Toxic substances list: 3,3’-Dichlorobenzidine

The substance 3,3'-dichlorobenzidine is not produced in Canada, but amounts of up to approximately 100 tonnes are imported each year. It is used in Canada primarily for the production of pigments for printing inks, textiles, paints, plastics and crayons.

CAS (Chemical Abstract Service) registry number: 91-94-1

Risk Assessment


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

Strategic Options Report

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Other Information


Substances Management Information Line
Chemicals Management Plan
Gatineau, QC K1A 0H3
Telephone: 1-800-567-1999 (in Canada) or 819-938-3232
Fax: 819-938-3231

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