# The Planning (Hazardous Substances) Regulations 1992, Part A: TOXIC SUBSTANCES


Column 1
Column 2
Hazardous substances
Controlled quantities
(in tonnes, unless otherwise stated)
1 Acetone Cyanohydrin (2-Cyanopropan-2-ol)
200
2 Acrolein (2-Propenal)
200
3 Acrylonitrile
20
4 Allyl alcohol (2-Propen-l-ol)
200
5 Allylamine
200
6 Ammonia (anhydrous or as solution containing more than 50% by weight of ammonia)
100
7 Arsenic trioxide, Arsenious (III) acid and salts
1
8 Arsine (Arsenic hydride)
1
9 Bromine
40
10 Carbon disulphide
20
11 Chlorine
10
12 Ethylene dibromide (1,2-Dibromoethane)
50
13 Ethyleneimine
50
14 Formaldehyde (>90%)
50
15 Hydrogen chloride (liquefied gas)
250
16 Hydrogen cyanide
20
17 Hydrogen fluoride
10
18 Hydrogen selenide
1
19 Hydrogen sulphide
50
20 Methyl bromide (Bromoethane)
200
21 Methyl isocyanate
150 kilograms
22 Nickel tetracarbonyl
1
23 Nitrogen oxides
50
24 Oxygen difluoride
1
25 Pentaborane
1
26 Phosgene
750 kilograms
27 Phosphine (Hydrogen phosphide)
1
28 Propyleneimine
50
29 Selenium hexafluoride
1
30 Stibine (Antimony hydride)
1
31 Sulphur dioxide
20
32 Sulphur trioxide (including the sulphur trioxide content in oleum)
15
33 Tellurium hexafluoride
1
34 2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD)
1 kilogram
35 Tetraethyl lead
50
36 Tetramethyl lead
50

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Source: https://www.legislation.gov.uk/uksi/1992/656/schedule/1/part/A (the official version)
Page: https://openlegislation.uk/planning-hazardous-substances-regulations-1992/schedule-1/part-A
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.