mL solution containing lead (Pb) 0.010 mg. Pipette 1.00 mL of lead standard solution according to HG/T 3696.2 requirements formulated and placed in 100 mL volumetric flask, dilute with water to the mark, Shake well. The solution is using now. A.7.2 Analysis step Weigh 1.00 g ± 0.01 g sample was placed in 100 mL beaker. Was added 10 mL of water, 8 mL nitric acid solution until the sample is completely dissolved, Cover the surface of the dish, the sample was heated on a hotplate to near dryness. After cooling, a small amount of water to the residue was dissolved, the solution was filtered to a 50 mL test cuvette , The pH adjusted with aqueous ammonia solution was 3-4 (pH paper with test). Add 5 mL of acetic acid - sodium acetate buffer solution, was added dropwise 2 drops of sulfide Soda solution, diluted with water to the mark. Dark place for 5 min, was observed in the white background, the color may not be deeper than the standard colorimetric solution liquid. Pipette 1.00 mL of lead standard solution standard colorimetric solution, placed in 50 mL colorimetric tube from the "added 5 mL of acetic acid - sodium acetate buffer solution Liquid, "starting with the test solution at the same time the same treatment. A.8 Determination of Lead A.8.1 dithizone colorimetry (Arbitration Act) A.8.1.1 Reagents and materials A.8.1.1.1 nitrate solution. 1 + 1. A.8.1.1.2 other agents with GB/T Chapter 3 of 5009.75─2003. A.8.1.2 instruments and equipment With GB/T 5009.75─2003 Chapter 4. A.8.1.3 analysis step Weigh 2.50 g ± 0.01 g sample was placed in 100mL beaker, add 20 mL of water and 8 mL nitric acid solution, heated to boiling, boil 5 min sample is completely decomposed (no bubbles) cooled, placed in a separatory funnel. Pipette Pipette 1.00 mL of lead standard solution, placed in a separatory funnel, as a standard solution of the following according to GB/T 5009.75─2003 Chapter 6 of the measurement. A.8.2 Atomic absorption spectrophotometry A.8.2.1 Method summary The sample was dissolved, wherein the lead after treatment complexation and extraction with Pyrrolidine dithiocarbamate (The APDC), atomic absorption Import Spectrophotometer, after the measurement of the atomic absorbance at 283.3 nm was relatively limited with the lead standard. A.8.2.2 Reagents and materials A.8.2.2.1 hydrochloric acid. A.8.2.2.2 chloroform. A.8.2.2.3 nitrate. A.8.2.2.4 sodium hydroxide solution. 250 g/L. A.8.2.2.5 Pyrrolidine dithiocarbamate (The APDC) solution. 2%. Weigh 2 g Pyrrolidine dithiocarbamate (The APDC) was dissolved in 100 mL of water. If insoluble material filtered before use. A.8.2.2.6 Lead standard solution. 1 mL solution containing lead (Pb) 0.010 mg. Pipette 1.00 mL of lead standard solution according to HG/T 3696.2 requirements formulated and placed in 100 mL volumetric flask, dilute to the mark, shake. The solution is using now. A.8.2.2.7 precision pH test paper. pH0.5 ~ 5.0. A.8.2.2.8 two water. in line with GB/T 6682-2008. A.8.2.3 instruments and equipment A.8.2.3.1 separating funnel. 250 mL. A.8.2.3.2 atomic absorption spectrophotometer. A.8.2.4 measuring step A.8.2.4.1 Determination of lead standard preparation and assay solutions Accurate Pipette 4 .00mL lead standard solution was added to 150 mL beaker, add 30 mL of water, 10 mL of hydrochloric acid, cover the pan heating surface To a boil, and boil 5 min. Cooling, the solution was adjusted with a sodium hydroxide solution of pH 1.0 to 1.5 (pH paper with a precision test). The solution Transferred to a separatory funnel, diluted with water to approximately 200 mL. Added 2 mL of pyrrolidine dithio carbamate (APDC) solution, shake. Chloroform extracted twice, each added 20 mL, the extract (ie, organic phase) was collected in a 50 mL beaker with water in a fume hood Bath was heated and evaporated to dryness. 3 mL of nitric acid was added to the residue and heated nearly dry. Was added 0.5 mL of nitric acid and 10 mL of water and heated to the remaining liquid Has a volume of 3 mL ~ 5 mL, transferred to 10 mL volumetric flask, dilute to the mark with water. Selection of air - acetylene flame at 283.3 nm wavelength At zero water, measuring the absorbance of the solution. Preparation and determination of sample measurement solutions A.8.2.4.2 Weigh 10.0 g ± 0.1 g sample is placed in a 150 mL beaker, add 30 mL of water, 10 mL of hydrochloric acid, cover the pan heating surface The sample was dissolved, and boil 5 min. A.8.2.4.1 then press the "cooling, the solution was adjusted with a sodium hydroxide solution of pH 1.0 to 1.5" to "test The absorbance of the solution set "operation, the corresponding measured absorbance. A.8.2.5 results found Determination of the sample solution is not greater than the absorbance of lead standard measuring the absorbance of the solution. A.9 Determination of Arsenic A.9.1 Reagents and materials A.9.1.1 nitrate solution. 1 + 1. A.9.1.2 arsenic standard solution. 1 mL solution containing arsenic (As) 0.001mg. Pipette 1.00 mL of arsenic standard solution according to HG/T 3696.2 requirements formulated and placed in 1000 mL volumetric flask, dilute with water to the mark, Shake well. The solution is using now. A.9.1.3 other agents with GB/T 5009.76-2003 of Chapter 9. A.9.2 Instruments and Equipment With GB/T 5009.76-2003 Chapter 10. A.9.3 Analysis step Weigh 1.00 g ± 0.01 g sample was placed in 100 mL beaker, add 20 mL of water and 8 mL nitric acid solution, heated to boiling, boil 5 min sample is completely decomposed (no bubbles) After cooling, all transferred to a given arsenic bottle. Limited have formulated standard solution. Pipette Pipette 3.00 mL of arsenic standard solution, given arsenic placed in the bottle, the following according to GB/T 5009.76- 2003, Chapter 11 was measured. Determination of fluoride A.10 A.10.1 reagents and materials A.10.1.1 hydrochloric acid solution. 14. A.10.1.2 total ionic strength buffer. sodium acetate solution was mixed with an equal amount of sodium citrate solution, and the solution using now. A.10.1.3 sodium acetate solution. c (CH3COONa · 3H2O) = 3 mol/L. Weigh 204 g of sodium acetate dissolved in about 300 mL of water, cooled, 1 mol/L acetic acid adjusted pH≈7.0, all transferred to 500 mL Volumetric flask and diluted with water to the mark. A.10.1.4 sodium citrate solution. c (Na3C6H5O7 · 2H2O) = 0.75 mol/L. Weigh 110 g of sodium citrate, dissolved in about 300 mL of water, heightening acid 14 mL, all transferred to 500 mL volumetric flask, dilute with water Release to the mark. A.10.1.5 fluoride standard solution. 1 mL solution of fluorine (F) 0.010 mg. Pipette 1.00 mL of fluoride standard solution according to HG/T 3696.2 requirements formulated and placed in 100 mL volumetric flask, dilute to the mark with water Degree, shake. Store in a polyethylene bottle, and the solution using now. A.10.2 instruments and equipment A.10.2.1 fluorine electrode. A.10.2.2 calomel electrode. A.10.2.3 potentiometer. A.10.2.4 magnetic stirrer. A.10.3 Analysis steps A.10.3.1 formulated fluoro standard working solution Pipette fluoride standard solution 1.00 mL, 2.00 mL, 3.00 mL, 4.00 mL, 5.00 mL were placed in five 50 mL volumetric flask , Each of the hydrochloric acid solution was added 4 mL, add 25 mL of total ionic strength buffer, diluted with water to the mark. A.10.3.2 prepared test solution Weigh about 1.5 g samples, accurate to 0.01 g, was added 4 mL of hydrochloric acid solution, 25 mL of total ionic strength buffer, dissolved in 100 mL volumetric flask, dilute to the mark, shake. A.10.3.3 Determination The fluoride ion selective electrode and calomel electrode and the potentiometer negative and a positive terminal coupled to the electrode insert filled with water 50 mL polyethylene plastic beaker, Preheat the instrument, on a magnetic stirrer with constant stirring, to read the value of the equilibrium potential, the replacement of water soaking the electrode to electrode specified in the instructions After the potential value to the standard working solution and the potential of the sample solution was measured. Equilibrium potential fluoro standard working solution were measured from low to high concentrations. Electrode potentials as ordinate, the fluorine ion concentration (mg/mL) As abscissa, the curve on semi-logarithmic graph paper. The same method the equilibrium potential of the sample solution, sample the fluoride ion concentration (mg/mL), isolated from the working curve. A.10.4 Calculation Results Fluoride content of fluorine (F) mass fraction w4 and its value to (mg/kg) according to formula (A.3) Calculated. - × × = cw (A.3) Where. C-- value from the working curve Richard fluoride ion concentration, in milligrams per milliliter (mg/mL); m - value the quality of the sample, 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 10 mg/kg. ......

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