Dibenzofuran Quickview (CASRN 132-64-9)

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

Chronic Health Hazard Assessments for Noncarcinogenic Effects

Reference Dose for Chronic Oral Exposure (RfD)

Not Assessed under the IRIS Program.

Top of page

---

Reference Concentration for Chronic Inhalation Exposure (RfC)

Not Assessed under the IRIS Program.

Top of page

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.