| Ammonium nitrate (as described in Note 1 to this Part) | 350 | 2,500 |
| Ammonium nitrate (as described in Note 2 to 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 its salts, Bis(chloromethyl) ether, Chloromethyl methyl ether, Dimethylcarbamoyl chloride, Dimethylnitrosomine, Hexamethylphosphoric triamide, 2-Naphthylamine and/or its salts, 1,3 Propanesultone and 4-nitrodiphenyl | 0·001 | 0·001 |
| Automotive petrol and other petroleum spirits | 5,000 | 50,000 |
