EPA Seeks Peer Reviewers for Two Phthalates Used as Plasticizers

Last week, EPA issued a call for nominations of peer reviewers for the draft risk evaluations of di-isodecyl phthalate (DIDP) and di-isononyl phthalate (DINP), two phthalates that the agency says are mainly used as plasticizers in polyvinyl chloride in consumer, commercial, and industrial applications. EPA previously decided to concurrently conduct the risk evaluations for DIDP and DINP due to the chemicals’ similarities, which include similar physical properties and exposures to humans and the environment. These risk evaluations were requested by the chemicals’ manufacturers, and EPA is conducting them using the process described under the Toxic Substances Control Act (TSCA).

EPA seeks scientists with expertise in areas such as health and ecological risk assessment as well as ingestion exposure. Individuals with expertise related to general exposure and indoor air would also fit this role. Those who are selected will serve as ad-hoc reviewers and assist EPA’s Science Advisory Committee on Chemicals during the peer review of the draft risk evaluations for the two phthalates. According to the agency, the peer review will inform its final risk evaluations and risk management decisions for these chemicals under TSCA.

The peer review of the draft risk evaluations of DIDP and DINP is scheduled for this summer. Nominations of potential peer reviewers are due by April 1. Further details are available in EPA’s news release.