HG/T 4974~4978-2016 in English

This standard outlines specifications for several dye products, including C I Solvent Red 135 and 179, C I Solvent Yellow 114, C I Solvent Violet 59, and C I Solvent Blue 78. It provides detailed criteria for the composition, quality, and testing methods of these substances. The standard establishes uniform requirements to ensure consistency in production and application. It defines the permissible limits for impurities and sets guidelines for performance evaluation. The document also includes procedures for sampling and analysis, ensuring that products meet defined standards. This standard is applicable to manufacturers, suppliers, and users of these dyes, supporting quality control and product reliability.