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 f1Man-made mineral fibre — 5 — — 2-Methoxyethanol CH3OCH2CH2OH 5 16 — — 2-Methoxyethyl acetate CH3COOCH2CH2OCH3 5 24 — — Rubber process dust — 8 — — f2Rubber 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 f3Vinyl chloride CH2=CHCl 7 — — — Vinylidene chloride CH2=CCl2 10 40 — — Wood dust (hard wood) — 5 — —
Annotations
Footnotes
- f1
-
In addition to the maximum exposure limit specified above man-made mineral fibre is also subject to a maximum exposure limit of 2 fibres ml−1, 8-hour TWA, when measured or calculated by a method approved by the Health and Safety Commission.
- f2
-
Limit relates to cyclohexane soluble material.
- f3
-
In addition to the maximum exposure limit specified above vinyl chloride is also subject to an overriding annual maximum exposure limit of 3 ppm