# Directive 2009/48/EC of the European Parliament and of the Council of 18 June 2009 on the safety of toys (Text with EEA relevance), Division 4: Toys and, in particular, chemical games and toys, must not contain as such substances or mixtures:

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

(a) which, when mixed together, may explode through chemical reaction or through heating;
(b) which may explode when mixed with oxidizing substances; or
(c) which contain volatile components which are flammable in air and liable to form a flammable or explosive vapour/air mixture.

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Source: https://www.legislation.gov.uk/eudr/2009/48/annex/II/division/II/division/4 (the official version)
Page: https://openlegislation.uk/eu-directive-2009-48/annex-II/division-II/division-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.