IRIS Toxicological Review of Hydrogen Cyanide (External Review Draft)
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|Jan 1987||EPA posted an assessment for cyanide salts (RfD only).|
|Sep 1994||EPA posted an assessment for hydrogen cyanide (RfC only).|
|Jun 2004||The IRIS reassessment of hydrogen cyanide was initiated in 2004.|
|Sep 2009||EPA released an external review draft of the assessment for public review and comment.|
|Oct 2009||EPA announced a public listening session that was held on October 27, 2009 in a September 23, 2009 Federal Register Notice.|
|Nov 2009||EPA announced the details of an external peer review workshop to be held on December 14, 2009 in a November 10, 2009 Federal Register Notice.|
|Jan 2010||EPA released the comments from the public comment period and external review workshop.|