Draft IDLH Values for Nitrogen Dioxide, Other Chemicals Available from NIOSH

Published May 17, 2017

NIOSH requests technical review of draft immediately dangerous to life or health (IDLH) values for four chemicals: acetonitrile, chloroacetonitrile, methacrylonitrile, and nitrogen dioxide. The agency has also published draft documents that provide the scientific rationale behind the derivation of the IDLH values. Each of these “IDLH value profiles” summarizes the health hazards of acute exposures to high airborne concentrations of a chemical and discusses the rationale for the chemical’s proposed IDLH value.

NIOSH asks reviewers to consider whether the IDLH value profiles clearly outline the health hazards associated with acute exposures to each chemical and whether the rationale and logic behind the IDLH value derivation is clearly explained. The agency also requests feedback on whether the documents are organized appropriately, the conclusions are supported by the data, and the included tables are clear and appropriate.

The comment period for these documents closes on June 19, 2017. See the Federal Register notice to learn about submitting comments.

For more information on IDLH values, visit the NIOSH website.