This document is developed in accordance with the rules given in GB/T 1.1-2020 Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents.
This document replaces GB/T 25819-2010 Liquid reactive black PWF. In addition to structural adjustments and editorial changes, the following main technical changes have been made with respect to GB/T 25819-2010:
——The clause "Terms and definitions" has been added (see Clause 3);
——The indexes of shade in colourimetry and storage stability have been added (see 4.1);
——The mass fraction index with solid content has been deleted (see 3.2 in Edition 2010);
——The indexes for water insoluble matter (mass fraction) and pH value have been changed (see 4.1 hereof; 3.2 of Edition 2010);
——The control requirements and test method of harmful aromatic amines have been modified (see 4.1 and 6.9 hereof; 3.2 and 5.9 of Edition 2010);
——The sampling quantity has been modified (see Clause 5; Clause 4 of Edition 2010);
——The visual estimation method has been modified (see 6.1 hereof and 5.1 of Edition 2010);
——The content of standard dyes has been added (see 6.2.1);
——The content of arbitration inspection has been added (see 6.2.2);
——The method of low-temperature dyeing has been added (see 6.2.4);
——The partial contents of marking, labeling, packaging, transportation and storage have been modified (see Clause 8 hereof and Clause 7 of Edition 2010).
Attention is drawn to the possibility that some of the parts of this document may be the subject of patent rights. The issuing body of this document shall not be held responsible for identifying any or all such patent rights.
This document was proposed by China Petroleum and Chemical Industry Federation.
This standard is under the jurisdiction of the National Technical Committee on Dyestuff of Standardization Administration of China (SAC/TC 134).
This document was firstly issued in 2010, and this edition is the first revision.
Dyestuffs - Liquid reactive black
1 Scope
This standard specifies the requirements, sampling, test methods, inspection rules, marking, labeling, packaging, transportation and storage of liquid reactive black products.
This document is applicable to the quality control of liquid reaction black products.
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 2374-2017 Dyestuffs - General rules for dyeing test
GB/T 2381-2013 Dyestuffs and intermediate of dyestuffs - Determination of content of insoluble matters
GB/T 2387-2013 Reactive dyes - Determination of shade and relative strength
GB/T 2390-2013 Dyes - Determination of pH value
GB/T 2391-2014 Reactive dyes - Determination of degree of fixation
GB/T 3920-2008 Textiles - Tests for colour fastness - Colour fastness to rubbing
GB/T 3921-2008 Textiles - Tests for colour fastness - Color fastness to washing with soap or soap and soda
GB/T 3922-2013 Textiles - Tests for color fastness - Color fastness to perspiration
GB/T 4841.2-2006 Colour cards of standard depths for dyeing with navy blue and black dyestuffs
GB/T 6152-1997 Textiles - Tests for colour fastness - Colour fastness to hot pressing
GB/T 6678-2003 General principles for sampling chemical products
GB/T 6687 Glossary of dyestuff terms
GB/T 8427-2019 Textiles - Tests for color fastness - Color fastness to artificial light: Xenon arc
GB/T 8433-2013 Textiles - Tests for colour fastness - Colour fastness to chlorinated water (swimming-pool water)
GB/T 14576-2009 Textiles - Tests for color fastness - Color fastness to light of textiles wetted with artificial perspiration
GB 15258 General rules for preparation of precautionary label for chemicals
GB 19601 Limit and determination of 23 harmful aromatic amines in dye products
GB 20814 Limit and determination of the quantity of heavy-metal elements in dye products
GB/T 21882-2008 Liquid dyes - Determination of the viscosity
GB/T 23977-2009 Dyestuffs - Determination of content of salt - Conductance method
GB/T 24101 Limit and determination of 4-aminoazobenzene in dye products
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 6687 and the following apply.
3.1
storage stability
properties and quality of dyes remain stable after being stored for a certain time under specific environmental conditions
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
5 Sampling
6 Test methods
7 Inspection rules
8 Marking, labeling, packaging, transportation and storage
