GB/T 45212-2025 English PDF

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GB/T 45212-2025: Determination of methyldibromo glutaronitrile in cosmetics - Gas chromatography method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 45212-2025	199	Add to Cart	3 days	Determination of methyldibromo glutaronitrile in cosmetics - Gas chromatography method	Valid

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Basic data

Standard ID: GB/T 45212-2025 (GB/T45212-2025)
Description (Translated English): Determination of methyldibromo glutaronitrile in cosmetics - Gas chromatography method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Y42
Classification of International Standard: 71.100.70
Word Count Estimation: 10,179
Date of Issue: 2025-01-24
Date of Implementation: 2025-08-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 45212-2025: Determination of methyldibromo glutaronitrile in cosmetics - Gas chromatography 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.
ICS 71.100.70 CCSY42 National Standard of the People's Republic of China Determination of Methyl Dibromoglutaronitrile in Cosmetics Gas chromatography Released on 2025-01-24 2025-08-01 Implementation State Administration for Market Regulation The National Standardization Administration issued

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting. Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed by China Light Industry Federation. This document is under the jurisdiction of the National Technical Committee on Standardization of Flavors and Fragrances and Cosmetics (SAC/TC257). This document was drafted by. Suzhou Shipu Testing Technology Co., Ltd., Suzhou Kenairui Testing Technology Co., Ltd., Suke Shipu Biotechnology Technology (Suzhou) Co., Ltd., Suzhou Quality Inspection Science Research Institute, Jiawenli (Fujian) Cosmetics Co., Ltd., Guangzhou Quality Supervision and Inspection Research Institute of Food and Drug Administration, Shanghai Institute of Spices Co., Ltd., Shanghai Institute of Food and Drug Administration, Guangzhou Mashanghui Biotechnology Co., Ltd., Jiangsu Provincial Product Quality Supervision and Inspection Institute, Jiangsu Food and Drug Supervision and Inspection Institute, Hebei Food Inspection Institute, Suzhou Drug Inspection and Testing Institute Research Center, Jiangsu Provincial Food and Drug Administration Review and Verification Suzhou Branch, Changzhou Food and Drug Fiber Quality Supervision and Inspection Center, Suzhou Wujiang District Food and Drug Administration, Shenzhen Institute of Drug Control, China Pharmaceutical University, Soochow University, Tsinghua University, Hainan University, Perfect (Guangdong) Daily Necessities Co., Ltd. The main drafters of this document are. Song Shuwen, Jiang Lei, Jie Li, Zhang Kefeng, He Shuang, Lu Jian, Chen Linlin, Du Xinfeng, Fang Fang, Chen Laicheng, Zhang Yan, Dai Dan, Yang Bin, Zheng Rong, Li Jianxiang, Zhao Weijun, Zhu Dandan, Kang Wei, Huang Hongxia, Li Jincai, Xiao Danhua, Xu Yong, Wang Chenxia, Han Jiejun, Ye Zhuhong, Liu Danyang, Wang Yang, Xun Zhiqing, Ru Ge, Huang Jinfeng, Guo Xindong, Pan Kai, Qin Tianyi, Wang Yi, Ye Jiarong, Lin Shaopi, Lu Yinghong, Gao Long, Gu Pan, Gao Hongying and Liu Qunlin.

Introduction

The substances tested in this document are prohibited raw materials as stipulated in my country's "Technical Specifications for Safety of Cosmetics (2015 Edition)". Prohibited raw materials refer to substances that cannot be used as cosmetic raw materials. The "Cosmetic Safety Technical Specifications (2015 Edition)" stipulates. If the technical When it is unavoidable to introduce prohibited substances into cosmetics as impurities, the national limit should be followed; if no limit is set, Safety risk assessment to ensure that no harm to human health occurs under normal, reasonable and foreseeable conditions of use. At present, my country has not yet stipulated the limit value of this substance. The formulation of this document only provides a detection method for the determination of this substance in cosmetics. Determination of Methyl Dibromoglutaronitrile in Cosmetics Gas chromatography Warning---People who use this document should have practical experience in formal laboratory work. This document does not address all possible safety issues. The user is responsible for taking appropriate safety and health measures and ensuring that the conditions are met in accordance with relevant national regulations.

1 Scope

This document describes the principle, reagents and materials, instrumentation, sample preparation and gas chromatography method for the determination of methyl dibromoglutaronitrile in cosmetics. Preparation and experimental steps, experimental data processing, recovery rate and precision, etc. This document is applicable to the determination of methyl dibromoglutaronitrile in cosmetics such as aqueous solutions, emulsions, creams, etc. The detection limit of the method in this document is 10.0 mg/kg and the quantification limit is 20.0 mg/kg.

2 Normative references

This document has no normative references.

3 Terms and definitions

There are no terms or definitions that require definition in this document.

4 Principle

The sample was extracted with acetonitrile by ultrasonic method, and the extract was purified by n-hexane, centrifuged at high speed, and filtered to obtain the target solution. The test solution was injected into gas chromatograph and detected by electron capture detector, with retention time for qualitative analysis and external standard method for quantitative analysis.

5 Reagents and Materials

Unless otherwise specified, only chromatographic grade reagents were used. 5.1 Acetonitrile. 5.2 n-Hexane. 5.3 Methyldibromoglutaronitrile standard substance/standard sample. purity not less than 98%, English name, CAS number, The molecular formula, relative molecular mass and chemical structure are shown in Table A.1 in Appendix A. 5.4 Acetonitrile saturated n-hexane solution. Take 20 mL of acetonitrile (5.1), add it to 50 mL of n-hexane (5.2), mix well, let stand, and the supernatant spare. 5.5 Standard stock solution (ρ = 1000 μg/mL). Accurately weigh 10 mg (accurate to 0.0001 g) of the standard substance/standard sample (5.3) and place it in In a 10 mL brown volumetric flask, dissolve with acetonitrile (5.1) and dilute to volume to obtain a standard stock solution with a mass concentration of 1000 μg/mL. Store at 2℃~8℃ away from light. It can be stored for 6 months. 5.6 Filter membrane. pore size 0.22 μm, made of polytetrafluoroethylene. ......

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