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IRIS Toxicological Review of 2-Hexanone (Interagency Science Discussion Draft)
Note: EPA has updated this document, but this version is provided as a courtesy to the public as a matter of public record.
Contact
- Karen A. Hammerstrom
- by phone at: 703-347-8642
- by email at: hammerstrom.karen@epa.gov
Notice
As per the May 21, 2009, IRIS proces, all comments received from federal agencies and White House offices on draft IRIS assessments will be made publicly available. Accordingly, interagency comments and the interagency draft of the 2-Hexanone IRIS assessment have been posted on this site.
On September 25, 2009, the IRIS Summary and Toxicological Review of 2-hexanone was finalized and loaded onto the IRIS database. The Toxicological Review of 2-hexanone was reviewed internally by EPA, by other federal agencies and White House Offices, by expert external peer reviewers, and by the public. In the new IRIS process, introduced by the EPA Administrator, all written comments on IRIS assessments submitted by other federal agencies and White House Offices will be made publicly available. Accordingly, interagency comments and the interagency draft of the 2-hexanone IRIS assessment are posted on this site.Background
The draft Toxicological Review of 2-hexanone provides scientific support and rationale for the hazard identification and dose-response assessment pertaining to chronic exposure to 2-hexanone. 2-Hexanone has been used as a solvent for lacquers, ink thinners, nitrocellulose, resins, oils, fats and waxes. The only U.S. producer of 2-hexanone, the Tennessee Eastman Company division of Eastman Kodak, discontinued its production of 2-hexanone in 1979 and sold its remaining reserves by 1981. Exposure to 2-hexanone is most likely to occur from living near or working in plants that make gas from coal, process oil shale, or produce wood pulp. People living near hazardous waste sites with 2-hexanone can also be exposed. This chemical has been found in at least 199 of 1,416 National Priority List Superfund sites identified by the EPA.
This assessment contains [the derivation of a chronic reference dose and a chronic reference concentration, as well as a cancer characterization.
This assessment contains [the derivation of a chronic reference dose and a chronic reference concentration, as well as a cancer characterization.
History/Chronology
| 2005 | EPA began developing the Toxicological Review of 2-hexanone. |
| Mar 2008 | EPA released an External Review Draft for public comment and review. |
| Apr 2008 | EPA announced the external peer review panel meeting. |
| Aug 2009 | EPA hosted an interagency science discussion on the draft IRIS Summary and Toxicological Review of 2-hexanone. These comments are provided on this web site. |
| Sep 2009 | EPA released the Final Toxicological Review (PDF) and accompanying 2-hexanone Summary to the IRIS Web site. |
Next Steps
The assessment has been finalized and loaded onto the IRIS database.
Downloads/Related Links
- Toxicological Review of 2-Hexanone (Interagency Science Discussion Draft) (PDF) (140 pp, 1 MB, about PDF)
- IRIS Summary for 2-Hexanone (Interagency Science Discussion Draft) (PDF) (14 pp, 169 KB, about PDF)
- OMB Comments for the IRIS Summary and Toxicological Review of 2-Hexanone (Interagency Science Discussion Drafts) (PDF) (1 pp, 22 KB, about PDF)
Related Link(s)
Citation
U.S. EPA. IRIS Toxicological Review of 2-Hexanone (Interagency Science Discussion Draft). U.S. Environmental Protection Agency, Washington, D.C., 2009.
