Hazardous Products Regulations

Marginal note:Conversion from range to point estimate

• 8.1.7 (1) If a formula in section 8.1.5 or 8.1.6 is used, an acute toxicity point estimate must be determined, in accordance with the table to subsection (2), for each ingredient for which only that ingredient’s classification category or experimentally obtained acute toxicity range is available.

• Marginal note:More than one range

  (2) If the experimentally obtained acute toxicity range for an ingredient does not fall entirely within any of the ranges set out in column 2 of the following table, the converted acute toxicity point estimate for that ingredient for the purposes of column 3 is the lowest value of the experimentally obtained acute toxicity range.

  	Column 1	Column 2	Column 3
  Item	Exposure Routes	Classification Category and Associated Experimentally Obtained Acute Toxicity Range Minimum and Maximum Values	Converted Acute Toxicity Point Estimate
  1	Oral (mg/kg body weight)	0 < Category 1 ≤ 5 5 < Category 2 ≤ 50 50 < Category 3 ≤ 300 300 < Category 4 ≤ 2000	0.5 5 100 500
  2	Dermal (mg/kg body weight)	0 < Category 1 ≤ 50 50 < Category 2 ≤ 200 200 < Category 3 ≤ 1000 1000 < Category 4 ≤ 2000	5 50 300 1100
  3	Inhalation (gases) (ppmV)	0 < Category 1 ≤ 100 100 < Category 2 ≤ 500 500 < Category 3 ≤ 2500 2500 < Category 4 ≤ 20 000	10 100 700 4500
  4	Inhalation (vapours) (mg/l)	0 < Category 1 ≤ 0.5 0.5 < Category 2 ≤ 2.0 2.0 < Category 3 ≤ 10.0 10.0 < Category 4 ≤ 20.0	0.05 0.5 3 11
  5	Inhalation (dust/mist) (mg/l)	0 < Category 1 ≤ 0.05 0.05 < Category 2 ≤ 0.5 0.5 < Category 3 ≤ 1.0 1.0 < Category 4 ≤ 5.0	0.005 0.05 0.5 1.5