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Leather and fur - Chemical tests - Determination of residual methylcyclosiloxane volatiles
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Basic data
| Standard ID | GB/T 45065-2024 (GB/T45065-2024) |
| Description (Translated English) | Leather and fur - Chemical tests - Determination of residual methylcyclosiloxane volatiles |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | Y46 |
| Classification of International Standard | 59.140.30 |
| Word Count Estimation | 10,142 |
| Date of Issue | 2024-12-31 |
| Date of Implementation | 2025-07-01 |
| Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration |
GB/T 45065-2024: Leather and fur - Chemical tests - Determination of residual methylcyclosiloxane volatiles
---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.
Leather and fur - Chemical tests - Determination of residual methylcyclosiloxane volatiles
Leather and fur Chemical testing
Determination of residual volatile methylcyclosiloxane
Leather and fur-Chemical tests-Determination of residual methylcyclosiloxane
ICS 59.140.30
CCS Y 46
National Standard of the People's Republic of China
Released on 2024-12-31
2025-07-01 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 is required.
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 for Standardization of Leather Industry (SAC/TC 252).
This document was drafted by Zhejiang Shenghui Chemical Co., Ltd., Shaanxi University of Science and Technology, Shanghai Institute of Quality Supervision and Inspection Technology, Asahikawa
Chemical (Suzhou) Co., Ltd., China Textile Standards (Shenzhen) Testing Co., Ltd., Wenzhou Guoshibang Polymer Materials Co., Ltd., Zhejiang Weifengxin
Materials Co., Ltd., Dongguan Weiside Technology Development Co., Ltd., China Leather and Shoe Research Institute Co., Ltd., China Light Industry Inspection and Certification Co., Ltd.
company.
The main drafters of this document are. Zhao Hailang, Lü Bin, Sang Jun, Jiang Sujie, Gao Dangge, Zhang Dahua, Chen Pei, Hu Kang, Ma Jianzhong,
Mao Linrong, Bu Qiaoqiao, Zhang Wenfu, Bao Haifeng, Chen Peipei, Ren Keshuai.
Leather and fur Chemical testing
Determination of residual volatile methylcyclosiloxane
Warning. Operators using this document should have practical experience in regular laboratory work. This document does not indicate all possible safety hazards.
The user is responsible for taking appropriate safety and health measures and ensuring that the conditions specified in relevant national laws and regulations are met.
The substances and wastes generated in some steps may be harmful to the local environment and their treatment process should comply with the provisions of relevant documents.
1 Scope
This document describes a method for the determination of residual amounts of volatile methylcyclosiloxanes in leather and fur products.
This document applies to octamethylcyclotetrasiloxane (D 4), decamethylcyclopentasiloxane in various types of leather, fur and their products
Determination of residual amounts of (D5) and dodecamethylcyclohexasiloxane (D6).
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies.
in this document.
GB/T 39364 Sampling areas for chemical, physical, mechanical and color fastness tests on leather
QB/T 1267 Sampling areas for chemical, physical, mechanical and colour fastness tests on fur
QB/T 1272 Preparation of fur chemical test samples
QB/T 1273 Determination of volatile matter in chemical tests on fur
QB/T 2716 Preparation of leather chemical test samples
QB/T 2717 Determination of volatile matter in leather chemical tests
3 Terms and definitions
There are no terms or definitions that require definition in this document.
4 Principle
The residual volatile methylcyclosiloxane in the leather or fur is extracted with ethyl acetate, and the extract is purified by filtering through a filter membrane and then
Select gas chromatograph (GC/MSD) with detector for determination and internal standard method for quantification.
5 Reagents and Materials
5.1 General provisions. Unless otherwise specified, all reagents used were of analytical grade.
5.2 Ethyl acetate, chromatographic grade.
5.3 Methylcyclosiloxane standard substance/standard sample, purity ≥ 98.0%, chemical information see Table 1.
...
