GB/T 45065-2024 Leather and fur - Chemical tests - Determination of residual methyleyclosiloxane volatiles
WARNING: Persons using this document shall be familiar with normal laboratory practice. This document does not purport to address all of the safety problems. It is the responsibility of the user to establish appropriate safety and health practices and to ensure compliance with any national regulatory conditions. Substances and waste generated in certain steps of this document may be harmful to the local environment, and the process of handling shall conform to the stipulations of the relevant documentation.
1 Scope
This document describes a method for determining the residual methyleyclosiloxane volatiles in leather and fur products.
This document is applicable to the determination of the residual octamethylcyclotetrasiloxane (D4), decamethylcyclopentasiloxane (D5) and dodecamethylcyclohexasiloxane (D6) in various types of leather, fur and products thereof.
2 Normative references
The following documents contain requirements which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 39364 Leather - Chemical Physical and Mechanical and Fastness Tests - Sampling Location
QB/T 1267 Fur - Chemical, physical and mechanical and fastness tests - Sampling location
QB/T 1272 Fur - Preparation of chemical test samples
QB/T 1273 Fur - Chemical tests - Determination of volatile matter
QB/T 2716 Leather - Preparation of chemical test samples
QB/T 2717 Leather - Chemical tests - Determination of volatile
3 Terms and definitions
No terms and definitions are listed in this document.
4 Principle
The residual methylcyclosiloxane volatiles in leather or fur are extracted with ethyl acetate. After the extract is filtered and purified by filter membrane, it is determined by a gas chromatograph (GC/MSD) equipped with mass selective detector and quantified by internal standard method.
Contents Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Principle 5 Reagents and materials 6 Instruments and apparatus 7 Sampling and preparation of specimens 8 Procedure 9 Calculation and expression of results 10 Feasibility of the method 11 Test report
