Reference Manual for the WHMIS Requirements of the Hazardous Products Act and Controlled Products Regulations

CPR Section 31 - Provision of Information

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31. Subject to the Hazardous Materials Information Review Act, a supplier who sells or imports a controlled product intended for use in a work place in Canada shall identify as soon as is practicable in the circumstances, on the request of an inspector, any person to whom a controlled product is sold or any user of a controlled product, the source of information for any toxicological data used in the preparation of any material safety data sheet that has been transmitted by the supplier to any person pursuant to paragraph 13(a) of the Act or has been obtained or prepared by the supplier pursuant to paragraph 14(a) of the Act.

Interpretation / Discussion of Section 31

Under paragraph 11(1)(b) of the Hazardous Materials Information Review Act, a supplier may claim an exemption from disclosing "the name of any toxicological study that identifies any ingredient of a controlled product." If a supplier does not have such an exemption and an inspector, purchaser or worker who uses a controlled product requests the source of information for toxicological data stated on an MSDS, the supplier must provide that information.