1 Alkali metals; lithium, sodium, potassium; alkali metal compounds; lithium chloride, lithium sulphate, lithium carbonate, lithium bicarbonate, lithium phosphate, lithium nitrate, lithium hydroxide, sodium chloride, sodium sulphate, sodium carbonate, sodium bicarbonate, sodium phosphate, sodium nitrate, sodium hydroxide, potassium chloride, potassium sulphate, potassium carbonate, potassium bicarbonate, potassium phosphate, potassium nitrate, potassium hydroxide; industrial chemicals; hydrochloric acid, sulfuric acid, phosphoric acid, nitric acid; ion-exchange membranes (term considered too vague by the International Bureau - Rule 13 (2) (b) of the Regulations); catalyst supports; catalysts for oxidation processes; catalysts for reduction processes