Hazardous Products Regulations

Marginal note:Exclusions

• 7.12.1 (1) The following liquids or solids need not be classified in any category of this hazard class:

  • (a) those that have a chemical structure that does not contain metals or metalloids;

  • (b) those that have been shown, through accumulated experience in production or handling, not to react with water; and

  • (c) those that are soluble in water to form a stable mixture.

• Marginal note:Categories

  (2) A liquid or solid which, in contact with water, emits flammable gases is classified in a category of this hazard class, based on results from testing performed in accordance with test N.5 of sub-section 33.5.4 of Part III of the Manual of Tests and Criteria, in accordance with the following table:

  	Column 1	Column 2
  Item	Category	Criteria
  1	Substances and Mixtures Which, in Contact with Water, Emit Flammable Gases — Category 1	A liquid or solid that (a) reacts with water at ambient temperature and produces a gas that is liable to ignite spontaneously; (b) reacts with water at ambient temperature such that the rate of evolution of flammable gas is ≥ 10 l/kg of liquid or solid over any one minute; or (c) reacts with water at ambient temperature to ignite spontaneously in any step of the test procedure
  2	Substances and Mixtures Which, in Contact with Water, Emit Flammable Gases — Category 2	A liquid or solid that reacts with water at ambient temperature such that the maximum rate of evolution of flammable gas is ≥ 20 l/kg of liquid or solid per hour
  3	Substances and Mixtures Which, in Contact with Water, Emit Flammable Gases — Category 3	A liquid or solid that reacts with water at ambient temperature such that the maximum rate of evolution of flammable gas is > 1 l/kg of liquid or solid per hour