Workplace Hazardous Materials Information System (WHMIS)

Workplace Hazardous Materials Bureau
Health Canada
269 Laurier Avenue West, 7th floor (4903E)
Ottawa, Ontario
K1A 0K9

Telephone: 1-855-407-2665
Teletypewriter: 1-800-465-7735 (Service Canada)

For the purpose of making a medical diagnosis or rendering medical treatment to a person in an emergency, medical practitioners may contact Health Canada to request the chemical identity of hazardous ingredients for workplace hazardous products that have been granted an exemption from disclosing trade secret information in the product Safety Data Sheet (SDS). These products are identified by a Hazardous Materials Information Review Act (HMIRA) Registry Number (RN) in the SDS and/or label.

Medical practitioners may call Health Canada at 343-550-2606 during regular business hours, from 8:00 am to 4:00 pm, Eastern Time.

Note: it is mandatory for Canadian suppliers to release this information upon request under the same circumstances under the Hazardous Products Regulations.

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