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:
the product identifier in accordance with Article 18(2) of Regulation (EC) No 1272/2008;
if the product identifier is not available, one of the other names (usual name, trade name, abbreviation) or identification numbers.
The specific concentration limit, the M-factor and the acute toxicity estimate for substances included in Part 3 of Annex VI to Regulation (EC) No 1272/2008 or determined in accordance with Annex I to that Regulation shall be indicated, if available.
If the substance is registered and it covers a nanoform, the particle characteristics that specify the nanoform, as described in Annex VI, shall be indicated.
If the substance is not registered, but the safety data sheet covers nanoforms, the particle characteristics of which have impact on the safety of the substance, those characteristics shall be indicated.
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.