Toxic substances list: gaseous ammonia

Gaseous ammonia originates from both anthropogenic and natural sources. Anthropogenic sources include industry, transportation and agriculture, whereas natural sources include the waste product of animals, fish and microbial mechanisms. Gaseous ammonia has been identified as one of the principal precursors to fine particulate matter.

CAS (Chemical Abstract Service) registry number: 7664-41-7

Risk Assessment


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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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