Skip to Main Navigation
Skip to Page Content
COVID-19 is an emerging, rapidly evolving situation.

Get the latest public health information from CDC and research information from NIH.

U.S. flag

An official website of the United States government

Dot gov

The .gov means it's official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you're on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Share This:
https://ntp.niehs.nih.gov/go/hfr

NTP Review of Halogenated Flame Retardants

chair burning

Substance Overview

Halogenated flame retardants encompass a large group of bromine or chlorine-containing chemicals that all share a similar function (i.e., fire retardation). Apart from containing one or more halogens, these chemicals can significantly differ in their physical, structural, and chemical properties.

Status: Cancer hazard evaluation for potential listing in the Report on Carcinogens (RoC)

Primary Uses or Exposures

  • Halogenated flame retardants have been applied to numerous products, including furniture, mattresses, carpets, electronic devices, building and construction materials, and transportation products.
  • Exposure to halogenated flame retardants can occur through inhalation, ingestion, and dermal routes.
  • Halogenated flame retardants are widely detected in human biological sampling due to continued exposure to contaminated product, their persistence in the environment, long half-lives in humans, and an expanded list of replacement flame retardant chemicals.
  • Certain occupations, including firefighting, manufacturing, construction, and service industries, may be exposed to higher concentrations of halogenated flame retardants than the general population.

Documents

Documents for Selected Wood Smoke
Date Document
Oct 7, 2015 Federal Register notice requesting public comment on nominated substances (PDF HTML)

Note on Accessibility: Persons with disabilities or using assistive technology may find some documents are not fully accessible. For assistance, email us or use our contact form and identify the documents/pages for which access is required. We will assist you in accessing the content of these files. NIEHS has helpful information on accessibility.