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The Control of Major Accident Hazards Regulations 1999
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PART 2Named Substances
Where a substance or group of substances listed in this Part also falls within a category of Part 3, the qualifying quantities set out in this Part must be used.
| Column 1 | Column 2 | Column 3 |
|---|---|---|
| Dangerous substances | Quantity in tonnes | |
| Ammonium nitrate (as described in Note 1 of this Part) | 350 | 2,500 |
| Ammonium nitrate (as described in Note 2 of this Part) | 1,250 | 5,000 |
| Arsenic pentoxide, arsenic (V) acid and/or salts | 1 | 2 |
| Arsenic trioxide, arsenious (III) acid and/or salts | 0.1 | 0.1 |
| Bromine | 20 | 100 |
| Chlorine | 10 | 25 |
| Nickel compounds in inhalable powder form (nickel monoxide, nickel dioxide, nickel sulphide, trinickel disulphide, dinickel trioxide) | 1 | 1 |
| Ethyleneimine | 10 | 20 |
| Fluorine | 10 | 20 |
| Formaldehyde (concentration =>90%) | 5 | 50 |
| Hydrogen | 5 | 50 |
| Hydrogen chloride (liquefied gas) | 25 | 250 |
| Lead alkyls | 5 | 50 |
| Liquefied extremely flammable gases (including LPG) and natural gas (whether liquefied or not) | 50 | 200 |
| Acetylene | 5 | 50 |
| Ethylene oxide | 5 | 50 |
| Propylene oxide | 5 | 50 |
| Methanol | 500 | 5,000 |
| 4, 4-Methylenebis (2-chloraniline) and/or salts, in powder form | 0.01 | 0.01 |
| Methylisocyanate | 0.15 | 0.15 |
| Oxygen | 200 | 2,000 |
| Toluene diisocyanate | 10 | 100 |
| Carbonyl dichloride (phosgene) | 0.3 | 0.75 |
| Arsenic trihydride (arsine) | 0.2 | 1 |
| Phosphorus trihydride (phosphine) | 0.2 | 1 |
| Sulphur dichloride | 1 | 1 |
| Sulphur trioxide | 15 | 75 |
| Polychlorodibenzofurans and polychlorodibenzodioxins (including TCDD), calculated in TCDD equivalent | 0.001 | 0.001 |
| The following CARCINOGENS: | ||
| 4-Aminobiphenyl and/or its salts, Benzidine and/or salts, Bis(chloromethyl) ether, Chloromethyl methyl ether, Dimethylcarbamoyl chloride, Dimethylnitrosomine, Hexamethylphosphoric triamide, 2-Naphthylamine and/or salts, 1,3 Propanesultone and 4-nitrodiphenyl | 0.001 | 0.001 |
| Automotive petrol and other petroleum spirits | 5,000 | 50,000 |
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