To ask the Secretary of State for Health if the production and use of (a) 2-Naphthylamine and its salts, (b) 4-Aminobiphenyl and its salts, (c) Benzidine and its salts and (d) 4-Nitrodiphenyl is permitted in Britain.

I have been asked to reply.Regulation 4 and schedule 2 of the Control of Substances Hazardous to Health Regulations 1988 (COSHH) prohibit the manufacture and use for all purposes, and the importation into the United Kingdom, of 4-aminodiphenyl, 4-nitrodiphenyl, benzidine, 2- naphthylamine, their salts and any substance containing any of these compounds in a total concentration exceeding 0.1 per cent.

To ask the Secretary of State for Health if he will publish in the Official Report a list of the carcinogenic substances that have already been classified by directive 67/548/EEC.

I have been asked to reply.The list of carcinogenic substances is included in part 1Al of the third edition of the "Authorised and Approved List—information approved for the classification, packaging and labelling of dangerous substances for supply and conveyance by road", published by the Health and Safety Commission. A copy of this is available from the House of Commons Library.