CORROSIVES |
CORROSIVES |
Substances are included in Class 8, Corrosives, if they
(a) are known to cause full thickness destruction of human skin, that is, skin lesions that are permanent and destroy all layers of the outer skin through to the internal tissues;
(b) cause full thickness skin destruction, as determined in accordance with the OECD Guidelines; or
(c) do not cause full thickness destruction of skin, but exhibit a corrosion rate that exceeds 6.25 mm per year at a test temperature of 55°C, as determined in accordance with the ASTM Corrosion Test.
2.42 Divisions
There are no divisions for Class 8.
2.43 Packing Groups
(1) When a substance is known to be included in Class 8, Corrosives, and that knowledge is supported by documentary evidence published in technical journals or government publications and testing is not done to determine the packing group, the substance must be included in Packing Group I.
(2) Class 8, Corrosives, are included in one of the following packing groups:
(a) Packing Group I, if
(i) they are known to cause full thickness destruction of human skin, that is, skin lesions that are permanent and that destroy all layers of the outer skin through to the internal tissues; or
(ii) full thickness destruction of intact skin tissue occurs within an observation period up to 60 minutes after an exposure time of 3 minutes or less, as determined in accordance with the OECD Guidelines;
(b) Packing Group II, if full thickness destruction of skin occurs within an observation period up to 14 days after an exposure time of more than 3 minutes but not more than 60 minutes, as determined in accordance with the OECD Guidelines; or
(c) Packing Group III, if
(i) full thickness destruction of intact skin tissue occurs within an observation period up to 14 days after an exposure time of more than 60 minutes but not more than 4 hours, as determined in accordance with the OECD Guidelines, or
(ii) they show a corrosion rate that exceeds 6.25 mm per year at a test temperature of 55°C on steel surfaces, type P235 [ISO 9328-2] or a similar type or on aluminum surfaces, non-clad types 7075-T6 or AZ5GU-T6, as determined in accordance with the ASTM Corrosion Test.
