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GB/T 2910.22-2009 English PDF (GBT2910.22-2009)

GB/T 2910.22-2009 English PDF (GBT2910.22-2009)

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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)

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.
GB/T 2910.22-2009
GB
NATIONAL STANDARD OF THE
PEOPLE REPUBLIC OF CHINA
ICS 59.080.01
W 04
Partially replacing GB/T 2910-1997
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)
ISSUED ON. JUNE 15, 2009
IMPLEMENTED ON. JANUARY 1, 2010
Issued by. General Administration of Quality Supervision, Inspection and Quarantine;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative References ... 5
3 Principles ... 5
4 Reagents ... 6
5 Apparatus ... 6
6 Test Procedures ... 6
7 Result Calculation and Expression ... 7
8 Precision ... 7
--- Part 19. Mixtures of Cellulose Fibres and Asbestos (Method by Heating); --- Part 20. Mixtures of Elastane and Some Other Fibers (Method Of Using Dimethylacetamide);
--- Part 21. Mixtures of Chlorofibers, Certain Modacrylics, Certain Elastanes, Acetates, Triacetates and Certain Other Fibers (Method Using Cyclohexanone);
--- 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);
--- Part 23. Mixtures of Polyethylene and Polypropylene (Method Using
Cyclohexanone);
--- Part 24. Mixtures of Polyester and Some Other Fibers (Method Using Phenol and Tetrachloroethane);
--- Part 101. Mixtures of Soybean Protein Composite Fibre and Certain Other Fibers. This Part belongs to Part 22 of GB/T 2910.
GB/T 2910-1997 is replaced by the following standards. GB/T 2910.1, GB/T 2910.3, GB/T 2910.4, GB/T 2910.6, GB/T 2910.7, GB/T 2910.8, GB/T 2910.9, GB/T 2910.10, GB/T 2910.11, GB/T 2910.12, GB/T 2910.13, GB/T 2910.14, GB/T 2910.15, GB/T 2910.16, GB/T 2910.17, GB/T 2910.18, GB/T 2910.19 and GB/T 2910.22.
This Part together with GB/T 2910.6 replaced the Chapter 7 of GB/T 2910-1997 Textile ?€? Binary Fiber Mixtures ?€? Quantitative Chemical Analysis; compared with the Chapter 7 of GB/T 2910-1997, the differences are as follows.
--- Delete cotton from the scope.
This Part was proposed by China National Textile and Apparel Council.
This Part shall be under the jurisdiction of Basic Branch of National
Technical Committee for Standardization of Textile (SAC/TC 209/SC 1).
Drafting organizations of this Part. State Textile Products Quality Supervision and Inspection Center, Shenzhen Testing Center of China Textile Academy.
Chief drafting staffs of this Part. Wang Ying, Chen Pei, Li Chun, and Anli. The historical editions replaced by GB/T 2910 are as follows.
--- GB/T 2910-1982;
--- GB/T 2910-1997.
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)
1 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.
2 Normative References
The provisions in following documents become the provisions of this Part through reference in this Part of GB/T 2910. For dated references, the subsequent amendments (excluding corrigendum) or revisions do not apply to this Part, however, parties who reach an agreement based on this Part are encouraged to study if the latest versions of these documents are applicable. For undated references, the latest edition of the referenced document applies.
GB/T 2910.1 Textiles - Quantitative Chemical Analysis - Part 1. General Principles of Testing (GB/T 2910.1-2009, ISO 1833-1.2006, IDT)
3 Principles
Use formic acid and zinc chloride reagents to dissolve and remove the viscose, certain type of cupro, model, modal, and lyocell from the mixture with known dry mass; collect the residues, clean, dry and weigh; use the modified mass to calculate its percentage

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