These Regulations, as respects Great Britain, implement EC Counsel and Commission Directives relative to classification, packaging and labelling of substances dangerous for supply, being a substance listed in Part I of the approved supply list; or any other substance which is in one or more of the categories of danger specified in column 1 of Schedule 1. The terms and expressions used in the Regulations are defined in regulation 2 and the scope of the Regulations is described in regulation 3. Regulation 4 defines and describes the approved supply list, which has been approved by the Health and Safety Commission for the purposes of classifying substances and preparations dangerous for supply. Regulation 5 describes the procedures for classifying substances and preparations dangerous for supply and regulation 6 describes the safety data sheets, which are required to be provided when dangerous substances or preparations are supplied. Regulation 7 requires that advertisements for substances which are dangerous for supply must refer to the hazards presented by the substance. Regulation 8 imposes requirements relating to the packaging of substances and preparations dangerous for supply and regulation 9 imposes requirements in respect of the particulars that must be shown on the labels for such substances and preparations. Special labelling requirements for certain preparations are imposed in regulation 10 and regulation 11 imposes requirements in respect of the methods of marking and labelling substances and preparations dangerous for supply.