Defining hazardous substances
A 'hazardous substance' is any substance that has one or more of the following intrinsic 'hazardous properties':
Ability to oxidise (accelerate a fire)
Human toxicity (acute or chronic)
Corrosiveness (to human tissue or metal)
Ecotoxicity (with or without bioaccumulation)
Capacity, on contact with air or water, to develop one or more of the above properties.