The placing· on the market of an industrial chemical which the manufacturer, -
importer or distributor knows or suspe~ts is "dangerous" requires them to examine its
intrinsic properties in order to assess whethe~ it is "dangerous" according to the
Directive. If the chemical is qualified as "dangerous", it has to be placed into one or
several classes· of danger, such as "flammable", "toxic" or "dangerous to the
environment". The Directive currently covers 15 classes of danger.