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GB/T 22427.13-2008 English PDF

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US$154.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 22427.13-2008: Starch and derived products -- Determination of sulfur dioxide content
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 22427.13-2008	154	Add to Cart	3 days	Starch and derived products -- Determination of sulfur dioxide content	Valid

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Basic data

Standard ID: GB/T 22427.13-2008 (GB/T22427.13-2008)
Description (Translated English): Starch and derived products -- Determination of sulfur dioxide content
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: X11
Classification of International Standard: 67.180.20
Word Count Estimation: 8,873
Date of Issue: 2008-10-19
Date of Implementation: 2009-03-01
Older Standard (superseded by this standard): GB/T 12094-1989
Adopted Standard: ISO 5379-1983, IDT
Regulation (derived from): National Standard Approval Announcement 2008 No.17 (Total No.130)
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 standard specifies the determination of sulfur dioxide content of starch and its derivatives in the acidity of law and turbidity method. This standard applies to the determination of sulfur dioxide content of starch and its derivatives. Acidity law applies to samples of sulfur dioxide content above 16 mg/kg, the turbidity method is applicable to samples of sulfur dioxide content of less than 16 mg/kg of.

GB/T 22427.13-2008: Starch and derived products -- Determination of sulfur dioxide content

---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.
Starch and derived products. Determination of sulfur dioxide content ICS 67.180.20 X11 National Standards of People's Republic of China GB/T 22427.13-2008/ISO 5379. 1983 Replacing GB/T 12094-1989 Determination of sulfur dioxide content of starch and its derivatives (ISO 5379. 1983, Starchandderivedproducts-Determinationofsulfurdioxide content-Acidimetricmethodandnephelometricmethod, IDT) Posted 2008-10-19 2009-03-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard is identical with ISO 5379. 1983 "Determination of sulfur dioxide content of starch and its derivatives acidity and turbidity method Law" (English Edition), its content and structure of ISO 5379. 1983 is consistent, only made editorial changes. This standard replaces GB/T 12094-1989 "starch and derivatives sulfur dioxide content determination." This standard and GB/T 12094-1989 compared to major changes are as follows. --- Standard name changed to "the determination of starch and its derivatives of sulfur dioxide content"; --- Increased detection methods. turbidity method as a method for determination of sulfur dioxide content writing standards; --- Improve the standard format, according to the International System of Units standardized units; --- Added "6 test report." This standard is proposed and managed by China General Chamber of Commerce. This standard was drafted. Chinese Chamber of Commerce Business Standard centers, food, Jiangnan University, China Starch Industry Association modified starch professional committee. The main drafters of this standard. Guzheng Biao, Hong Yan, Cheng Li, Chen Hongxing, Zhong Yang Chao, Jin Xiaolei. GB/T 22427.13-2008/ISO 5379. 1983 Determination of sulfur dioxide content of starch and its derivatives

1 Scope

This standard specifies the determination of sulfur dioxide content of starch and its derivatives acidity and turbidity method method. This standard applies to the determination of sulfur dioxide content of starch and its derivatives. Acidity method is suitable for sulfur content higher than 16mg/kg Sample turbidity method is suitable for the sulfur dioxide content of less than 16mg/kg of the sample. Principle 2 The samples were acidified and heated to release sulfur dioxide, and nitrogen flow through with a dilute solution of hydrogen peroxide and oxidized to sulfuric acid is absorbed by Sodium hydroxide solution was titrated.

3 acidity law

3.1 Reagents It should be used not contain sulfate analytical reagent and distilled water, distilled water and boiled new soon. 3.1.1. Nitrogen. oxygen-free. 3.1.2 Hydrogen peroxide solution. 30mL mass fraction of 30% hydrogen peroxide, pour 1000mL volumetric flask, add water to the mark. Concentration approximately 9g/L ~ 10g/L. Now with the current. 3.1.3 hydrochloric acid solution. set 150mL of concentrated hydrochloric acid (ρ20 = 1.19g/mL) in 1000mL volumetric flask, add water to volume scale. 3.1.4 bromophenol blue indicator solution. 100mg bromophenol blue dissolved in 100mL concentration of 20% (volume fraction) ethanol solution. 3.1.5 Tashiro (Tashiro) indicator. the 30mg and 50mg of methyl red methylene blue is dissolved in 90% 120mL (volume Fraction) ethanol, diluted with water to 200mL, and mix. NOTE. Tashiro (Tashiro) indicator (3.1.5) only in the determination of acidity method (3.3.4) use. Bromophenol blue indicator (3.1.4) for the determination of acidity law While not affecting the turbidity method of measurement (Chapter 4). 3.1.6 standard sodium hydroxide solution. Ba = 0.1mol/L. 3.1.7 standard sodium hydroxide solution. Ba = 0.01mol/L. Note 1. 3.1.6 and 3.1.7 solution should be formulated using water containing no carbon dioxide, the water can be cooled by water from a stream of nitrogen obtained after boiling. Note 2. The recommended solution is suitable for small volume experiments, if desired, to increase the amount of sample. 3.1.8 iodine standard solution. Ba = 0.01mol/L. 3.1.9 Starch indicator. Ba = 5g/L. 0.5g of soluble starch was dissolved in 100mL of water and heated with stirring to boiling, then add 20g of sodium chloride, stirring until completely dissolved, cool to room temperature before use. 3.1.10 potassium metabisulfite and disodium edetate mixed solution. 0.87g potassium metabisulfite (K2S2O5) and 0.20g ethylenediamine Disodium (Na2H2EDTA) dissolved in water and quantitatively transferred to a 1000mL volumetric flask, add water to the mark, mix thoroughly. 3.2 Instrument At the ground joint glassware to match. 3.2.1 conical flask. 100mL. 3.2.2 flask. 1000mL. 3.2.3 straw. 0.1mL, 1mL, 2mL, 3mL, 5mL and 20mL. 3.2.4 Semi-Micro burettes. 10mL. 3.2.5 Buret. 25mL and 50mL. 3.2.6 Analytical Balance. GB/T 22427.13-2008/ISO 5379. 1983 ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 22427.13-2008_English be delivered?

Answer: Upon your order, we will start to translate GB/T 22427.13-2008_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/T 22427.13-2008_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 22427.13-2008_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. 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 Sales@ChineseStandard.net. 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.