IRIS

Bentazon (Basagran)

CASRN 25057-89-0

  • IRIS Summary (PDF) (20 pp, 145 K)
  • Status: EPA announced in a 2004 Federal Register Notice that chemicals used as pesticides would not be re-assessed by the IRIS Program. This entry in the IRIS database is preserved at the request of EPA program and regional offices. Additional toxicological information may be found under "Other EPA Information."

Noncancer Assessment

Reference Dose for Oral Exposure (RfD) (PDF) (20 pp, 145 K) last updated: 03/02/1998

System RfD (mg/kg-day) Basis PoD Composite UF Confidence
Hematologic 3.0 x 10-2 Blood loss into the gastrointestinal tract; coagulation defect in male and female dogs NOAEL (ADJ): 3.2
mg/kg-day
100 Medium

 


Reference Concentration for Inhalation Exposure (RfC) (PDF) (20 pp, 145 K) last updated: 03/02/1998
Not assessed under the IRIS Program.

 

Cancer Assessment

Weight of Evidence for Cancer (PDF) (20 pp, 145 K) last updated: 03/02/1998

WOE Characterization Framework for WOE Characterization
E (Evidence of non-carcinogenicity for humans) Guidelines for Carcinogen Risk Assessment (U.S. EPA, 1986)
Not likely to be carcinogenic to humans Proposed Guidelines for Carcinogen Risk Assessment (U.S. EPA, 1996)
Basis:
  • Under EPA's 1986 Guidelines for Carcinogen Risk Assessment, Bentazon would be classified as evidence of non-carcinogenicity for humans, or a Group E chemical. Under EPA's proposed guidelines for carcinogen risk assessment (U.S. EPA, 1996), Bentazon would be characterized as not likely to be carcinogenic to humans by any route of exposure.
  • This may be a synopsis of the full weight-of-evidence narrative.

Quantitative Estimate of Carcinogenic Risk from Oral Exposure (PDF) (20 pp, 145 K)

Not assessed under the IRIS Program.

Quantitative Estimate of Carcinogenic Risk from Inhalation Exposure (PDF) (20 pp, 145 K)

Not assessed under the IRIS Program.

Additional EPA toxicity information may be available by visiting the following sites:

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