IRIS Toxicological Review of n-Butanol (External Review Draft)
Federal Register Notices
EPA has released the Toxicological Review of n-Butanol (External Review Draft) for public review and comment. EPA has reopened the public comment period, announced in the November 16, 2011, Federal Register Notice until December 7, 2011.
EPA is conducting a peer review of the scientific basis supporting the human health hazard and dose-response assessment of n-butanol that will appear in the Integrated Risk Information System (IRIS) database.
U.S. EPA. IRIS Toxicological Review of n-Butanol (External Review Draft). U.S. Environmental Protection Agency, Washington, DC, EPA/635/R-11/081A, 2011.
The draft Toxicological Review of n-Butanol provides scientific support and rationale for the hazard and dose-response assessment pertaining to chronic exposure to n-butanol. n-Butanol is widely used as an organic solvent and is an intermediate in the manufacture of other organic chemicals such as acetates, acrylates and glycol ethers. n-Butanol is also a natural component of many foods and formed during the fermentation of carbohydrates.
| Mar 1987 | A RfD was posted for n-butanol to the IRIS Database. |
| Mar 1991 | The cancer assessment for n-butanol was posted to the IRIS Database. |
| Jun 2011 | EPA initiated the interagency science consultation on the draft Toxicological Review of n-Butanol. |
| Sep 2011 | EPA released the external review draft for public review and comment. EPA concurrently released the interagency science consultation draft toxicological review and charge, and interagency comments with EPA's response. |
Following external peer review and public comment, the assessment will be revised taking into consideration the comments received. It will then undergo a final internal review by EPA and other federal agencies and White House offices. After completing the review it will be posted to the IRIS database.
Comments on the assessment may be submitted and reviewed using the e-Government Regulations.gov Web site. From the site, select “Environmental Protection Agency” and the keyword “EPA-HQ-ORD-2011-0671" (for the docket ID) to comment on this report.
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.
- IRIS Toxicological Review of n-Butanol (External Review Draft) (PDF) (136 pp, 904 KB, about PDF)
- Charge to External Peer Reviewers (PDF) (3 pp, 29 KB, about PDF)
Comments on the assessment may be submitted and reviewed using the Docket ID EPA-HQ-ORD-2011-0671