Dichlorodiphenyltrichloroethane was first registered as a pesticide under the Pest Control Products Act (PCPA) in the 1940s, and although it was never manufactured in Canada, it was widely used in pest control products until the 1960s. In response to increasing environmental and safety concerns, most uses of DDT in Canada were phased out by the mid-1970s. Registration of all uses of DDT was discontinued in 1985, with the understanding that existing stocks would be sold, used or disposed of by December 31, 1990. The sale or use of DDT in Canada today constitutes a violation of the PCPA.

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

CAS (Chemical Abstracts Service) registry number: 789-02-6 and 50-29-3.

Risk Assessment

Risk Management Tool(s)

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

Risk Management Supporting Activities

Activities supporting the development or implementation of the risk management tool(s):

Forms related to the Prohibition of Certain Toxic Substances Regulations, 2012:


Consultation (past and present) on the substance:

Other Information


Email : GR-RM@ec.gc.ca
Fax : 819-994-0007

Chemicals Management Division
Environment Canada
351 St. Joseph Blvd.
Gatineau, Quebec
K1A 0H3

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