3.1.: Substances

The chemical identity of the main constituent of the substance shall be provided by providing at least the product identifier or one of the other means of identification given in subsection 1.1.
The chemical identity of any impurity, stabilising additive, or individual constituent other than the main constituent, which is itself classified and which contributes to the classification of the substance shall be provided as follows:
(a) the product identifier in accordance with Article 18(2) of Regulation (EC) No 1272/2008;
(b) if the product identifier is not available, one of the other names (usual name, trade name, abbreviation) or identification numbers.
Suppliers of substances may choose to list in addition all constituents including non-classified ones.
This subsection may also be used to provide information on multi-constituent substances.