Hazardous Products Regulations — 7.3.1
Exclusions 7.3.1 (1) Any product that is classified in a category of the hazard class “Chemicals Under Pressure” must not be classified in any category of this hazard class. Categories (2) An aerosol is classified in a category of this hazard class in accordance with the following table: TABLE Column 1 Column 2 Item Category Criteria 1 Aerosols — Category 1 An aerosol dispenser that (a) contains ≥ 85.0% flammable components, by mass, and generates an aerosol that has a heat of combustion ≥ 30 kJ/g; (b) generates a spray aerosol that has an ignition distance ≥ 75 cm, based on test results from the ignition distance test for spray aerosols performed in accordance with sub-section 31.4 of Part III of the Manual of Tests and Criteria; or (c) generates a foam aerosol that has, based on test results from the aerosol foam flammability test performed in accordance with sub-section 31.6 of Part III of the Manual of Tests and Criteria, either (i) a flame height ≥ 20 cm and a flame duration ≥ 2 s, or (ii) a flame height ≥ 4 cm and a flame duration ≥ 7 s 2 Aerosols — Category 2 An aerosol dispenser that generates (a) a spray aerosol that does not meet the criteria for the category “Aerosols — Category 1” and that has (i) a heat of combustion ≥ 20 kJ/g, (ii) an ignition distance ≥ 15 cm, based on test results from the ignition distance test for spray aerosols performed in accordance with sub-section 31.4 of Part III of the Manual of Tests and Criteria, (iii) a time equivalent ≤ 300 s/m³, based on test results from the enclosed space ignition test performed in accordance with sub-section 31.5 of Part III of the Manual of Tests and Criteria, or (iv) a deflagration density ≤ 300 g/m³, based on test results from the enclosed space ignition test performed in accordance with sub-section 31.5 of Part III of the Manual of Tests and Criteria; or (b) a foam aerosol that does not meet the criteria for the category “Aerosols — Category 1” and that has a flame height ≥ 4 cm and a flame duration ≥ 2 s, based on test results from the aerosol foam flammability test performed in accordance with sub-section 31.6 of Part III of the Manual of Tests and Criteria 3 Aerosols — Category 3 An aerosol dispenser that (a) contains ≤ 1.0% flammable components, by mass, and generates an aerosol that has a heat of combustion <20 kJ/g; (b) generates a spray aerosol that does not meet the criteria for the category “Aerosols — Category 1” or “Aerosols – Category 2” and that has (i) a time equivalent > 300 s/m³, based on test results from the enclosed space ignition test performed in accordance with sub-section 31.5 of Part III of the Manual of Tests and Criteria, or (ii) a deflagration density > 300 g/m³, based on test results from the enclosed space ignition test performed in accordance with sub-section 31.5 of Part III of the Manual of Tests and Criteria; or (c) generates a foam aerosol that does not meet the criteria for the category “Aerosols – Category 1” or “Aerosols – Category 2” and that has, based on test results from the aerosol foam flammability test performed in accordance with sub-section 31.6 of Part III of the Manual of Tests and Criteria, a flame height < 4 cm or a flame duration < 2 s Default category (3) A product that contains flammable components in an aerosol dispenser for which there are no test results in accordance with subparagraph 2.1(a)(i) and referred to in subsection (2) must be classified in the category “Aerosols – Category 1”, unless the product contains flammable components at a concentration less than or equal to 1.0% and has a heat of combustion less than 20 kJ/g. SOR/2022-272, s. 23