Risk Evaluation for 1,1-Dichloroethane
EPA designated 1,1-dichloroethane as a high priority chemical in December 2019 and the chemical is currently undergoing risk evaluation.
On this page:
- Background on 1,1-Dichloroethane
- Uses of 1,1-Dichloroethane
- Recent Activities and Opportunities for Public Comment
Background on 1,1-Dichloroethane
1,1-dichloroethane (CASRN 75-34-3) is a colorless, oily liquid with a chloroform-like odor. The primary use of 1,1-dichloroethane is in organic chemical manufacturing. Information from the 2016 Chemical Data Reporting (CDR) for 1,1-dichloroethane indicates the reported production volume is between 100 million to one billion lbs/year.
In the final scope, EPA identified conditions of use associated with the manufacturing; processing; distribution in commerce; commercial use; and disposal of 1,1-dichloroethane, for example:
- In organic chemical and other chemical product and preparation manufacturing; and
- As a laboratory chemical.
The above listed conditions of use are ways that a person or the environment could be potentially exposed to this chemical. However, when conducting a risk evaluation, EPA also considers the hazards (i.e. health effects or environmental impacts) that could occur from coming in contact with a chemical.
In August 2020, EPA published a final scope document outlining the hazards, exposures, conditions of use, and the potentially exposed or susceptible subpopulations the agency expects to consider in its risk evaluation. The agency released the draft scope in April 2020 and took public comments on the draft document.
- Read the final scope of the risk evaluation for this chemical and EPA’s response to comments on the draft scope.
- View the docket for this chemical, EPA-HQ-OPPT-2018-0426 on www.regulations.gov.
As EPA continues to move through the risk evaluation process there will be additional opportunities for public comment, including a public comment period on the draft risk evaluation. In addition to public comment periods, EPA will continue to engage with stakeholders as it refines the risk evaluation and stakeholders should reach out to EPA via the staff contact to engage with the agency.