Toxic substances list: nitric oxide

Nitric oxide originates from both anthropogenic and natural sources. The main anthropogenic sources are from combustion in transportation, industry and the electric power generation sectors, whereas emissions from natural sources are mainly from forest fires, lightening and soil microbial activity. Nitrogen oxides have been identified as one of the principal precursors to ground-level ozone and fine particulate matter.

CAS (Chemical Abstract Service) registry number: 10102-43-9

Risk Assessment

• Scientific Assessment Reports for Nitrogen Oxides
• Order Adding Nitric Oxide and Nitrogen Dioxide to Schedule 1 of the Canadian Environmental Protection Act, 1999 July 2, 2003
• 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):

• Electric Power Generation Sector (Fossil Fuel)
• Environmental Emergency
• Vehicles, Engines and Fuels

Risk Management Strategy

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

• Interim Plan 2001 on Particulate Matter and Ozone

Risk Management Tool(s)

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

• Environmental Emergency Regulations
• New Source Emission Guidelines for Thermal Electricity Generation, 2003-01-04
• Canada-wide Standards for Particulate Matter (PM) and Ozone (PDF; 38 KB)
• Environmental Performance Agreement between Her Majesty the Queen in Right of Canada, as represented by the Minister of the Environment, and Her Majesty the Queen in Right of Canada, as represented by the Minister of Industry, and the Automotive Parts Manufacturers' Association, a non-profit organization, and the Participating Member Companies
• National Framework for Petroleum Refinery Emission Reductions
• On-Road Vehicle and Engine Emission Regulations
• Off-Road Small Spark-Ignition Engine Emission Regulations
• Off-Road Compression-Ignition Engine Emission Regulations
• Proposed Regulations Amending the On-Road Vehicle and Engine Emissions Regulations
• Sulphur in Diesel Fuel Regulations
• Regulations amending the sulphur in diesel fuel regulations
• Sulphur in Gasoline Regulation

Consultation

Consultation (past and present) on the substance:

• Federal Agenda on Cleaner Vehicles, Engines and Fuels (archived consultation document (PDF; 1454 KB)
• Preliminary Consultation on a Discussion Draft of the Off-Road Compression-Ignition Engine Emission Regulations (archived consultation document)
• Federal Agenda for the Reduction of VOCs from Consumer and Commercial Products

Other Information

• Clean Air - Information Centre
• An Assessment Of Tropospheric Ozone Pollution
• Acid Rain - Information Centre
• Particulate Matter Assessment for Policy Makers: A NARSTO Assessment
• Clean Air in Canada: 2003 Progress Report on Particulate Matter and Ozone
• Volatile Organic Compounds in Consumer and Commercial Products - Information Centre
• Criteria Air Contaminants Emission Summaries
• Precursor Contributions to Ambient Fine Particulate Matter in Canada
• National Pollutant Release Inventory (NPRI) - Information Centre

Contact

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
E-mail: eccc.substances.eccc@canada.ca

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