Mercury
Approximately half of the mercury currently cycling through our environment originates from human activities (such as the combustion of coal and the incineration of waste), while the other half can be attributed to natural sources and processes. Despite mercury's toxic nature, humans take advantage of its unique properties to produce various consumer products, including fluorescent lights and dental amalgam. When mercury from natural and anthropogenic sources is released to the atmosphere, it can be transported around the globe on wind currents, being deposited onto land and reemitted into the atmosphere several times along the way. Mercury can exist in several forms depending on the surrounding conditions. The most toxic form, known as methylmercury, can bioaccumulate in fish and may pose a potential health threat to fish-eating animals and humans.
For more information on this substance, please visit the Chemical Substances website.
For information on Canada's international engagement on this substance, please visit:
- Protocol to the United Nations Economic Commission for Europe (UNECE) Convention on Long-Range Transboundary Air Pollution (LRTAP) on Heavy Metals
- Rotterdam Convention
CAS (Chemical Abstract Service) registry number: 7439-97-6
Risk Assessment
- United Nations Environment Programme Global Mercury Assessment report
- Human Health Risk Assessment of Mercury in Fish and Health Benefits of Fish Consumption
- CEPA 1999 Schedule 1 - List of Toxic Substances - This substance has been added to the List of Toxic Substances.
- 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):
- Base Metals Smelting Sector
- Chemical Industry
- Electric Power Generation Sector (Fossil Fuel)
- Environmental Emergency
- Incineration
- Industrial, Commercial and Consumer Products
Risk Management Strategy
Click on the following link to view strategies and actions recommended to manage risks associated with the substance:
Risk Management Tool(s)
Tool(s) developed to manage risks associated with the substance:
- Proposed Regulations Respecting Products Containing Certain Substances Listed in Schedule 1 to the Canadian Environmental Protection Act, 1999
- Final Notice: Pollution Prevention Planning in Respect of Mercury Releases from Dental Amalgam Waste
- Proposed Notice Regarding Pollution Prevention Planning in Respect of Mercury Releases from Dental Amalgam Waste
- Notice requiring the preparation and implementation of pollution prevention plans in respect of mercury releases from mercury switches in end-of-life vehicles processed by steel mills
- Chlor-Alkali Mercury Release Regulations
- Agreement respecting the Canada-wide Standard for Mercury Emissions from Coal-fired Electric Power Generation Plants
- Canada-Wide Standard for Mercury from Coal-fired Electric Power Generation Sector
- Data Analysis in Support of the Development of Canada-wide Standard for Mercury Emissions from Coal-fired Electric Power Generation Plants
- Canada-Wide Standards for Mercury Emissions
- Canada-Wide Standard for Mercury-Containing Lamps
- Canada-Wide Standard for Mercury for Dental Amalgam Waste
- Environmental Emergency Regulations
- Export and Import of Hazardous Wastes Regulations
- Pollution Prevention Planning Notices - Dental Amalgam Waste
- Pollution Prevention Planning Notices - Mercury Releases from Mercury Switches in End-of-Life Vehicles
- Pollution Prevention Planning Notices - Base Metals Smelters and Refineries and Zinc Plants
Consultation
Consultation (past and present) on the substance:
- Proposed Risk Management Instruments for Mercury-Containing Products
- Risk Management Strategy For Mercury-Containing Products
Other Information
- Mercury and the Environment - Information Centre
- North American Commission for Environmental Cooperation Web Site
- National Pollutant Release Inventory (NPRI) - Information Centre
- Great Lakes Binational Toxics Strategy
- United Nations Environmental Programme - Mercury Programme
- Canadian Atmospheric Mercury Measurement Network (CAMNet)
- Health Canada - Mercury Questions and Answers
- Canadian Consumer Battery Baseline Study - Final Report
Contact
Email address: GR-RM@ec.gc.ca
Fax number: (819) 994-0007
Chemicals Management Division
Environment Canada
Fontaine Building
200 Sacré Coeur Blvd.
Gatineau, Quebec
K1A 0H3
- Date Modified: