This standard is an analytical method standard specifically designed for determining the residual chloride ion content in chlorinated polyvinyl chloride (CPVC) resin. Its core principle is potentiometric titration: after dissolving the sample, an automatic potentiometric titrator is used with silver nitrate standard solution as the titrant. The titration endpoint is precisely determined by monitoring the abrupt change (inflection point) in the solution potential during the titration process, thereby calculating the residual chlorine content. This method is primarily used for quality control of the residual chlorine index, which critically affects product purity and processing performance.
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 | G32 | ICS | 83.080.20 |
| Release Date | 2017-11-01 00:00:00 | Implementation Date | 2018-05-01 00:00:00 |
