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Dibenzofuran Quickview (CASRN 132-64-9)

Health assessment information on a chemical substance is included in IRIS only after a comprehensive review of toxicity data by U.S. EPA health scientists from several Program Offices, Regional Offices, and the Office of Research and Development.

Disclaimer: This QuickView represents a snapshot of key information. We suggest that you read the IRIS Summary to put this information into complete context.

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Status of Data for Dibenzofuran

File First On-Line: 10/01/1990; Last Significant Revision: 10/01/1990

Category (section)
Status
Last Revised
Oral RfD Assessment No data
Inhalation RfC Assessment No data 05/01/1992
Carcinogenicity Assessment On-line 10/01/1990
Synonyms
  • 132-64-9
  • (1,1'-Biphenyl)-2,2'-diyl oxide
  • 2,2'-Biphenylene oxide
  • 2,2'-Biphenylylene oxide
  • Dibenzofuran
  • Dibenzo(b,d)furan
  • Diphenylene oxide
  • HSDB 2163
  • NSC 1245
Dibenzofuran Source Documents
Chronic Health Hazard Assessments for Noncarcinogenic Effects

Reference Dose for Chronic Oral Exposure (RfD)

Not Assessed under the IRIS Program.

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Reference Concentration for Chronic Inhalation Exposure (RfC)

Not Assessed under the IRIS Program.

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Carcinogenicity Assessment for Lifetime Exposure
  • Weight-of-Evidence Characterization
    • D (Not classifiable as to human carcinogenicity)
  • Weight-of-Evidence Narrative:
    • Based on no human data and no animal data for dibenzofuran alone.
    • This may be a synopsis of the full weight-of-evidence narrative. See IRIS Summary.

Quantitative Estimate of Carcinogenic Risk from Oral Exposure

  • Not Assessed under the IRIS Program.

Quantitative Estimate of Carcinogenic Risk from Inhalation Exposure

  • Not Assessed under the IRIS Program.

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