Toxic substances list: NDMA

There are no industrial or commercial uses of N-Nitrosodimethylamine (NDMA) in Canada. NDMA is released to the Canadian environment as a by-product and contaminant from various industries and from municipal wastewater treatment plants. Major releases of NDMA have been from the manufacture of pesticides, rubber tires, alkylamines and dyes. NDMA has also been detected in drinking water and in automobile exhaust. Sources of release of NDMA may occur across Canada, but releases have been quantified only in Ontario. NDMA may also form under natural conditions in air, water and soil as a result of chemical, photochemical and biological processes.

CAS (Chemical Abstracts Service) registry number: 62-75-9

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

Sources

This substance is entering the environment from the following sources:

• Industrial, Commercial and Consumer Products

Risk Management Tools

Tools developed to manage risks associated with the substance:

• Prohibition of Certain Toxic Substances Regulations, 2012

Consultation

Consultation (past and present) on the substance:

• Proposed Regulations Respecting the Total, Partial and Conditional Prohibition of Certain Toxic Substances, 31-10-2003 (archived consultation document)
• Consultation Notice: Proposed Risk Management Strategy for N-Nitrosodimethylamine (NDMA)

Other Information

• Prohibition of Certain Toxic Substances Regulations, 2005 (Repealed)