… by living cells; they have the property of causing and regulating specific chemical reactions inside or outside … The cofactor may be either a metal ion (e.g., copper in ascorbate oxidase, zinc in human placental alkaline phosphatase) or a complex organic molecule called a coenzyme …
… fluoride (HF). Obtained by the action of sulphuric acid on natural calcium fluoride (fluorite) or on cryolite. It is … liquid (boiling point 18/20 °C); it fumes in a humid atmosphere. In the anhydrous state and in concentrated … or less highly concentrated, gives various hydrates. It attacks the skin. Used in analyses. (C) COMPOUNDS OF BROMINE …
… compounds (+)*. - Acyclic monoamines and their derivatives; salts thereof : 2921.11 - - Methylamine, di- or … from ammonia by replacing one, two or three hydrogen atoms by one, two or three alkyl or aryl radicals R (methyl, …
… (+). - Waste and scrap of primary cells, primary batteries and electric accumulators; spent primary cells, … electric accumulators, mercury-switches, glass from cathode ray tubes or other activated glass, or electrical or …
… whether for farm or industrial purposes, used in the treatment of milk or for converting it into other dairy … lid of the milk pail, acts on the teat‑cups by alternating atmospheric pressure with a comparative vacuum between the …
… (a) Sodium sulphide (Na 2 S). Prepared by reducing sodium sulphate by means of coal. Either anhydrous, in whitish masses or plates (concentrated or melted sulphide), soluble in water, sulphating in the air, or in hydrated crystals (with …
… Sub-Chapter I HYDROCARBONS AND THEIR HALOGENATED, SULPHONATED, NITRATED OR NITROSATED DERIVATIVES 29.01 … oils. The basic hydrocarbon is methane (CH 4 ) with one atom of carbon. Methane and also propane (C 3 H 8 ) with three atoms of carbon are, however, classified in heading 27.11 …
… audio‑frequency electric amplifiers of all kinds presented separately, regardless of the particular purpose for which such apparatus may be designed (e.g., telephone microphones, …
… halide oxides, and sulphides of metals (see the General Explanatory Note to sub‑Chapter I) or of the ammonium ion … with an irritating odour, lachrymatory. Fumes in a humid atmosphere and decomposes on contact with water. Mainly used … white fumes (hydrogen chloride (HCl)) in the presence of atmospheric moisture. Decomposes in water with formation of …
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