… crystals, hygroscopic and very soluble in water. Used as an oxidising agent in vat dyes; in organic synthesis; for … method as sodium nitrite, or by the action of sulphur dioxide on a mixture of calcium oxide and potassium nitrate. A … colourless, deliquescent. Used for preparing bismuth oxides or salts and certain varnishes. (b) Basic bismuth …
… decompose cold water; they deteriorate in air, forming hydroxides. (1) Lithium . This is the lightest (specific gravity … 1.9), which ignites on contact with air; the most readily oxidising metal; presented in sealed ampoules or in mineral …
… furnaces for zone melting and refining of silicon rods, oxidation furnaces for oxidizing the surface of wafers and diffusion furnaces for … and semiconductors on the finished device. They may include oxides and nitrides of the substrate surface, metals, and …
… bisulphite crystals”). Obtained from the hydrogen sulphite; oxidises rather rapidly, especially in a humid atmosphere. … dioxide on ammonia. Colourless crystals, soluble in water, oxidising in the air. Used in organic synthesis. (3) … (3) Calcium thiosulphate (CaS 2 O 3 .H 2 O). Prepared by oxidation of calcium sulphide. White crystalline powder, …
… (A) NITRIC ACID Nitric acid (HNO 3 ) is mainly obtained by oxidising ammonia in the presence of a catalyst (platinum, iron, chromium, bismuth or manganese oxides, etc.). Alternatively, nitrogen and oxygen may be directly combined in an electric‑arc furnace …
… They generally consist of suspensions of pigments (titanium oxide, zinc oxide, lithopone, etc.) stabilised by cellulose … chlorinated organic substances with antimony oxide or other oxides. (7) Lustring agents intended to produce lustre or … felting of animal fibres. They are often chlorinating or oxidising agents or specialised formulations of synthetic …
… articles essentially of wood. The heading includes : (1) Boxes of lacquered wood (of the Chinese or Japanese type); cases and boxes of wood, for knives, cutlery, scientific apparatus, …
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