Division 4.2

Production of inorganic chemicals, such as:

1. (a)

   gases, such as ammonia, chlorine or hydrogen chloride, fluorine or hydrogen fluoride, carbon oxides, sulphur compounds, nitrogen oxides, hydrogen, sulphur dioxide, carbonyl chloride;

2. (b)

   acids, such as chromic acid, hydrofluoric acid, phosphoric acid, nitric acid, hydrochloric acid, sulphuric acid, oleum, sulphurous acids;

3. (c)

   bases, such as ammonium hydroxide, potassium hydroxide, sodium hydroxide;

4. (d)

   salts, such as ammonium chloride, potassium chlorate, potassium carbonate, sodium carbonate, perborate, silver nitrate;

5. (e)

   non-metals, metal oxides or other inorganic compounds such as calcium carbide, silicon, silicon carbide.