1 (1) For the purposes of paragraphs 25(c) and 29(c) of these Regulations, a substance or stuffing material is toxic for humans in all of the following cases:
(a) its acute oral LD50 value for rat is 5 g or less per kg of body weight;
(b) its acute dermal LD50 value for rabbit is 2 g or less per kg of body weight; and
(c) its LC50 value for a one-hour exposure, determined using rats, is 20,000 ppm by volume of gas or vapour or less, or 200 mg/L by volume of mist or dust or less, if gas, vapour, mist or dust is likely to be encountered when the substance is used in a reasonably foreseeable manner.
(2) LD50 and LC50 values are to be determined in accordance with good scientific practices.
(3) to (5) [Repealed, SOR/2016-302, s. 7]
2 and 3 [Repealed, SOR/2016-302, s. 8]
- SOR/2016-302, ss. 7, 8
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