GB/T 2910.17-2009: Textiles -- Quantitative chemical analysis -- Part 17: Mixtures of chlorofibre (homopolymers of vinyl chloride) and certain other fibers (method using sulfuric acid)

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Scope

This Part of GB/T 2910 specifies the method for determining the content of chlorinated
fibers in a mixture of the following fibers, after removal of non-fibrous matter by the
sulfuric acid method.
- Chlorinated fibers based on homopolymers of vinyl chloride (whether or not post-
chlorinated);
AND
- Cotton, viscose, cupro, modal, acetate, triacetate, polyamide, polyester, certain
polyacrylonitrile fibers and certain modified polyacrylonitrile fibers. [Here,
modified polyacrylonitrile fibers refer to those that dissolve when placed in
concentrated sulfuric acid (ρ = 1.84 g/mL).
When preliminary tests show that chlorinated fibers are not completely soluble in
dimethylformamide or carbon disulfide/acetone azeotropic mixtures, this method can
be used instead of GB/T 2910.12 and GB/T 2910.13.

Basic Data

Standard ID	GB/T 2910.17-2009 (GB/T2910.17-2009)
Description (Translated English)	Textiles -- Quantitative chemical analysis -- Part 17: Mixtures of chlorofibre (homopolymers of vinyl chloride) and certain other fibers (method using sulfuric acid)
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	W04
Classification of International Standard	59.080.01
Word Count Estimation	7,745
Date of Issue	2009-06-15
Date of Implementation	2010-01-01
Older Standard (superseded by this standard)	GB/T 2910-1997
Quoted Standard	GB/T 2910.1
Adopted Standard	ISO 1833-17-2006, IDT
Regulation (derived from)	National Standard Approval Announcement 2009 No.8 (Total No.148)
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary	This standard specifies the sulfuric acid method-unless the fiber material to the determination, methods mixture of chlorine fiber content consists of the following fibers: the chlorine -based fiber (whether or not after chlorination) chloride homopolymer, and cotton, stick plastic fibers, copper ammonia fiber, modal fiber, cellulose acetate fibers, triacetate, polyamide fiber, polyester fibers, certain polyacrylonitrile fiber and certain modified polyacrylonitrile fibers. [ The Department modified polyacrylonitrile fibers are those fibers into concentrated sulfuric acid (�� = 1. 84g/mL) when dissolved ]. Pre- test showed the fibers can not be completely dissolved in the chlorine-containing dimethylformamide or carbon disulphide/acetone azeotrope, the method can replace the GB/T 2910. 12 and GB/T 2910.