Polychlorinated Dibenzofurans

Polychlorinated dibenzofurans (furans) are highly persistent compounds with a strong affinity for sediments and a high potential for accumulating in biological tissues. They have been found in all compartments of the ecosystem, including: air, water, soil, sediments, animals and foods. Dioxins and furans enter the environment as complex mixtures from four major sources: commercial chemicals (eg. pentachlorophenol); incineration; pulp and paper mills that use chlorine bleaching; and both accidental fires and spills involving polychlorinated biphenyls (PCBs, which contain principally furan contaminants).

For information on Canada's international engagement on this substance, please visit:

There is more than one CAS number that applies to this group of substances.

Risk Assessment


This substance is entering the environment from the following source(s):

Risk Management Tool(s)

Tool(s) developed to manage risks associated with the substance:


Consultation (past and present) on the substance:

Other Information


Email address: GR-RM@ec.gc.ca
Fax number: (819) 994-0007

Chemicals Management Division
Environment Canada
Fontaine Building
200 Sacré Coeur Blvd.
Gatineau, Quebec
K1A 0H3

Date modified: