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GB/T 30796-2014 English PDF

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GB/T 30796-2014: The test method of food detergents -- Determination of formaldehyde
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PDF similar to GB/T 30796-2014


Standard similar to GB/T 30796-2014

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Basic data

Standard ID GB/T 30796-2014 (GB/T30796-2014)
Description (Translated English) The test method of food detergents -- Determination of formaldehyde
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard Y40
Classification of International Standard 71.100.40
Word Count Estimation 7,763
Date of Issue 7/8/2014
Date of Implementation 11/1/2014
Quoted Standard GB/T 6682; QB/T 2739
Regulation (derived from) 2014 National Standards Bulletin No. 18
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 test methods for food formaldehyde content was determined by detergents. This standard applies to food Determination of formaldehyde content in detergents, the detergent is also suitable for the determination of formaldehyde co

GB/T 30796-2014: The test method of food detergents -- Determination of formaldehyde

---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 test method of food detergents. Determination of formaldehyde ICS 71.100.40 Y40 National Standards of People's Republic of China Test methods for food use detergent Determination of formaldehyde Issued on. 2014-07-08 2014-11-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. The standard proposed by China National Light Industry Council. This standard by the national food washed disinfection products Standardization Technical Committee (SAC/TC395) centralized. This standard was drafted. China Daily Chemical Industry Research Institute [National Cleaning Products Quality Supervision and Inspection Center (Taiyuan)], Xi'an opened meters shares Parts Ltd., Shijiazhuang Weina Bang Japan Ltd., Zouping Shipping Group (limited) company, surfactants and detergent industry productivity Promotion Center. The main drafters of this standard. Fan Ping, Yan Fang, Hechun Liang, Liang Hongyan, ROCKETS, strong Peng Tao, Wang Na, Mao Jinsheng. Test methods for food use detergent Determination of formaldehyde

1 Scope

This standard specifies the test methods for food formaldehyde content was determined by detergents. This standard applies to food Determination of formaldehyde content in detergents, the detergent is also suitable for the determination of formaldehyde content in the non-food use. If the Detergents there formaldehyde donor, the measurement result is the total formaldehyde content that may be generated. The detection limit of quantitation of the assay was 0.7μg, the lowest limit of quantification was 3μg. When weigh 1g sample test, its methods of detection limit Was 0.7μg/g, the lowest limit of quantification was 3μg/g.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. Laboratory use specifications and test methods GB/T 6682 Analysis Preparation QB/T 2739 Test Methods commonly used detergent titration analysis (volumetric analysis) with the test solution

3 Limited Test

3.1 Principle In sulfuric acid, sodium sulfite and formaldehyde magenta and generated a colorless compound, followed by loss of carbon atoms bonded sulfonic acid group points Quinone compound to form a sub-type structure, so that Schiff reagent (magenta Schiff's reagent or reagents) to pink or purple. 3.2 Reagents Unless otherwise indicated in the analysis using only recognized as analytical reagents and GB/T 6682 provisions tertiary water. 3.2.1 magenta. 3.2.2 heptahydrate sodium sulfite. 3.2.3 hydrochloric acid, density d = 1.19. 3.2.4 sulfuric acid, c (H2SO4) = 1mol/L, amount of 60mL of concentrated sulfuric acid, with stirring slowly into 1000mL of water, cold However, shake. 3.2.5 Schiff reagent (magenta Schiff's reagent or reagents), weighed 100mg magenta beaker, adding hot water 75mL80 ℃, solution, solution. After cooling, 2.5g of sodium sulfite heptahydrate in hydrochloric acid and 4mL (3.2.3), diluted to 100mL, transferred to a brown bottle placed over night. This solution shelf life is generally two weeks should be used as a colorless. 3.3 Determination Weigh 2g sample (weighing accuracy 0.001g) in 10mL beaker, add 2 drops of sulfuric acid (3.2.4) and 2mL Schiff reagent (3.2.5), shake

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