# Regulation (EC) No 1272/2008 of the European Parliament and of the Council of 16 December 2008 on classification, labelling and packaging of substances and mixtures, amending and repealing Directives 67/548/EEC and 1999/45/EC, and amending Regulation (EC) No 1907/2006 (Text with EEA relevance), Division 4.1.3.1

Extent: E+W+S+N.I.

The classification system for mixtures covers all classification categories which are used for substances, i.e. categories Acute 1 and Chronic 1 to 4. In order to make use of all available data for purposes of classifying the aquatic environmental hazards of the mixture, the following is applied where appropriate:
The ‘ relevant components ’ of a mixture are those which are classified ‘ Acute 1 ’ or ‘ Chronic 1 ’ and present in a concentration of 0,1 % (w/w) or greater, and those which are classified ‘ Chronic 2 ’ , ‘ Chronic 3 ’ or ‘ Chronic 4 ’ and present in a concentration of 1 % (w/w) or greater, unless there is a presumption (such as in the case of highly toxic components (see section 4.1.3.5.5.5)) that a component present in a lower concentration can still be relevant for classifying the mixture for aquatic environmental hazards. Generally, for substances classified as ‘ Acute 1 ’ or ‘ Chronic 1 ’ the concentration to be taken into account is (0,1/M) %. (For explanation M-factor see section 4.1.3.5.5.5.)

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Source: https://www.legislation.gov.uk/eur/2008/1272/annex/I/division/4/division/4.1/division/4.1.3/division/4.1.3.1 (the official version)
Page: https://openlegislation.uk/eu-regulation-2008-1272/annex-I/division-4/division-4.1/division-4.1.3/division-4.1.3.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.