Standard No.:	GB/T 2910.17-2009
English Name:	Textiles—Quantitative chemical analysis—Part 17:Mixtures of chlorofibers(homopolymers of vinyl chloride)and certain other fibers(method using sulfuric acid)
Chinese Name:	纺织品 定量化学分析 第17部分：含氯纤维（氯乙烯均聚物）与某些其他纤维的混合物（硫酸法）
Chinese Classification:	W04    Basic standards and general methods
Professional Classification:	GB    National Standard
ICS Classification:	59.080.01 59.080.01     Textiles in general 59.080.01
Issued by:	AQSIQ
Issued on:	2009-06-15
Implemented on:	2010-1-1
Status:	valid
Superseding:	GB/T 2910-1997 Textile--Binary fibre mixtures--Quantitative chemical analysis
Language:	English
File Format:	PDF
Word Count:	2000 words
Price(USD):	74.00
Delivery:	via email in 1 business day

1 Scope



This part of GBT 2910 specifies a method, using sulfuric acid, to determine the percentage of chlorofibres, after removal of non - fibrous material, in textiles made of binary mixtures of chlorofibres based on homopolymers of vinyl chloride (after - chlorinated or not) and cotton, viscose, cupro, modal, acetate, triacetate, polyamide, polyester, certain acrylic and certain modacrylic fibres. [The modacrylics concerned are those which give a limpid solution when immersed in concentrated sulfuric acid (ρ = 1, 84 g/ml).]

This method can be used, particularly in place of the methods described in GBT 2910.12 and GBT 2910.13, in all cases where a preliminary test shows that the chlorofibres do not dissolve completely either in dimethylformamide or in the azeotropic mixture of carbon disulfide and acetone.

Contents
Foreword I
1 Scope
2 Normative References
3 Principle
4 Reagents
5 Apparatus
6 Test Procedure
7 Calculation and Expression of Results
8 Precision
Bibliography