DefinitionA <CHEMICAL TOXICANT CATEGORY 3> is a <CHEMICAL TOXICANT> that is classified as 'very toxic - environment' in Shell DEP 01.00.01.30-Gen, or being a hydrocarbon liquid with a seal chamber vapour pressure higher than 500 kPa (abs) (73 psia) or being in a ight hydrocarbon service as defined in ISO 21049:2004, Clause 3.38)