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


This substance is entering the environment from the following sources:

Risk Management Tools

Tools developed to manage risks associated with the substance:


Consultation (past and present) on the substance:

Other Information


Chemicals Management Division
Environment and Climate Change Canada
Gatineau, QC K1A 0H3


Substances Management Information Line:
Telephone: 1-800-567-1999 (in Canada) or 819-938-3232
Fax: 819-938-3231


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