Division 3.10.2 Classification criteria for substances

Substances known to cause human aspiration toxicity hazards or to be regarded as if they cause human aspiration toxicity hazard

A substance is classified in Category 1:

1. (a)

   based on reliable and good quality human evidence

   or

2. (b)

   if it is a hydrocarbon and has a kinematic viscosity of 20,5 mm²/s or less, measured at 40 ^oC.