GB/T 7139 - 2023 Determination of chlorine content of vinyl chloride homopolymers and copolymers in focused plastics. It stipulates a unified and standardized determination method, which is suitable for related plastic products. Detailed description of the determination principle, the accuracy and specifications of the required instruments and equipment are required, and the preparatory steps of the sample are clarified. Through rigorous processes, accurate determination of chlorine content provides key data for plastic production enterprises to control product mass and adjust production process, and helps downstream enterprises to select suitable plastic raw materials according to chlorine content. Promote the standardization and high-mass development of the plastics industry.
| Status | Active |
|---|---|
| CCS | G31 | ICS | 83.080.20 |
| Release Date | 2023-08-06 00:00:00 | Implementation Date | 2024-03-01 00:00:00 |