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2.24 Class 5 has two divisions:
(a) Class 5.1, Oxidizing Substances, which consists of substances that yield oxygen thereby causing or contributing to the combustion of other material, as determined in accordance with section 2.5.2 of Chapter 2.5 of the UN Recommendations; and
(b) Class 5.2, Organic Peroxides, which consists of substances that
(i) are thermally unstable organic compounds that contain oxygen in the bivalent “-O-O-” structure, as determined in accordance with section 2.5.3 of Chapter 2.5 of the UN Recommendations,
(ii) are liable to undergo exothermic self-accelerating decomposition,
(iii) have one or more of the following characteristics:
(A) they are liable to explosive decomposition,
(B) they burn rapidly,
(C) they are sensitive to impact or friction,
(D) they react dangerously with other substances, or
(E) they cause damage to the eyes, or
(iv) are in the list of currently assigned organic peroxides in section 2.5.3.2.4 of Chapter 2.5 of the UN Recommendations.
SOR/2017-137, s. 23(E)