Notice
Request for Public Comment on the Draft Immediately Dangerous to Life or Health (IDLH) Value Document for Lewisite
Health and Human Services Department / Centers for Disease Control and Prevention
Federal Register summary (shortened to 600 characters)
The National Institute for Occupational Safety and Health (NIOSH) in the Centers for Disease Control and Prevention (CDC), an Operating Division of the Department of Health and Human Services (HHS), requests public comment on the draft Immediately Dangerous to Life or Health (IDLH) Value Profile document for the chemical lewisite (CAS# 541-25-3). NIOSH develops IDLH values for workplace chemical concentrations and conditions carrying immediate, unacceptable health risks. IDLH values are based on health effects considerations determined through a critical assessment of toxicology and human…
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- Document number
- 2026-05288
- Published
- Wed, Mar 18, 2026
- Comments close
- Mon, May 18, 2026Closed
- First on the line
- Oct 10, 2026, 10:00 PM