GB/T 42357-2023 "Non-water-soluble dyes—Determination of purity—Liquid chromatography method" is applicable to the determination of the purity of disperse dye raw materials, non-water-soluble fluorescent whitening agents, and solvent dyes. It specifies the use of liquid chromatography with peak area normalization for purity calculation, clarifies the requirements for equipment, sample preparation, testing procedures, and result processing, and references GB/T 6682 and GB/T 8170 to standardize testing conditions and data processing, ensuring accurate and comparable results.
This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
| Status | Active | ||
|---|---|---|---|
| CCS | G55 | ICS | 71.100.01;87.060.10 |
| Release Date | 2023-03-17 00:00:00 | Implementation Date | 2023-10-01 00:00:00 |