# The Control of Substances Hazardous to Health (Amendment) Regulations 1990 S.I. 1990/2026 · made 8 October 1990 Made under: Health and Safety at Work etc. Act 1974 PDFs: Printed copy https://openlegislation.uk/control-of-substances-hazardous-to-health-amendment-regulations-1990/pdf/uksi_19902026_en.pdf ## Introductory text HEALTH AND SAFETY Made 8th October 1990 Laid before Parliament 25th October 1990 Coming into force 1st January 1991 The Secretary of State, in exercise of the powers conferred on him by section 15(1) of the Health and Safety at Work etc. Act 1974 (“the 1974 Act”) and of all other powers enabling him in that behalf and for the purpose of giving effect without modifications to proposals submitted to him by the Health and Safety Commission under section 11(2)(d) of the 1974 Act after the carrying out by the said Commission of consultations in accordance with section 50(3) of that Act, hereby makes the following Regulations:— ## 1 Citation, commencement and interpretation (1) These Regulations may be cited as the Control of Substances Hazardous to Health (Amendment) Regulations 1990 and shall come into force on 1st January 1991. (2) In these regulations, unless the context otherwise requires, “the principal Regulations” means the Control of Substances Hazardous to Health Regulations 1988. ## 2 Amendment to the principal Regulations For Schedule 1 to the principal Regulations there shall be substituted the Schedule set out in the Schedule to these Regulations. ## Signature Signed by order of the Secretary of State. Eric Forth Parliamentary Under Secretary of State, Department of Employment 8th October 1990 ## Schedule THE SCHEDULE TO BE SUBSTITUTED AS SCHEDULE 1 TO THE PRINCIPAL REGULATIONS SCHEDULE 1 LIST OF SUBSTANCES ASSIGNED TO MAXIMUM EXPOSURE LIMITS Regulations 2(1), 7(4)and 12(2) The maximum exposure limits of the dusts included in the list below refer to the total inhalable dust fraction, unless otherwise stated. Reference periods Long-term maximum exposure limit (8-hour TW A reference period) Short-term maximum exposure limit (10-minute reference period) Substance Formula ppm mg m−3 ppm mg m−3 Acrylamide CH2=CHCONH2 — 0.3 — — Acrylonitrile CH2=CHCN 2 4 — — Arsenic & compounds except arsine (as As) As — 0.1 — — Benzene C6H7sub6; 5 15 — — Buta-1,3-diene CH2=CHCH=CH2 10 22 — — 2-Butoxyethanol CH4H9OCH2CH2OH 25 120 — — Cadmium & cadmium compounds, except cadmium oxide fume and cadmium sulphide pigments (as Cd) Cd — 0.05 — — Cadmium oxide fume (as Cd) CdO — 0.05 — 0.05 Cadmium sulphide pigments (respirable dust as Cd) CdS — 0.04 — — Carbon disulphide CS2 10 30 — — 1,2-Dibromoethane (Ethyl dibromide) BrCG2CH2Br 0.5 4 — — Dichloromethane CH2Cl2 100 350 — — 2,2'-Dichloro-4,4'-methylene dianiline (MbOCA) CH2(C6H3ClNH2)2 — 0.005 — — 2-Ethoxyethanol C2H5OCH2CH2OH 10 37 — — 2-Ethoxyethyl acetate C2H5OCH2CH2OOCCH3 10 54 — — Ethylene oxide CH2CH2O 5 10 — — Formaldehyde HCHO 2 2.5 2 2.5 Hydrogen cyanide HCN — — 10 10 Isocyanates, all (as-NCO) — 0.02 — 0.07 Man-made mineral fibre — 5 — — 2-Methoxyethanol CH3OCH2CH2OH 5 16 — — 2-Methoxyethyl acetate CH3COOCH2CH2OCH3 5 24 — — Rubber process dust — 8 — — Rubber fume — 0.6 — — Styrene C6H5CH=CH2 100 420 250 1050 1,1,1-Trichloroethane CH3CCl3 350 1900 450 2450 Trichloroethylene CCl2=CHCl 100 535 150 802 Vinyl chloride CH2=CHCl 7 — — — Vinylidene chloride CH2=CCl2 10 40 — — Wood dust (hard wood) — 5 — — ## Explanatory note (This note is not part of the Regulations) 1 These Regulations amend the Control of Substances Hazardous to Health Regulations 1988 (“the principal Regulations”) by substituting for Schedule 1 to the principal Regulations the Schedule set out in the Schedule to these Regulations. Schedule 1 specifies maximum exposure limits for certain substances which are hazardous to health. 2 The Schedule introduces new maximum exposure limits for benzene, acrylamide, and an additional maximum exposure limit for man made mineral fibres. Amendments are also made to the existing maximum exposure limits for ethylene dibromide, arsenic and its compounds and for rubber fume. One maximum exposure limit, that for 1-methoxy-2-propanol, has been removed from the Schedule. --- Source: https://www.legislation.gov.uk/uksi/1990/2026 (the official version) Page: https://openlegislation.uk/control-of-substances-hazardous-to-health-amendment-regulations-1990 Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.