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

• Priority Substances List Assessment Report
• Order Adding Toxic Substances to Schedule 1 to the Canadian Environmental Protection Act, 1999
• CEPA 1999 Schedule 1 - List of Toxic Substances - This substance has been added to the List of Toxic Substances. It is entering or may enter the environment in a quantity or concentration or under conditions that:
  c) constitute or may constitute a danger in Canada to human life or health.
• Full life-cycle management of the substance (Track 2) under the Toxic Substances Management Policy

---

Source(s)

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

• Industrial, Commercial and Consumer Products

---

Strategic Options Report

Click on the following link to view strategies and actions recommended to manage risks associated with the substance:

• Strategic Options for the management of toxic substances: Benzidine and 3,3-Dichlorobenzidine

---

Risk Management Tool(s)

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

• Prohibition of Certain Toxic Substances Regulations, 2012

---

Risk Management Supporting Activities

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

• Schedule 3: Information Related to the Use of Certain Toxic Substances in a Laboratory for Analysis, in Scientific Research or as a Laboratory Analytical Standard
• Schedule 4: Information to be Contained in an Application for a Permit
• Schedule 5: Information Relating to the Manufacture or Import of Toxic Substances or the Import of a Product Containing It

---

Consultation

Consultation (past and present) on the substance:

• Proposed Regulations Respecting the Total, Partial and Conditional Prohibition of Certain Toxic Substances (archived consultation document)

---

Other Information

• Prohibition of Certain Toxic Substances Regulations, 2005 (Repealed)
• Prohibition of Certain Toxic Substances Regulations, 2003 (Repealed)
• Prohibition of Certain Toxic Substances Regulations (Repealed)

---

Contact

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

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