Basic Search

Marginal note:Definitions

• 1 (1) The following definitions apply in these Regulations.

  flash point

  flash point  means the lowest temperature, corrected to the standard pressure of 101.3 kPa, at which the application of an ignition source causes the vapours of a liquid to ignite. (point d’éclair)

  initial boiling point

  initial boiling point  means the temperature of a liquid at which its vapour pressure is equal to the standard pressure of 101.3 kPa, i.e., the temperature at which the first gas bubble appears. (point d’ébullition initial)

  SADT

  SADT or self-accelerating decomposition temperature means the lowest temperature at which self-accelerating decomposition occurs. (TDAA ou température de décomposition autoaccélérée)

[...]

Marginal note:Exclusions

• [...]

• (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

[...]

Marginal note:Exclusions — aerosols

• [...]

• (3) A gas under pressure is classified in a category of this hazard class in accordance with the following table:

  	Column 1	Column 2
  Item	Category	Criteria
  1	Gases Under Pressure — Compressed Gas	A gas that when packaged under pressure is entirely gaseous at -50°C, including all gases with a critical temperature ≤ -50°C
  2	Gases Under Pressure — Liquefied Gas	A gas that when packaged under pressure is partially liquid at temperatures > -50°C
  3	Gases Under Pressure — Refrigerated Liquefied Gas	A gas that when packaged is partially liquid because of its low temperature

[...]

7.5 The following definitions apply in this Subpart.

critical temperature

critical temperature means the temperature above which a pure gas cannot be liquefied, regardless of the degree of compression. (température critique)