Annex VI of the CLP Regulation contains a list of hazardous substances with their classification and labelling. Substances in this list have a harmonised classification.
Hazard and exposure catalogues contain both possible hazards as well as measures which can be taken to minimise same. These catalogues are provided by various trade associations.
All substances, mixtures and products which can endanger the health and safety of employees in any way are considered to be hazardous substances.