SN/T 4505-2016 English PDF

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SN/T 4505-2016: Determination of di-ethylene glycol in cosmetics--GC-MS method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 4505-2016	229	Add to Cart	3 days	Determination of di-ethylene glycol in cosmetics--GC-MS method	Valid

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Basic data

Standard ID: SN/T 4505-2016 (SN/T4505-2016)
Description (Translated English): Determination of di-ethylene glycol in cosmetics--GC-MS method
Sector / Industry: Commodity Inspection Standard (Recommended)
Classification of Chinese Standard: Y42
Word Count Estimation: 10,183
Date of Issue: 2016-06-28
Date of Implementation: 2017-02-01
Regulation (derived from): State-Quality-Inspection-Accredidation [2016] No.318
Issuing agency(ies): General Administration of Customs

SN/T 4505-2016: Determination of di-ethylene glycol in cosmetics--GC-MS method

---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.
(Determination of diethylene glycol residues in cosmetics - Gas chromatography - mass spectrometry) People's Republic of China Entry-Exit Inspection and Quarantine Industry Standard Residual amount of diethylene glycol in cosmetics Determination of GC/MS Released.2016-06-28 2017-02-01 implementation People's Republic The General Administration of Quality Supervision, Inspection and Quarantine issued

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed and managed by the National Certification and Accreditation Administration. This standard was drafted. Jiangsu Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China. The main drafters of this standard. Yu Wenjing, Ding Tao, Zheng Li, Chen Shaobo, Zhao Yulan, Zhang Wei, Shen Jie. Residual amount of diethylene glycol in cosmetics Determination of GC/MS

1 Scope

This standard specifies the gas chromatography-mass spectrometry method for the determination of diethylene glycol in creams, lotions and powder cosmetics. This standard applies to the determination of diethylene glycol in creams, lotions and powder cosmetics.

2 Principle

The sample was extracted by methanol, adjusted to volume, filtered, and determined by gas chromatography-mass spectrometry, selected by ion detection, and quantified by external standard method.

3 reagents and materials

Secondary deionized water or water of equivalent purity was used in the analysis unless otherwise stated. 3.1 Methanol (chromatographically pure). 3.2 Anhydrous sodium sulfate (analytical grade). ignited at 650 ° C for 4 h, stored in a closed desiccator for use. 3.3 Diethylene glycol standard. purity ≥ 99%. 3.4 Diethylene glycol standard stock solution. Accurately weigh 0.1g of diethylene glycol standard (accurate to 0.1mg), and dilute to 100mL with methanol. The concentration of the alcohol standard stock solution was 1 mg/mL and was stored in a refrigerator at 4 °C. 3.5 Diethylene glycol standard working solution. accurately transfer a certain volume of standard stock solution (3.4) to 7 100mL volumetric flasks, methanol (3.1) Dilute to volume. Formulated as a standard working solution of diethylene glycol at concentrations of 1.0, 2.0, 4.0, 8.0, 10.0 mg/L for drawing standards curve.

4 instruments

4.1 Gas Chromatography-Mass Spectrometer. equipped with an electron impact ionization source (EI). 4.2 vortex oscillator. 4.3 Ultrasonic cleaner. 4.4 0.45 μm organic filter.

5 Analysis steps

5.1 Sample Processing A 5 g (accurate to 0.001 g) sample was weighed into a 50 mL stoppered colorimetric tube. The cream sample is sequentially added with 3 g of anhydrous sodium sulfate, and then Add 15 mL of methanol (3.1); add 3 g of anhydrous sodium sulfate to the liquid sample, then add 15 mL of methanol (3.1); the powder sample is added directly. 15 mL of methanol (3.1). Vortex for 30s, after 20min at room temperature, dilute to 25mL with methanol, mix, filter through the membrane, the filtrate is Sample liquid to be tested. ......

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