GB/T 21888-2023
CI Acid Red 131 (Acid Brilliant Red P-9B 150%) (English Version)
- Standard No.
- GB/T 21888-2023
- Language
- Chinese, Available in English version
- Release Date
- 2023
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Latest
- GB/T 21888-2023
- Replace
- GB/T 21888-2008
- Scope
- This document specifies the quality requirements, test methods, inspection rules, and marking, labeling, packaging, transportation and storage requirements of CI Acid Red 131 (Acid Brilliant Red P-9B 150%). This document is applicable to CI Acid Red 131 (Acid Brilliant Red P-9B 150%) products.
- Introduction
GB/T 21888—2023 Acid Red 131 Standard Overview
GB/T 21888—2023 "Acid Red 131 (Acid Brilliant Red P-9B 150%)" standard is a comprehensive revision of the original standard GB/T 21888—2008, mainly involving technical requirements, test methods and safety specifications for dyes. This standard applies to the quality control and application of this dye.
Background of Standard Formulation and Technological Evolution
Since its release in 2008, the GB/T 21888 series of standards have been widely used in the dye industry. This revision mainly responds to the development needs of the industry and technological progress, focusing on adding color measurement and color fastness requirements for chlorinated water, and optimizing the control methods for harmful aromatic amines.
Comparison of core technical requirements
Item Original standard GB/T 21888—2008 New standard GB/T 21888—2023 Appearance requirements Deep red powder Deep red uniform powder or granules Colorimetric indicators Approximate visual inspection Approximate visual inspection, colorimetric DE ≤0.50, DC DH ±0.30 Control of harmful aromatic amines Comply with the requirements of GB 19601 New limit requirements in GB/T 24101 Colour fastness to chlorinated water No clear requirements Add the index of discoloration resistance to chlorinated water (assessed after 4h) Precautions in actual application
Acid Red 131 Pay attention to the following points during use:
- It needs to be fully dissolved and prepared before dyeing. It is recommended to adopt the standard conditions of GB/T 2374 and GB/T 2378.
- When dyeing at high temperature (such as 90℃～95℃), the heating speed needs to be controlled to ensure the stability of the dye performance.
- For wool and nylon fabrics, it is recommended to use weak acid and neutral dyeing processes respectively to obtain the best results.
GB/T 21888-2023 Referenced Document
- 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 24101 Limit and determination of 4-aminoazobenzene in dye products
- GB/T 6687 Glossary of dyestuff terms
- GB/T 6693-2009 Dyestuffs.Determination of the dusting behaviour
- 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 21888-2023 history
- 2023 GB/T 21888-2023 CI Acid Red 131 (Acid Brilliant Red P-9B 150%)
- 2008 GB/T 21888-2008 Acid brilliant red P-9B 150% (C.L Acid red 131)