GB/T 2910.22-2009: Textiles -- Quantitative chemical analysis -- Part 22: Mixtures of viscose or certain types of cupro or modal or lyocell and flax of ramie fibres (method using formic acid and zinc chloride)

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Scope

This Part of GB/T 2910 specifies using formic acid and zinc chloride method to
determine, after removing the non-fibrous substances, the fiber contents in the binary
mixtures of viscose, certain type of cupro, modal, lyocell, flax, and ramie.
This Part is not applicable to the mixture the mixtures that can’t be dissolved
completely due to the viscose, certain type of cupro, model, modal, and lyocell
containing the durable finishing agents and reactive dyes which can’t be completely
removed.
Safety warning. the substances or methods used in this Part may be hazardous
to human health and environment if used improperly.

Basic Data

Standard ID	GB/T 2910.22-2009 (GB/T2910.22-2009)
Description (Translated English)	Textiles -- Quantitative chemical analysis -- Part 22: Mixtures of viscose or certain types of cupro or modal or lyocell and flax of ramie fibres (method using formic acid and zinc chloride)
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	W04
Classification of International Standard	59.080.01
Word Count Estimation	6,691
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Older Standard (superseded by this standard)	GB/T 2910-1997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
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 use of formic acid/zinc chloride determination to go after unless viscose fiber material, ramie two-component mixture method fiber content, certain copper ammonia fiber, modal or lyocell fiber and flax. This section does not apply to viscose fiber, presence lyocell durability can not be completely removed finishing agents or dyes, resulting in a mixture which can not be completely dissolved, certain copper ammonia fiber, Modal fiber. Security Alert: substances or methods used in this section in the case of improper use may harmful to human health and the environment.