In July, the U.S. Environmental Protection Agency (EPA) proposed to designate five chemicals as High-Priority Substances for risk evaluation under the Toxic Substances Control Act (TSCA) including vinyl chloride, primarily used in the manufacturing and processing of plastic materials such as polyvinyl chloride (PVC) pipe.
If EPA finalizes these designations as proposed, the agency would immediately move forward with the risk evaluation process. The five chemical substances EPA is proposing to designate as High-Priority Substances are:
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