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The Town and Country Planning (Hazardous Substances) (Scotland) Regulations 1993

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PART ATOXIC SUBSTANCES

(1)(2)
Hazardous substancesControlled 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 oxide

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.  Stibine (Antimony hydride)

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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