GB/T 33918-2017 English PDF

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GB/T 33918-2017: Fragrance/Flavor substances -- Determination of peroxide value
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 33918-2017	89	Add to Cart	3 days	Fragrance/Flavor substances -- Determination of peroxide value	Valid

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Basic data

Standard ID: GB/T 33918-2017 (GB/T33918-2017)
Description (Translated English): Fragrance/Flavor substances -- Determination of peroxide value
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Y41
Classification of International Standard: 71.100.60
Word Count Estimation: 4,494
Date of Issue: 2017-07-12
Date of Implementation: 2018-02-01
Quoted Standard: GB/T 601
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 method for the determination of perfume peroxidation values. This standard applies to the determination of perfume peroxide value.

GB/T 33918-2017: Fragrance/Flavor substances -- Determination of peroxide value

---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.
Fragrance/Flavor substances. Determination of peroxide value ICS 71.100.60 Y41 National Standards of People's Republic of China Perfume peroxide value determination 2017-07-12 Posted 2018-02-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard proposed by the China Light Industry Federation. This standard by the National Spice cosmetics Standardization Technical Committee (SAC/TC257) centralized. This standard was drafted unit. Shanghai Institute of Spices, Tianjin Institute of product quality supervision and inspection technology, Anhui Feng Le spice limited liability the company. The main drafters of this standard. Cao Yi, Zhang Xu Dan, Wu Yan, the golden Zhang, Cao Zhiyun, Zhang Yulian, Wang Yanping. Perfume peroxide value determination

1 Scope

This standard specifies the method of determination of perfume peroxide value. This standard applies to the determination of perfume peroxide value.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 601 chemical reagent standard titration solution preparation

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Peroxide value peroxidevalue The amount of substance that oxidizes potassium iodide under the specified operating conditions of the sample, expressed in millimoles of active oxygen per kg.

4 principle

Peroxide in spices, and potassium iodide role to generate free iodine, sodium thiosulfate solution titration, calculate the content.

5 reagent

The reagents used are analytical reagents. Water is distilled water or water of comparable purity, boil and cool to room temperature immediately before use. 5.1 Glacial acetic acid - trichloromethane solution 3 volumes of glacial acetic acid are mixed with 2 volumes of trichloromethane. 5.2 Glacial acetic acid-cyclohexane solution. 3 volumes of glacial acetic acid are mixed with 2 volumes of cyclohexane. 5.3 saturated potassium iodide solution, freshly prepared. Preparation Methods Weigh 14g potassium iodide, add 10mL water to dissolve, if necessary, to make it slightly soluble in heat, cooled and stored in a brown bottle. (Indeed Paul solution in the presence of crystalline potassium iodide. ) 5.4 sodium thiosulfate standard solution, c (Na2S2O3) = 0.1mol/L, preparation and calibration methods should be GB/T 601 implementation. 5.5 sodium thiosulfate standard solution, c (Na2S2O3) = 0.01mol/L. Preparation Methods Pipette pipette 10.0mL0.1mol/L of sodium thiosulfate standard solution to 100mL volumetric flask, add water dilute Release to the mark. 5.6 Starch indicator solution (10g/L) Weigh soluble starch 0.50g, add a little water, transferred into a paste, poured into 50mL boiling water and mix thoroughly, boil. Pro use now with. ......

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