… - - Lithopone and other pigments and preparations based on zinc sulphide 3206.49 - - Other 3206.50 - Inorganic products … basic lead carbonate; oxides of iron, lead, chromium or zinc; sulphides of zinc or mercury; lead chromate ( Chapter …
… as a reducing agent in organic synthesis, etc. (2) Zinc sulphide (ZnS). Artificial zinc sulphide is obtained in the hydrated form by precipitating an alkali zincate by means of sodium sulphide. White paste or powder …
… etc. (C) GERMANIUM Germanium is extracted from residues of zinc manufacture, from the ore germanite (copper … (F) HAFNIUM Hafnium is extracted from the same ores as zirconium (zircon, etc.) and has properties very similar to …
… two hetero-atoms : (a) One oxygen, one nitrogen : Oxazine group (heading 29.34)* . (b) One sulphur, one nitrogen : Thiazine group (heading 29.34)* . (c) Two nitrogen : … yellowish crystals; used as a flotation agent for lead and zinc ores, and as an antiparasitic and anticryptogamic …
… paper‑making (preparation of certain chemical pulps); as a sizing material in the textile industry; in medicine as a … sulphate (brochantite) is excluded ( heading 26.03 ). (7) Zinc sulphate (ZnSO 4 .7H 2 O). Obtained by the action of …
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