Benzidine and benzidine dihydrochloride

Benzidine has been used primarily as an intermediate in the manufacture of dyes and pigments. It is not produced in Canada, and although it may have been imported in small amounts between 1980 and 1987, there no longer appears to be any commercial activity in Canada involving this substance. However, there are limited essential applications of benzidine related to analytical procedures in the health care sector.

CAS (Chemical Abstracts Service) registry number: 92-87-5 and 531-85-1

Risk Assessment


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

Strategic Options Report

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Risk Management Tool(s)

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

Risk Management Supporting Activities

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Consultation (past and present) on the substance:

Other Information


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Fax : 819- 994-0007

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