EPA Home PageSuperfund Risk Assessment Home Page


Health Effects Assessment Summary (HEAST) for

Cyanogen Bromide

CAS: 000506-68-3


Summary of HEAST Information on-Line

Subchronic and Chronic Toxicity
Chronic [RfD]:IRIS
Subchronic [RfD]:on-Line
Notes/Comments:on-Line






Subchronic and Chronic Toxicity (Other than Carcinogenicity)

Subchronic [RfD]:
(see comment)
9E-2 mg/kg/day

Uncertainty Factor: 500

Route: Oral: diet

Target Organ / Critical Effect: Whole body / Decreased weight
Thyroid / Effects
Nerve / Myelin degeneration

Species Effect Level Dose Experiment Length
Rat NOAEL 44 mg/kg/day 2 years

References
1955 Howard J.W. and R.F. Hanzal. 1955. Chronic toxicity for rats of food treated with Hydrogen Cyanide. Agric Food Chem. 3: 325-329.
1987 U.S. EPA. 1987. RfD/RfC Work Group.

Subchronic [RfD] Comments: Calculated by analogy to free cyanide by correcting for differences in molecular weight. The chronic oral RfD was adopted as the subchronic oral [RfD].



[ Risk Assessment Home ]
[ EPA Home | OSWER Home | Superfund Home ]
[ Search EPA | Search Superfund | Whats New | Contact Us ]

Horizontal Rule
URL: http://risk.lsd.ornl.gov/epa/heast/heast_select.htm
This page was last updated on: March 1, 2000
Site maintained by: Office of Emergency and Remedial Response
Hofmann.Lee@epamail.epa.gov

Horizontal Rule