News Details

On May 5, 2026, the U.S. Environmental Protection Agency (EPA) announced the availability of the final risk evaluation for 1,2-dichloroethane under the Toxic Substances Control Act (TSCA). The evaluation concluded that the chemical poses an unreasonable risk to human health, primarily due to workplace exposure affecting workers under multiple conditions of use.

Substance Background

1,2-Dichloroethane (CAS No. 107-06-2), also known as ethylene dichloride, is a volatile chlorinated chemical that is primarily used in the production of vinyl chloride. According to EPA, over 90 percent of produced 1,2-dichloroethane is converted into vinyl chloride for the manufacture of polyvinyl chloride (PVC). The substance is produced in large quantities in the United States and may also be present in certain imported goods and small amounts are used in laboratories.

Key Findings

EPA identified unreasonable risks associated with 15 workplace conditions involving the use of 1,2-dichloroethane. However, the agency did not identify any such risks to consumers, the general population, or the environment under the evaluated conditions of use.

Next Regulatory Steps

Following the final risk evaluation, EPA will initiate risk management actions under TSCA to address worker exposure and reduce the identified health risks. The assessment was conducted using the best available scientific data and a weight-of-evidence approach.

Regulatory Significance

This action highlights EPA’s continued focus on chemical safety and occupational health under TSCA. Industries handling 1,2-dichloroethane may face future compliance measures aimed at strengthening worker protection standards.