CASRN 79-34-5

IRIS Toxicological Review of 1,1,2,2-Tetrachloroethane (Interagency Science Discussion Draft)

Notice - This site contains archived material(s).

Archive disclaimer
Archived files are provided for reference purposes only. The file was current when produced, but is no longer maintained and may now be outdated. Persons with disabilities having difficulty accessing archived files may contact the NCEA Webmaster for assistance. Please use the contact form if you need additional assistance.


EPA is releasing the draft report, Toxicological Review of 1,1,2,2-Tetrachloroethane, that was distributed to Federal agencies and White House Offices for comment during the Science Discussion step of the IRIS Assessment Development Process. Comments received from other Federal agencies and White House Offices are provided below with external peer review panel comments.


U.S. EPA. IRIS Toxicological Review of 1,1,2,2-Tetrachloroethane (Interagency Science Discussion Draft). U.S. Environmental Protection Agency, Washington, DC, EPA/635/R-09/001D, 2010.


Norman Birchfield,  Ph:  703-347-0174,  Email:

Top of Page


The draft Toxicological Review of 1,1,2,2-Tetrachloroethane provides scientific support and rationale for the hazard and dose-response assessment pertaining to subchronic and chronic exposure to 1,1,2,2-tetrachloroethane. 1,1,2,2-Tetrachloroethane (1,1,2,2TCE; CASRN 79-34-5) is a synthetic halogenated hydrocarbon that is a colorless, nonflammable liquid at room temperature. The major use for 1,1,2,2-Tetrachloroethane was in the production of trichloroethylene, tetrachloroethylene, and 1,2-Dichloroethylene.


Date Description
Mar 1987EPA posted a 1,1,2,2-Tetrachloroethane carcinogenicity assessment.
Sep 2009EPA released an external review draft of the assessment for public review and comment.
Dec 2009EPA announced an external peer review workshop to be held on January 27, 2010 in a December 17, 2009 Federal Register Notice.
Feb 2010EPA released the comments from the external review workshop and the public comment period.
Aug 2010EPA hosted an interagency science discussion on the review of the draft Toxicological Review of 1,1,2,2-tetrachloroethane.
Sep 2010EPA released the final report and the interagency science discussion draft with comments.


Now that the interagency review draft has been completed and finalized, this assessment has been loaded into the IRIS Web site and Database.

Top of Page


This download(s) is distributed solely for the purpose of pre-dissemination peer review under applicable information quality guidelines. It has not been formally disseminated by EPA. It does not represent and should not be construed to represent any Agency determination or policy.

Top of Page