… . It consists of an impure form of copper produced by smelting oxidised copper ores or impure copper scrap, … of an impure form of copper produced by blowing air through molten copper matte. During the conversion process, sulphur, …
… bismutite). Bismuth is white with a reddish tint, brittle, difficult to work and a bad conductor. It is used in … for pharmaceutical use. It forms fusible alloys (some melting below 100 °C) of which the following may fall in the …
… is, in fact, crude sulphide proper to heading 26.17 . (2) Smelting to produce impure antimony known as “singles” (regulus). (3) Further smelting to produce “star bowls” which, after refining, give …
… hydrazine or hydroxylamine themselves or their inorganic salts ( heading 28.25 ) but includes their organic … (1-carbamyl-2-phenylhydrazine). (23) Quaternary hydrazinium salts and bases . (24) Hydrazides of carboxylic acids . (25) …
… a clenched fist and with which blows are delivered. (3) Catapults designed for shooting at birds or pests. They may be in the form of a walking‑stick. Toy catapults are excluded ( heading 95.03 ). (4) Air guns, …
