This standard specifies a method for determining the water-soluble matter content in rubber compounding agents—precipitated hydrated silica using the conductivity method. The core principle is based on the characteristic that electrolyte ions from water-soluble substances significantly affect the electrical conductivity of aqueous solutions. By measuring the conductivity of the sample's aqueous extract under specific conditions using a conductivity meter and comparing it with the conductivity value of a standard potassium chloride solution, the mass fraction of water-soluble matter can be calculated. This method is relatively simple to operate and serves as an important testing means for evaluating the purity and performance of the product.
| Status | Active | ||
|---|---|---|---|
| CCS | G49 | ICS | 83.040.20 |
| Release Date | 2017-11-01 00:00:00 | Implementation Date | 2018-05-01 00:00:00 |
