Cyanide, free

CASRN 57-12-5

As of September 28, 2010, the assessment summary for cyanide, free is included in the hydrogen cyanide and cyanide salts assessment summary. The RfD for cyanide, free is presented in section I.A.3 of the hydrogen cyanide and cyanide salts IRIS Summary.

Health Hazard Assessments for Effects Other than Cancer


Reference Dose for Oral Exposure (RfD) (PDF) (27 pp, 243 K) last updated: 09/28/2010

RfD (mg/kg-day) System Basis PoD Composite UF Confidence
6.3 x10-4 Decreased cauda epididymis weight in male #344/N rats. The RfD for cyanide, free is presented in section 1.A.3 of the hydrogen cyanide and cyanide salts IRIS Summary. : x10
mg/kg-day
3000
MF:
Low/Medium
x10 : x10

MF:
x10 : x10

MF:

Reference Concentration for Inhalation Exposure (RfC) (PDF) (27 pp, 243 K)
Not assessed under the IRIS Program.

Cancer Assessment


Weight of Evidence for Cancer (PDF) (27 pp, 243 K) last updated: 03/01/1991

WOE Characterization Framework for WOE Characterization
D (Not classifiable as to human carcinogenicity) Guidelines for Carcinogen Risk Assessment (US EPA, 1986)
Basis:
  • Pertinent data regarding carcinogenicity have not been located in the available literature.
  • This may be a synopsis of the full weight-of-evidence narrative.

Quantitative Estimate of Carcinogenic Risk from Oral Exposure (PDF) (27 pp, 243 K)

Not assessed under the IRIS Program.

Quantitative Estimate of Carcinogenic Risk from Inhalation Exposure (PDF) (27 pp, 243 K)

Not assessed under the IRIS Program.

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