['Dangerous goods']
['Classification - Dangerous Goods']
07/17/2024
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2.17 To determine the LC50 of a mixture of gases when the LC50 of each of the gases is known, use 5,000 mL/m3 as the toxic limit and,
(a) if the mixture contains only one gas with an LC50 less than or equal to the toxic limit (called “Gas A”), use the following calculation:
or
(b) if the mixture contains more than one gas with an LC50 less than or equal to the toxic limit (called “Gas A”, “Gas B”, etc.),
(i) determine the contributing number (CN) of each of the gases with an LC50 less than or equal to the toxic limit using the formula
(ii) combine the contributing numbers (CN) of each gas with an LC50 less than or equal to the toxic limit using the formula
and
(iii) obtain the LC50 of the mixture by dividing 1 by the number T (LC50 of the mixture = 1 / T).
['Dangerous goods']
['Classification - Dangerous Goods']