The Popular Chemical Dictionary a Compendious Encyclopdia
The Popular Chemical Dictionary a Compendious Encyclopdia
Charles Thomas Kingzett
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PHOSPHINE See Phosphorus. PHOSPHINES (Organic) Feebly basic compounds prepared from phosphoretted hydrogen (phosphine) (PH 3 ) by the substitution of hydrogen with alkyl radicals for example, triethyl phosphine P(C 2 H 5 ) 3 . They correspond closely to the amines in composition. PHOSPHITES See Phosphorus. PHOSPHOR BRONZE An alloy with a low coefficient of friction, used as a substitute for bronze and gun-metal in gearings, bearings, wire ropes, etc. , composed of copper and tin fluxed with a v...ariable quantity (up to i per cent. ) of phosphorus, which is generally added in the form of copper phosphide or tin phosphide. PHOSPHORETTED HYDROGEN or PHOSPHINE See Phos- phorus, p. 377. PHOSPHORIC ACID See Phosphorus. PHOSPHORITE (Rock Phosphate of Calcium) A variety of apatite. PHOSPHORUS (P) and its Compounds Atomic weight, 31 ; melting-point, 44 C. This element does not occur in nature in its free state, but abounds in combination with calcium and oxygen in the seeds of plants and in soils, its presence in the latter being derived from the disintegration of rocks.
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