… hardened rubber, plastics, resin impregnated paper or paperboard, asbestos‑cement or mica). These fittings may be … may be special electrically insulating varnish, paper or paperboard, rubber, plastics, etc. Metal tubing simply …
… combined content by weight of 7 % or more, 0.6 % or more of carbon and 3 to 6 % of chromium. (10) Non‑distorting tool … by weight 12 % or more of chromium and 2 % or more of carbon. (11) Other alloy tool steels. (12) Permanent magnet …
… action of sulphur dioxide on an aqueous solution of sodium carbonate. Colourless powder or crystals, rather unstable, … a solution of the hydrogen sulphite by means of sodium carbonate. Anhydrous (in powder) or crystallised (with 7 H 2 …
… whether or not coloured . Paraffin wax is a hydrocarbon wax extracted from certain distillates of … structure. Microcrystalline petroleum wax is also a hydrocarbon wax. It is extracted from petroleum residues or …
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