Path: Home > GB > Page25 > GB 29211-2012 Home > Standard_List > GB > Page25 > GB 29211-2012

GB 29211-2012 English PDF

US$139.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB 29211-2012: Food additives ferrous sulfate
Status: Valid

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
GB 29211-2012	English	139	Add to Cart	3 days [Need to translate]	Food additives ferrous sulfate	Valid	GB 29211-2012

PDF similar to GB 29211-2012

Standard similar to GB 29211-2012

GB 29209 GB 29208 GB 29207 GB 29202 GB 29203 GB 29204

Basic data

Standard ID	GB 29211-2012 (GB29211-2012)
Description (Translated English)	Food additives ferrous sulfate
Sector / Industry	National Standard
Classification of Chinese Standard	X40
Classification of International Standard	67.220.20
Word Count Estimation	6,617
Regulation (derived from)	Ministry of Health Bulletin 2012 No. 23
Issuing agency(ies)	Ministry of Health of the People's Republic of China
Summary	This Chinese standard applies to iron and sulfuric acid, food additives produced by refining ferrous sulfate heptahydrate ferrous sulfate and dry goods.

GB 29211-2012: Food additives ferrous sulfate

---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 additives ferrous sulfate National Standards of People's Republic of China National standards for food safety Food additives ferrous sulfate 2012-12-25 release 2013-01-25 Implementation Issued by the Ministry of Health of the People's Republic of China National standards for food safety Food additives ferrous sulfate

1 Scope

This standard applies to iron and sulfuric acid reaction, the refined production of food additives seven hydrated ferrous sulfate and ferrous sulfate dry goods. 2 Chemical name, molecular formula and relative molecular mass 2.1 Chemical name Heptahydrate ferrous sulfate Ferrous sulfate dry product 2.2 Molecular formula Hexahydrate ferrous sulfate. FeSO4 · 7H2O Ferrous sulfate dry product. FeSO4 · nH2O 2.3 Relative molecular mass Heptahydrate ferrous sulfate. 278.01 (according to the.2007 international relative atomic mass)

3 terms and definitions

The following terms and definitions apply to this document. 3.1 ferrous sulfate dry product Hexahydrate ferrous sulfate produced by heating drying process of ferrous sulfate. The degree of heating and drying is different from ferrous sulfate There are different proportions of ferrous sulfate hydrate and ferrous sulfate tetrahydrate.

4 technical requirements

4.1 sensory requirements Shall comply with the provisions of Table 1. Table 1 sensory requirements project Claim Heptahydrate ferrous sulfate ferrous sulfate ferrous sulfate Testing method Color gray or blue-green gray or light green State granular crystal powder Take the appropriate amount of sample in a 50 mL beaker and observe the color under natural light status 4.2 physical and chemical indicators Shall comply with the provisions of Table 2. Table 2 Physical and chemical indicators project index Heptahydrate ferrous sulfate ferrous sulfate ferrous sulfate Testing method Ferrous sulfate content, w /% (FeSO4 · 7H2O) 99.5 ~ 104.5 (FeSO4) 86.0 ~ 89.0 Appendix A A.4 Lead (Pb)/(mg/kg) ≤ 2 Appendix A A.5 Mercury (Hg)/(mg/kg) ≤ 1 Appendix A A.6 Arsenic (As)/(mg/kg) ≤ 3 GB/T 5009.76 Acid insoluble matter, w /% ≤ - 0.05 Appendix A A.7

Appendix A

Testing method A.1 Warning The samples of this standard are highly corrosive and some of the reagents used in the test methods are toxic or corrosive and should be taken in proper operation Safety and protective measures. A.2 General provisions The reagents and water used in this standard, when not specified, refer to the analytical reagent and the tertiary water specified in GB/T 6682-2008. Standard titration solution used in the test, the standard solution for the determination of impurities, preparations and products, in the absence of other requirements, according to GB/T 601, GB/T 602, GB/T 603. The solution used refers to an aqueous solution when it is not specified with any solvent formulation. A.3 Identification test A.3.1 Reagents and materials A.3.1.1 Potassium ferricyanide solution. 100 g/L. A.3.1.2 barium chloride solution. 100 g/L. A.3.1.3 Hydrochloric acid solution. 1 1. A.3.1.4 Lead acetate solution. 80 g/L. A.3.1.5 Ammonium acetate solution. 100 g/L. A.3.2 Instruments and equipment Acidity meter. scale value of 0.02. A.3.3 Identification method A.3.3.1 Identification of ferrous ions Weigh about 0.2g sample, dissolved in 10mL water, dropping potassium ferricyanide solution to produce dark blue precipitate. A.3.3.2 Identification of Sulfate A.3.3.2.1 Take about 1g sample, dissolve in 20mL water, add barium chloride solution, which produces a white precipitate, this white precipitate insoluble in hydrochloric acid Solution. A.3.3.2.2 Take about 1g sample, dissolve in 20mL water, add lead acetate solution, which produces white precipitate, this white precipitate dissolved in ammonium acetate Solution. A.3.3.2.3 Take about 1g sample, dissolve in 20mL water, add hydrochloric acid does not produce precipitation. A.3.3.3 Identification of acidity Weigh 10g ± 0.01g sample, dissolved in 100mL water, stir well. Use the calibrated pH meter to measure the pH of the solution 3.7 ± 0.5. A.4 Determination of ferrous sulfate content A.4.1 Methodological Summary In an acidic medium, the solution was titrated with standard titration with cerium sulfate and the endpoint was indicated with 1,10-phenanthroline-ferrous as an indicator. A.4.2 Reagents and materials A.4.2.1 Sulfuric acid solution. c (1/2H2SO4) = 2 mol/L. A.4.2.2 1,10-phenanthroline-ferrous indicator solution. 0.700 g of ferrous sulfate (FeSO4 · 7H2O) was dissolved in 100 mL of 15 g/L 1,10-phenanthroline solution, the solution is stored in a closed container. A.4.2.3 standard titration solution of cerium sulfate. c (CeSO4) = 0.1mol/L. A.4.3 Analysis steps Weigh about 1g of ferrous sulfate heptahydrate or about 0.6g ferrous sulfate dry, accurate to 0.0002g, placed in 500mL cone Bottle, add 25mL just boiled and cooled water and 25mL sulfuric acid solution dissolved, add a few drops of 1,10-phenanthroline - ferrous indicator solution, with sulfur The cerium standard titration solution changed from red to light blue. While the blank test. Blank test in addition to no sample, the other operations and the type and amount of reagents added (standard titration solution And the same). A.4.4 Calculation of results The mass fraction w1 of ferrous sulfate (in FeSO4 · 7H2O or FeSO4) is calculated according to formula (A.1) w1 = (V-V0) cM m x 1000 x 100% (A.1) Where. V --- titration sample solution consumption of cerium sulfate standard titration solution volume of the value in milliliters (mL); V0 --- titration blank sample solution consumption of cerium sulfate standard titration solution volume value in milliliters (mL); c - the exact value of the standard titration solution of cerium sulfate standard in moles per liter (mol/L); m - the mass of the sample, in grams (g); M - the value of the molar mass of ferrous sulfate (FeSO4 · 7H2O), ferrous sulfate (FeSO4), in grams per mole (g/mol) [M (FeSO4 · 7H2O) = 278.01, M (FeSO4) = 151.91]; 1000 --- conversion factor. The experimental results are based on the arithmetic mean of the parallel measurement results. The absolute difference between the two independent determinations obtained under repeatability conditions The value is not greater than 0.3%. A.5 Determination of lead (Pb) A.5.1 Reagents and materials A.5.1.1 Hydrochloric acid solution. 3 1. A.5.1.2 Ascorbic acid-sodium iodide solution. 100 mg/mL acid-resistant acid solution and 192.5 mg/mL sodium iodide aqueous solution mixing. A.5.1.3 Tri-n-octylphosphine oxide solution. Weigh 5.0 g of tri-n-octylphosphine oxide into a 100 mL volumetric flask and use methyl isobutyl ketone Dissolved and diluted to the mark, shake. WARNING. Tri-n-octylphosphine oxide is irritating and avoid contact with eyes, skin and clothing. A.5.1.4 Lead (Pb) standard solution. 0.1 mg/mL. A.5.1.5 Water. in line with GB/T 6682-2008 in the provisions of secondary water. A.5.2 Instruments and equipment Atomic Absorption Spectrophotometer. With lead hollow cathode lamp. A.5.3 Analysis steps A.5.3.1 Preparation of standard alignment solutions Remove the 1.0 mL lead standard solution into a 100 mL volumetric flask, dilute to the mark with water and shake well. Remove 2.0 mL of this solution to 50 mL In a volumetric flask, 10 mL of hydrochloric acid solution, 10 mL of water, 20 mL of ascorbic acid-sodium iodide solution, 5.0 mL of tri-n-octylphosphine oxide solution, Shake for 30s, standing stratified. Add water to the volumetric flask so that the organic layer rises to the neck of the volumetric flask and shake and stand still. A.5.3.2 Preparation of sample solution Weigh 1.0g sample, accurate to 0.01g, placed in 100mL volumetric flask, add 10mL hydrochloric acid solution, 10mL water, shaking Sample dissolved, then add 20mL ascorbic acid - sodium iodide solution, 5.0mL tri-n-octylphosphine oxide solution, shaking 30s, standing stratification. To the capacity Add the water in the vial so that the organic layer rises to the neck of the volumetric flask and shake and stand still. A.5.3.3 Determination Using an acetylene-air flame, the atomic absorption spectrophotometer was adjusted to the optimum working state at a wavelength of 283.3 nm, with methyl isobutyl Methanol zero, measure the absorbance of the sample solution and standard alignment solution, the absorbance of the sample solution should not be greater than the standard than the solution of the suction Luminosity. A.6 Determination of mercury (Hg) Weigh 3g sample, the exact value of 0.01g, add 30mL nitric acid solution (1.7mol/L), heated in the steam bath to dissolve. In the ice bath Cooled to room temperature and filtered with filter paper which had been rinsed with nitric acid solution (1.7 mol/L) and water respectively. To the filtrate was added 20 mL of sodium acetate Solution and 1 mL of hydroxylamine hydrochloride solution. While preparing a blank sample solution. And then in accordance with the provisions of GB/T 5009.17 method for determination. A.7 Determination of acid insoluble matter A.7.1 Reagents and materials Sulfuric acid solution. 1 99. A.7.2 Instruments and equipment A.7.2.1 glass sand core crucible. filter plate aperture of 5μm ~ 15μm. A.7.2.2 electric thermostat oven. can control the temperature at 105 ℃ ± 2 ℃. A.7.3 Analysis steps Weigh about 2g sample, accurate to 0.1g, placed in 500mL beaker, add 20mL just heated to boiling sulfuric acid solution to dissolve solution. Then heated to boiling, covered with a surface dish, heated in a steam bath for 1 h. The glass was dried at 105 ° C ± 2 ° C until the mass was constant Sand core crucible hot filter, washed with water 3 times ~ 5 times. The glass sand core crucible into the electric thermostat oven, at 105 ℃ ± 2 ℃ Dry to constant quality. A.7.4 Calculation of results The mass fraction w2 of the acid insoluble content is calculated according to the formula (A.2) w2 = m1-m2 m x 100% (A.2) Where. m1 --- the value of the quality of the glass sand core crucible and insoluble matter, in grams (g); m2 --- the value of the quality of the glass sand core crucible in grams (g); m - the mass of the sample, in grams (g). The experimental results are based on the arithmetic mean of the parallel measurement results. The absolute difference between the two independent determinations obtained under repeatability conditions The value is not more than 0.005%. 2102-

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB 29211-2012_English be delivered?

Answer: Upon your order, we will start to translate GB 29211-2012_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 29211-2012_English with my colleagues?

Answer: Yes. The purchased PDF of GB 29211-2012_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. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.