Skip to main content
U.S. flag

An official website of the United States government

Here’s how you know

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

HTTPS

Secure .gov websites use HTTPS
A lock ( Lock A locked padlock ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

  • Environmental Topics
  • Laws & Regulations
  • Report a Violation
  • About EPA
IRIS
Contact Us

Pentabromodiphenyl ether

CASRN 32534-81-9 | DTXSID2024246

  • IRIS Summary (PDF) (9 pp, 96 K)

On this page:

  • Key IRIS
    Values
  • Chemical
    Documents
  • Other EPA
    Information

Noncancer Assessment

Reference Dose for Oral Exposure (RfD) (PDF) (9 pp, 96 K) Last Updated: 03/31/1987

System RfD (mg/kg-day) Basis PoD Composite UF Confidence
Hepatic 2 x 10 -3 Induction of hepatic enzymes NOAEL : 1.77
mg/kg-day
1000 Low

Reference Concentration for Inhalation Exposure (RfC) (PDF) (9 pp, 96 K)

Not assessed under the IRIS Program.

Cancer Assessment

Weight of Evidence for Cancer (PDF) (9 pp, 96 K) Last Updated: 08/01/1990

WOE Characterization Framework for WOE Characterization
D (Not classifiable as to human carcinogenicity) Guidelines for Carcinogen Risk Assessment (U.S. EPA, 1986)
Basis:
  • No human data and animal data available.
  • This may be a synopsis of the full weight-of-evidence narrative.

Quantitative Estimate of Carcinogenic Risk from Oral Exposure (PDF) (9 pp, 96 K)

Not assessed under the IRIS Program.

Quantitative Estimate of Carcinogenic Risk from Inhalation Exposure (PDF) (9 pp, 96 K)

Not assessed under the IRIS Program.

Chemical Documents

Jun 2008: IRIS Toxicological Review of Pentabromodiphenyl Ether (Final Report) (Report)

Dec 2006: IRIS TOXICOLOGICAL REVIEW OF PENTABROMODIPHENYL ETHER (EXTERNAL REVIEW DRAFT) (Report)

Other EPA Information

Additional EPA toxicity information may be available by visiting the following sites:
  • Human Health Benchmarks for Pesticides (HHBP). This database provides human health benchmarks for pesticides that may be present in drinking water.
  • Office of Pesticide Programs Pesticide Chemical Search. This database provides links to health effects information and registration status for pesticides.
  • Chemistry Dashboard. This database provides information on chemical structures, experimental and predicted physicochemical, and toxicity data.

Related Links

  • EPA Chemicals Dashboard - Pentabromodiphenyl ether
  • eChemPortal - Pentabromodiphenyl ether

Critical Effects

Hepatic
Hepatic

Chemical Structure

Pentabromodiphenyl ether

Synonyms

  • Benzene, 1,1'-oxybis-, pentabromo deriv.
  • DE 71
  • Pentabromodiphenyl ether
  • 32534-81-9
  • IRIS Home
  • About IRIS
  • IRIS Recent Additions
  • IRIS Calendar
  • IRIS Assessments
  • Advanced Search
  • IRIS Program Materials
Contact Us to ask a question, provide feedback, or report a problem.
United States Environmental Protection Agency

Discover.

  • Accessibility Statement
  • Budget & Performance
  • Contracting
  • EPA www Web Snapshots
  • Grants
  • No FEAR Act Data
  • Privacy
  • Privacy and Security Notice

Connect.

  • Data.gov
  • Inspector General
  • Jobs
  • Newsroom
  • Open Government
  • Regulations.gov
  • Subscribe
  • USA.gov
  • White House

Ask.

  • Contact EPA
  • EPA Disclaimers
  • Hotlines
  • FOIA Requests
  • Frequent Questions

Follow.