GB 25553-2010 English PDFUS$189.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB 25553-2010: The national food safety standards of food additives polyoxyethylene (20) sorbitan monostearate (Tween 60) Status: Valid
Basic dataStandard ID: GB 25553-2010 (GB25553-2010)Description (Translated English): The national food safety standards of food additives polyoxyethylene (20) sorbitan monostearate (Tween 60) Sector / Industry: National Standard Classification of Chinese Standard: X40 Classification of International Standard: 67.220.20 Word Count Estimation: 8,861 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 sorbitan monostearate and ethylene oxide as raw materials, by the addition reaction of a food additive polyoxyethylene (20) sorbitan monostearate (Tween 60). GB 25553-2010: The national food safety standards of food additives polyoxyethylene (20) sorbitan monostearate (Tween 60)---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 polyoxyethylene (20) sorbitan monostearate (Tween 60) National Standards of People's Republic of China National standards for food safety Food Additives Polyoxyethylene (20) Sorbitan alone Stearate (Tween 60) 2010-12-21 release 2011-02-21 Implementation Issued by the Ministry of Health of the People's Republic of China ForewordAppendix A of this standard is a normative appendix. National standards for food safety Food Additives Polyoxyethylene (20) Sorbitan alone Stearate (Tween 60)1 ScopeThis standard applies to sorbitan monostearate and ethylene oxide as raw materials, the addition reaction of the food additive made of polyoxyethylene (20) sorbitan monostearate (Tween 60).2 normative reference documentsThe documents cited in this standard are indispensable for the application of this standard. Any reference to the date of the document, only the date of the edition This applies to this standard. For undated references, the latest edition (including all amendments) applies to this standard.3 technical requirements3.1 sensory requirements. should be consistent with the provisions of Table 1. Table 1 sensory requirements The project requires a test method Color at room temperature for the light yellow Tissue traits at room temperature for the paste Take appropriate laboratory samples in a clean, dry white porcelain dish Natural light, visual observation 3.2 Physical and chemical indicators. should be consistent with the provisions of Table 2. Table 2 Physical and chemical indicators Item Index Test Method Acid value (in KOH)/(mg/g) ≤ 2.0 Appendix A A.4 Saponification value (in KOH)/(mg/g) 45 ~ 55 Appendix A A.5 Hydroxyl value (in KOH)/(mg/g) 81 to 96 Appendix A, A.6 Moisture, w /% ≤ 3.0 Appendix A A.7 Residue on ignition, w /% ≤ 0.25 Appendix A A.8 Arsenic (As)/(mg/kg) ≤ 3 Appendix A A.9 Lead (Pb)/(mg/kg) ≤ 2 Appendix A. A.10 Oxyethylene group (calculated as C2H4O), w /% 65.0 to 69.5 GB/T 7385Appendix A(Normative appendix) Testing method A.1 Warning Some of the test procedures specified in the test method may result in a hazardous situation. Operators should take appropriate safety and protective measures. A.2 General provisions Unless otherwise stated, only the reagents identified as analytical reagents and the tertiary water specified in GB/T 6682-2008 are used in the analysis. Standard titration solution used in the test method, standard solution for the determination of impurities, preparations and articles, in the absence of other requirements, GB/T 601, GB/T 602 and GB/T 603. A.3 Identification test A.3.1 Reagents and materials A.3.1.1 Sodium hydroxide solution. 43 g/L. A.3.1.2 cobalt cobalt thiocyanate solution. 17.4 g of ammonium thiocyanate, 2.8 g of cobalt nitrate, dissolved in water to 100 mL. A.3.1.3 Hydrochloric acid solution. 23 77. A.3.2 Analysis steps A.3.2.1 Take 1 mL of laboratory sample and dissolve in 20 mL of water. Take the solution 10mL, placed in 25mL test tube, add 5mL thiocyanate Cobalt ammonium solution, mix, add 5mL of chloroform, shaking mixed, after standing, the chloroform layer was blue. A.3.2.2 Take 1 mL of laboratory sample and dissolve in 20 mL of water. Take the solution 5mL, placed in 25mL test tube, add 5mL of hydroxide Sodium test solution, boil for a few minutes, cooling, acidified with hydrochloric acid solution, milky white turbidity. A.3.2.3 Take 6mL of laboratory samples, placed in 25mL test tube, add 4mL of water to mix, was jelly. A.4 Determination of acid value A.4.1 Reagents and materials A.4.1.1 isopropanol. A.4.1.2 Toluene. A.4.1.3 sodium hydroxide standard titration solution. c (NaOH) = 0.1mol/L. A.4.1.4 phenolphthalein indicator solution. 10g/L. A.4.2 Analysis steps Weigh about 5g of laboratory samples, accurate to 0.0001g, placed in a conical flask, add isopropyl alcohol and toluene 40mL, heated to dissolve solution. Add 5 drops of phenolphthalein indicator solution, titration with sodium hydroxide titration solution to the solution was pink, keep 30s does not fade for the end. A.4.3 Calculation of results The acid value w1, expressed in potassium hydroxide (KOH), is expressed in milligrams per gram (mg/g) and is calculated according to formula (A.1) w1 = V1cMm1 (A.1) Where. V1 --- sodium hydroxide standard titration solution (A.4.1.3) volume of the value in milliliters (mL); c - the exact value of sodium hydroxide standard titration solution concentration in moles per liter (mol/L); m1 --- the mass of the sample, in grams (g); M - the molar mass of potassium hydroxide in grams per mole (g/mol) [M = 56.109]. The arithmetic mean of the results of two parallel measurements is the result of the report. The absolute difference between the two parallel determinations is not greater than 0.2 mg/g. A.5 Determination of saponification value A.5.1 Reagents and materials A.5.1.1 anhydrous ethanol. A.5.1.2 Potassium hydroxide solution. 40 g/L. A.5.1.3 Standard titration solution for hydrochloric acid. c (HCl) = 0.5 mol/L. A.5.1.4 phenolphthalein indicator solution. 10g/L. A.5.2 Analysis steps Approximately 2.5 g of laboratory samples were weighed to 0.0001 g, placed in a 250 mL Erlenmeyer flask, (25 ± 0.02) mL of hydrogen Potassium ethanol solution, connected to the condenser, placed in a water bath heated reflux 1h, slightly cold with 10mL anhydrous ethanol leaching condenser, remove the cone Bottle, add 5 drops of phenolphthalein indicator solution, titrated with hydrochloric acid standard titration solution to the red just disappeared, heating the test solution to boiling. If there is powder Red, continue to titration to the red disappearance is the end point. At the same time as the measurement, the same amount of the reagent solution was used as a blank test in the same manner as in the measurement. A.5.3 Calculation of results The saponification value w2, expressed as potassium hydroxide (KOH), is expressed in milligrams per gram (mg/g), calculated according to formula (A.2) w2 = (V0-V2) cM m2 (A.2) Where. V2 --- sample consumption of hydrochloric acid standard titration solution (A.5.1.3) volume of the value in milliliters (mL); V0 --- blank test consumption of hydrochloric acid standard titration solution (A.5.1.3) volume of the value in milliliters (mL); c - the exact value of the standard titration solution for hydrochloric acid, in moles per liter (mol/L); m2 --- the mass of the sample, in grams (g); M - the molar mass of potassium hydroxide in grams per mole (g/mol) [M = 56.109]. The arithmetic mean of the results of two parallel measurements is the result of the report. The absolute difference between the two parallel determinations is not greater than 1 mg/g. A.6 Determination of hydroxyl value A.6.1 Reagents and materials A.6.1.1 pyridine. phenolphthalein as indicator, with c (HCl) = 0.1mol/L hydrochloric acid solution and. A.6.1.2 n-butanol. phenol phenol as the indicator, with potassium hydroxide ethanol standard titration solution and. A.6.1.3 Acetylating agent. Acetic anhydride and pyridine were mixed in 1 3 and stored in a brown bottle. A.6.1.4 Potassium hydroxide ethanol standard titration solution. c (KOH) = 0.5mol/L. A.6.1.5 phenolphthalein indicator solution. 10g/L. A.6.2 Analysis steps Approximately 2.2 g of laboratory samples were weighed to 0.0001 g, placed in a 250 mL Erlenmeyer flask, (5 ± 0.02) mL of acetyl Chemical agent, connected to the condenser, placed in a water bath heated to reflux 1h. Add 10 mL of water from the top of the condenser to the conical flask and continue heating After 10 min, cool to room temperature. Rinse the condenser with 15 mL of n-butanol, remove the condenser, and rinse the wall with 10 mL of n-butanol. plus Into the 8 drops of phenolphthalein indicator solution, titration with potassium hydroxide ethanol titration solution to the solution was pink is the end point. At the same time as the measurement, the same amount of the reagent solution was used as a blank test in the same manner as in the measurement. To calibrate the free acid, weigh about 10g of laboratory samples, accurate to 0.01g. Placed in a conical flask, add 30 mL of pyridine, add 5 drops of phenolphthalein indicator solution, titration with potassium hydroxide ethanol titration solution to the solution was pink. A.6.3 Calculation of results Hydroxyl value of w3, potassium hydroxide (KOH), the value in milligrams per gram (mg/g), according to formula (A.3). w3 = (V0-V3) cM m3 V4cM m0 (A.3) Where. V3 --- sample consumption of potassium hydroxide ethanol standard titration solution (A.6.1.4) volume of the value in milliliters (mL); V0 --- blank test consumption of potassium hydroxide ethanol standard titration solution (A.6.1.4) volume of the value in milliliters (mL); V4 --- corrected free acid consumption of potassium hydroxide ethanol standard titration solution (A.6.1.4) volume of the value in milliliters (mL); c - potassium hydroxide ethanol standard titration solution concentration of the exact value in moles per liter (mol/L); m3 --- value of the value of the test value of the value of gold, the unit is grams (g); m0 --- corrected free acid determination of the quality of the sample value, the unit is grams (g); M - the molar mass of potassium hydroxide in grams per mole (g/mol) [M = 56.109]. The arithmetic mean of the results of two parallel measurements is the result of the report. The absolute difference between the two parallel determinations is not more than 2 mg/g. A.7 Determination of Moisture Weigh about 0.6g of laboratory samples, accurate to 0.0002g, placed in 25mL beaker, add a small amount of chloroform, dissolved and dissolved Transfer to a 25 mL volumetric flask, rinse the beaker several times with chloroform, and transfer it to the volumetric flask and dilute it to the mark. Measure 5mL ± 0.02mL The sample solution, according to GB/T 6283 direct charge method. The arithmetic mean of the results of two parallel measurements is the result of the report. The absolute difference between the two parallel determinations is not more than 0.05%. A.8 Determination of burning residue According to GB/T 7531. The burning temperature is 850 ° C ± 25 ° C. A.9 Determination of arsenic According to GB/T 5009.76 arsenic spot method. The samples were treated by "wet digestion" and 10 mL ± 0.02 mL of sample solution was measured at the time of measurement (Equivalent to 1.0g of laboratory samples). Preparation of limited standard solution. Remove 3 mL ± 0.02 mL of arsenic (As) standard solution (phase When 3 μgAs), the same treatment with the sample at the same time. A.10 Determination of lead A.10.1 Colorimetric method (Arbitration law) According to GB/T 5009.75. Sample treatment. Weigh about 2.5g of laboratory samples, accurate to 0.0001g, placed in 50mL crucible In the crucible, carbonized at a low temperature and then ashed at 500 ° C to 550 ° C. After cooling, 5 mL of nitric acid solution (1 1) was added and stirred to dissolve Solution, add 10mL of water transferred to the 25mL volumetric flask, diluted with water to the mark, shake. A.10.2 Atomic Absorption Spectrometry According to GB 5009.12. According to GB/T 5009.75 "dry digestion" treatment samples. 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