… with additives (e.g., graphite, molybdenum disulphide, talc, carbon blacks, calcium or other metallic soaps, pitch, or rust, oxidation, … greases or oils. (3) Mixtures of powdered graphite, talc, mica, bentonite or aluminium with oils, fatty …
… articles, especially tyres, or from waste or scrap, of vulcanised rubber, by softening (“devulcanising”) the rubber and removing some of the unwanted …
… acid, methanol, acetone, a little furfuraldehyde and allyl alcohol. This heading also covers vegetable pitch of all … odour usually containing 70 to 90 % methanol (methyl alcohol) with varying proportions of acetone and other … 20 %), as well as other impurities (methyl acetate, higher alcohols, tarry substances, etc.). Certain types of wood …
… (HF). Obtained by the action of sulphuric acid on natural calcium fluoride (fluorite) or on cryolite. It is purified … (particularly iron pyrites), or by roasting natural calcium sulphate (e.g., anhydrite) with clay and coke. It is …
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