GB 1897-2008 English PDFUS$599.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB 1897-2008: Food additive -- Hydrochloric acid Status: Obsolete GB 1897: Historical versions
Basic dataStandard ID: GB 1897-2008 (GB1897-2008)Description (Translated English): Food additive -- Hydrochloric acid Sector / Industry: National Standard Classification of Chinese Standard: X42 Classification of International Standard: 67.220.20 Word Count Estimation: 15,187 Date of Issue: 2008-06-25 Date of Implementation: 2009-01-01 Older Standard (superseded by this standard): GB 1897-1995 Quoted Standard: GB 190-1990; GB/T 191-2008; GB/T 601-2002; GB/T 602-2002; GB/T 603-2002; GB 2760-1996; GB/T 6678-2003; GB/T 6682-2003; GB/T 6682-2008 Adopted Standard: FCC (V)-2004, NEQ Regulation (derived from): Announcement of Newly Approved National Standards No. 12 of 2008 (No. 125 overall) Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China Summary: This Chinese standard specifies the requirements for food additives, hydrochloric acid, test methods, inspection rules and signs, labels, packaging, transport and storage. This standard applies to chlorine and hydrogen absorption by the water obtained synthetic food additives hydrochloric acid. The product is used in food processing as acidity regulator and the food industry processing aids. GB 1897-2008: Food additive -- Hydrochloric acid---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.Food additive.Hydrochloric acid ICS 67.220.20 X42 National Standards of People's Republic of China Replacing GB 1897-1995 Food additives hydrochloride Posted 2008-06-25 2009-01-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released ForewordThe standard Chapter 4 and Chapter 7 are mandatory, others are recommended. This standard and the United States "Food Chemicals Codex with the" fifth edition [FCC (V).2004] degree of consistency "hydrochloric acid" is not equivalent. This standard replaces GB 1897-1995 "food additive hydrochloric acid." This standard and GB 1897-1995 main technical differences compared as follows. --- Technical indicators improve iron (3.2 the previous version, this version 4.2); --- Residue on ignition canceled projects, increase non-volatile items (before version 3.2, this version 4.2); --- Cancel the determination of residue on ignition method to increase the non-volatile matter measuring method (before version 4.7, this version 5.10); --- Increased under special circumstances and the type test cycle should type inspection requirements (edition 6.2). The standard proposed by China Petroleum and Chemical Industry Association. This standard by the National Standardization Technical Committee of the inorganic chemistry branch (SAC/TC63/SC1) and the National Food Additives Standardization Committee (SAC/TC11) centralized. This standard was drafted. Hangzhou Electrochemical Group Co., Jinxi Chemical Industry Research Institute, Yunnan Salt & Chemical Co., Ltd., Haohua Yuhang Chemical Co., Ltd., Tianjin Dagu Chemical Co., Ltd., Shanghai Chlor-Alkali Chemical Co., Ltd., Qingdao Haijing Chemical Group Co., Ltd. The main drafters of this standard. Chenpei Yun, Jiangyue Fang, Li Furong, Wu Rong right, Liu Zhiqiang, Chen Shao copper, Caojian Fang, Zhang Yingmin. This standard was first released in 1986, 1995 and the first amendment. Food additives hydrochloride Warning --- hydrochloric acid is highly corrosive, the operator should take appropriate safety and health measures, the contact should wear protective glasses, acid-hand Sets and other protective equipment.1 ScopeThis standard specifies the requirements for food additives hydrochloric acid, test methods, inspection rules and signs, labels, packaging, transport and storage. This standard applies to the synthesis of chlorine and hydrogen by the water absorption obtained food additive hydrochloric acid. The product as acidity regulator in food processing Agents and food processing industry with aids.2 Normative referencesThe following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Study whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB 190-1990 dangerous goods packaging logo GB/T 191-2008 Packaging Storage icon flag (ISO 780.1997, MOD) Preparation of GB/T 601-2002 Chemical Reagent standard titration solution GB/T 602-2002 Chemical Reagent Determination of impurities in the preparation of standard solution used GB/T 603-2002 Chemical Reagent Test Methods - Preparations with GB 2760-1996 Hygienic standards for uses of food additives GB/T 6678-2003 General rules for sampling chemical products GB/T 6680-2003 General rules for sampling liquid chemical products GB/T 6682-2008 analytical laboratory use specifications and test methods (ISO 3696. 1987, MOD)3 formula and relative molecular massMolecular formula. HCl Molecular Weight. 36.46 (according to 2007 international relative atomic mass)4 Requirements4.1 Appearance. colorless or light yellow transparent liquid. 4.2 Food additives shall comply with the requirements of Table 1 hydrochloric acid. Table 1 requires% Item Index Total acidity (based on HCl), ≥ 31.0 Iron (as Fe), ≤ 0.0005 Sulfate (SO2-4 dollars), ≤ 0.007 Free chlorine (Cl to count), ≤ 0.003 Reducing substances (in terms SO3), ≤ 0.007 Non-volatile matter, ≤ 0.05 Heavy Metals (as Pb), ≤ 0.0005 Arsenic (As), ≤ 0.00015 Test methods5.1 Safety Tips This test method Reagents toxic or corrosive, be careful when operating! As splashed on the skin should immediately wash with water, Yan In severe cases should be treated immediately. 5.2 General Provisions This standard reagents and water, did not indicate when the other requirements, refer to three analytical reagent and GB/T 6682-2008 specified water. Used in the test standard titration solution, impurity standard solution, preparations and products, did not indicate when the other requirements, according to GB/T 601- 2002, GB/T 602-2002, regulations preparation GB/T 603-2002 in. 5.3 Identification 5.3.1 Reagents and solutions 5.3.1.1 silver nitrate solution. 2g/L. 5.3.1.2 ammonia solution. 2 + 3. 5.3.1.3 methyl orange indicator solution. 1g/L. 5.3.2 Identification Methods 5.3.2.1 1mL weighed sample in 50mL water, was added dropwise a solution of silver nitrate, i.e., a white milky precipitate. It can be dissolved in ammonia solution, Insoluble in nitric acid. 5.3.2.2 amount of 1mL sample in 100mL of water, add 2 drops of methyl orange solution, the solution turns red, the aqueous solution is strongly acidic. 5.3.3 Identification Conclusion More than two tests give a positive response, it can determine if this sample is hydrochloric acid. 5.4 Appearance In natural light visually observed. 5.5 Determination of total acidity 5.5.1 Principle of the method The sample solution is bromocresol green indicator solution, titration with sodium hydroxide standard solution titration solution from yellow to blue as the end point. anti- Should the formula. H ++ OH → - H2O 5.5.2 Reagents and solutions 5.5.2.1 sodium hydroxide standard titration solution. Ba (NaOH) = 1mol/L. 5.5.2.2 bromocresol green indicator solution. 1g/L. 5.5.3 Instruments General laboratory equipment and the following container. 5.5.3.1 Erlenmeyer flask, 100mL (with ground glass stopper). 5.5.3.2 Buret, 50mL, A-level, there is 0.1mL division value. 5.5.4 Analysis of step 5.5.4.1 Sample Weighed about 3mL sample and put the contents of about 15mL of water and has weighed (accurate to 0.0001g) Erlenmeyer flask, mix and weighed (fine Accurate to 0.0001g). 5.5.4.2 Determination To add the Samples (2-3) drops of bromocresol green indicator solution, titration with sodium hydroxide standard titration solution until the solution changed from yellow to blue end. 5.5.5 Calculation Results The total acidity of hydrogen chloride (HCl) mass fraction of 1 meter, expressed in%, according to equation (1). 1 = (Vp/1000) Ba M (1) Where. Accurate Ba --- sodium hydroxide standard titration solution concentration value in units of moles per liter (mol/L); Numerical sodium hydroxide standard titration Vp --- titration solution consumed volume in milliliters (mL); Numerical --- the M hydrogen chloride (HCl) molar mass in grams per mole (g/mol) (M = 36.46). 5.5.6 allowable difference 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 0.2%. 5.6 Determination of iron content - 1,10-phenanthrene spectrophotometry method 5.6.1 Principle of the method Hydroxylamine with hydrochloric acid in a sample Fe3 + is reduced to Fe2 +, at pH 4.5 buffer solution system, Fe2 + and 1,10-phenanthrene morpholino reaction product Into the orange-red complex, the absorbance was measured using a spectrophotometer. Reaction is as follows. 4Fe3 ++ 2NH2 → OH 4Fe2 ++ N2O + 4H ++ H2O Fe2 ++ 3C12H8N → 2 [Fe (C12H8N2) 3] 2+ 5.6.2 Reagents and solutions 5.6.2.1 hydrochloric acid solution. 1 + 10. 5.6.2.2 ammonia solution. 1 + 1. 5.6.2.3 hydroxylamine hydrochloride solution. 100g/L. Weigh 10.0g of hydroxylamine hydrochloride, dissolved in water and diluted with water to 100mL. 5.6.2.4 acetic acid - sodium acetate buffer solution. pH≈4.5. 5.6.2.5 Iron standard solution. 1mL solution containing iron (Fe) 0.1mg. Weigh 0.864g of ammonium ferric sulfate [NH4Fe (SO4) 2 · 12H2O], dissolved in water, add 10mL sulfuric acid solution (25%), moved 1000mL volumetric flask, dilute to the mark. 5.6.2.6 Iron standard solution. 1mL solution containing iron (Fe) 0.01mg. Using a pipette, said iron standard solution of 10mL placed in 100mL flask, diluted with water to the mark. The solution now With the existing service. 5.6.2.7 1,10- Philippines morpholino solution. 2g/L. The solution should be stored in the dark, using only colorless solution. 5.6.3 Instruments General laboratory equipment and a spectrophotometer. 5.6.4 Analysis of step 5.6.4.1 Standard curve drawing 5.6.4.1.1 Table 2. The amount of iron standard solution (5.6.2.6) were placed six 50mL volumetric flask. Table 2 Iron standard solution volume/mL corresponding iron mass/μg 00 2.0 20 4.0 40 6.0 60 8.0 80 10.0 100 5.6.4.1.2 To each flask was added 10mL of hydrochloric acid solution, add water to approximately 20mL, with aqueous ammonia solution is adjusted to pH 2-3, Followed by hydroxylamine hydrochloride solution is added 1mL, 5mL of acetic acid - sodium acetate buffer solution and diluted 2mL1,10- Philippines morpholino solution with water to Mark and shake. Stand for 15min. 5.6.4.1.3 with a suitable cuvette, at a wavelength of 510nm at zero spectrophotometer with the blank solution adjustment, assay solution absorbance. 5.6.4.1.4 iron content (μg) as abscissa and the corresponding absorbance for the vertical axis of the standard curve or calculate a linear regression equation. 5.6.4.2 Preparation of sample solution Weighed about 8.6mL sample weighed (accurate to 0.01g), placed in a built about 50mL water 100mL flask, diluted with water to Mark and shake. 5.6.4.3 Sample Amount of 10.0mL sample solution was placed in 50mL volumetric flask. 5.6.4.4 blank test Without the sample, add 10.0mL hydrochloric acid solution, using the same sample and determination of the analytical procedure, and the amount of reagent blank test. 5.6.4.5 Determination 5.6.4.5.1 Water was added to the test samples to about 20mL, with aqueous ammonia solution is adjusted to pH 2-3, and then add 1mL hydroxylamine hydrochloride solution, 5mL of acetic acid - sodium acetate buffer solution and 2mL1,10- Philippines morpholino solution was diluted with water to the mark. Stand for 15min. 5.6.4.5.2 with a suitable cuvette, at a wavelength of 510nm at zero spectrophotometer with the blank solution adjustment, assay solution absorbance. 5.6.5 Calculation Results Iron content of iron (Fe) mass fraction 2 and its value is expressed in%, according to equation (2). -6 -3 (2) Where. 5.6.6 allowable difference Take the arithmetic mean of the parallel determination results to report results. The absolute value of the difference between the results of parallel determination of not more than 0.0001%. 5.7 Determination of sulphate content 5.7.1 Principle of the method The sample was evaporated to dryness, the residue was dissolved in hydrochloric acid, glycerol - ethanol mixture as stabilizer, barium chloride is added to obtain a suspension, with Spectrophotometer suspension absorbance. 5.7.2 Reagents and solutions 5.7.2.1 dihydrate barium chloride (BaCl2 · 2H2O). 5.7.2.2 Glycerol - Ethanol mixture. 1 + 2. 5.7.2.3 hydrochloric acid solution. 1mol/L. 5.7.2.4 sulfate standard solution. 0.1g/L. There are two preparation methods, choose one. (1) Weigh 0.148g at (105 ~ 110) ℃ dried to a constant mass of anhydrous sodium sulfate, dissolved in water and transferred to 1000mL volumetric flask And diluted to the mark. (2) Weigh 0.181g at (105 ~ 110) ℃ dried to a constant mass of potassium sulfate, dissolved in water and transferred to 1000mL volumetric flask, Dilute to the mark. 5.7.3 Instruments General laboratory equipment and a spectrophotometer. 5.7.4 Analysis of step 5.7.4.1 Standard curve drawing 5.7.4.1.1 in Table 3 were weighed sulfate standard solution into seven 50mL volumetric flask. Table 3 Sulfate standard solution/mL corresponding sulfates quality/mg 00 2.5 0.25 5.0 0.50 7.5 0.75 10.0 1.00 15.0 1.50 20.0 2.00 5.7.4.1.2 3mL hydrochloric acid solution were added to 5mL and glycerin to each flask - ethanol mixture, diluted with water to the mark, Shake well. 5.7.4.1.3 solution into the flask containing 0.3g of barium chloride dihydrate dry beaker, two revolutions per second speed swing 2min. At room temperature, allowed to stand 10min. 5.7.4.1.4 with a suitable cuvette, at a wavelength of 450nm at zero spectrophotometer with the blank solution adjustment, assay solution absorbance. 5.7.4.1.5 sulphate content (mg) as abscissa and ordinate corresponding to the absorbance of the standard curve or calculate the linear regression equation. 5.7.4.2 Sample Weigh about 20g sample (accurate to 0.01g), place the evaporating dish and evaporated to dryness on a steam bath, cooled to room temperature, the salt was added 3mL Acid solution to dissolve the residue, all transferred to 50mL volumetric flask, add 5mL glycerol - ethanol mixture was diluted with water to the mark. 5.7.4.3 blank test Without the sample, the sample was measured using the same analytical procedure, and the amount of reagent blank test. 5.7.4.4 Determination 5.7.4.4.1 The sample was carefully transferred containing 0.3g of barium chloride dihydrate dry beaker, two revolutions per second speed of shaking 2min. in At room temperature, allowed to stand 10min. 5.7.4.4.2 with a suitable cuvette, at a wavelength of 450nm at the blank solution adjusting spectrophotometer zero absorbance assay solution. 5.7.5 Calculation Results Sulfate content of sulfate (SO2-4) mass fraction 3 and its value is expressed in%, according to equation (3) Calculated. -3 (3) Where. 5.7.6 allowable difference Take the arithmetic mean of the parallel determination results to report results. The absolute value of the difference between the results of parallel determination of not more than 0.001%. 5.8 Determination of free chlorine content 5.8.1 Principle of the method Sample solution was added potassium iodide solution, precipitation iodine starch as indicator solution, titration with sodium thiosulfate standard solution titrate the liberated iodine. Reaction is as follows. 2I- → -2e I2 I2 + 2S2O32 → - S4O2-6 + 2I- 5.8.2 Reagents and solutions 5.8.2.1 hydrochloric acid. Oxide or reducing substance contained hydrochloric acid should be less than 0.0002%. 5.8.2.2 KI solution. 150g/L. Weigh 15.0g of potassium iodide, dissolved in water and diluted with water to 100mL. 5.8.2.3 sodium thiosulfate standard titration solution. Ba (Na2S2O3) = 0.1mol/L. 5.8.2.4 Starch indicator solution. 10g/L. The solution can only be retained for two weeks. 5.8.3 Instruments And general laboratory equipment and the following instruments. 5.8.3.1 Erlenmeyer flask, 500mL (with ground glass stopper). 5.8.3.2 microburette. 5.8.4 Analysis of step 5.8.4.1 Sample Weighed approximately 50mL sample and put the contents of about 100mL of water and has weighed (accurate to 0.01g) Erlenmeyer flask was cooled to room temperature, said The amount of (accurate to 0.01g). 5.8.4.2 blank test Without specimen, with an equal amount of hydrochloric acid in place of the sample, the sample was measured using the same analytical procedure, reagents and amount of Blank test. 5.8.4.3 Determination The test compound added 7mL potassium iodide solution, plugged cork shaken in the dark standing 2min. Add starch indicator solution 1mL with thiosulfate Sodium standard solution titration solution titration to the blue disappeared as the end point. 5.8.5 Calculation Results Free chlorine to the quality of chlorine (Cl) 4 scores count, values expressed in%, according to equation (4) calculations. 4 = [(1- Vp V0)/1000] Ba M 100 = (Vp 1- V0) Ba M (4) Where. Accurate Ba --- sodium thiosulfate standard titration solution concentration value in units of moles per liter (mol/L); Value V0 --- sodium thiosulfate standard titration solution consumed blank titration volume in milliliters (mL); Numerical sodium thiosulfate standard titration Vp 1 --- sample titration solution consumed volume in milliliters (mL); --- The M value chlorine (Cl) molar mass of the units of grams per mole (g/mol) (M = 35.45). 5.8.6 allowable difference Take the arithmetic mean of the parallel determination results to report results. The absolute value of the difference between the results of parallel determination of not more than 0.001%. 5.9 Determination of reducing matter content 5.9.1 Principle of the method In acidic medium, the single case of iodine starch indicator was blue, in case of reducing substances is reduced to elemental iodine solution color lighter or disappear. 5.9.2 Reagents and solutions 5.9.2.1 hydrochloric acid. 5.9.2.2 KI solution. 10g/L. 5.9.2.3 iodine standard solution. Ba 12I () 2 = 0.001mol/L; Amount of 1mL iodine standard solution according to GB/T 601-2002 prepared, placed in 100mL volumetric flask, dilute to the mark. That Solution was prepared prior to use. 5.9.2.4 Starch indicator solution. 10g/L. 5.9.3 Instruments General laboratory equipment. 5.9.4 Determination Amount of 1mL diluted hydrochloric acid (5.9.2.1), placed in 30mL test tube, with newly boiled and cooled water to 20mL, added 1mL potassium iodide solution, starch indicator solution 1mL and 2.0mL standard iodine solution, shake. 1mL sample was added to the tube, the solution Blue does not disappear. 5.10 Determination of non-volatile matter content 5.10.1 Principle of the method The amount of sample was evaporated to dryness, constant, weighing. 5.10.2 Instruments General laboratory equipment. 5.10.3 analysis step Weigh about 5g sample (accurate to 0.01g), moved already weighed (accurate to 0.0001g) evaporating dish, evaporated to dryness on a steam bath, and then After drying at 110 ℃ 1h. Placed in a desiccator to cool to room temperature, weigh (accurate to 0.0001g). 5.10.4 Calculation Results Non-volatile content mass fraction 5 and its value is expressed in%, according to equation (5) calculation. 100 (5) Where. 5.10.5 allowable difference Take the arithmetic mean of the parallel determination results to report results. The absolute value of the difference between the results of parallel determination of not more than 0.005%. 5.11 Determination of Arsenic 5.11.1 Determination of arsenic content diethyl dithiocarbamate silver spectrophotometry (Arbitration Act) 5.11.1.1 principle of the method In an acidic medium with potassium iodide and stannous chloride As5 + reduced to As3 +, plus zinc particles react with acids to produce new ecological hydrogen to As3 + further reduced to arsine was absorbed pyridine solution diethyl dithiocarbamate silver [Ag (DDTC)], generating purple colloid Solution absorbance was measured with a spectrophotometer. Reaction is as follows. AsH3 + 6Ag (DDTC) = 6Ag ↓ + 3H (DDTC) + As (DDTC) 3 5.11.1.2 Reagents and materials The reagents used are not arsenic. 5.11.1.2.1 hydrochloric acid; 5.11.1.2.2 arsenic trioxide. Arsenic trioxide is dangerous --- virulent. 5.11.1.2.3 zinc particl......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB 1897-2008_English be delivered?Answer: Upon your order, we will start to translate GB 1897-2008_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 1897-2008_English with my colleagues?Answer: Yes. The purchased PDF of GB 1897-2008_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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