GB/T 21876-2015 "Solvent dyes and dye intermediates—Determination of ash content" is applicable to the determination of the ash content in solvent dyes and dye intermediates. The method involves incinerating the sample in a muffle furnace at a specified temperature until constant weight is achieved. The mass of the sample before and after incineration is accurately weighed using an analytical balance, and the mass fraction of ash is calculated. The standard specifies requirements for sample quantity, incineration temperature, and holding time. The absolute difference between parallel determination results must comply with the precision requirements, providing a basis for assessing product purity.
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 | 87.060.10;71.100.01 |
| Release Date | 2015-05-15 00:00:00 | Implementation Date | 2015-12-01 00:00:00 |
