单词 | phosphorus pentoxide |
释义 | > as lemmasphosphorus pentoxide phosphorus pentoxide n. Chemistry phosphorus( v) oxide, P4O10 (originally assigned the formula P2O5), a white deliquescent solid formed when phosphorus burns in air, used as a dehydrating agent. ΚΠ 1867 Proc. Royal Soc. 16 223 Phosphorus pentoxide used in the last drying-tube was found invariably to be carried over into the boat containing the substance. 1963 Times 6 Nov. 19/1 Substantially more phosphorus pentoxide was used in compound fertilizers, consumption of which was high. 1999 Engineering Nov. 42/1 When burnt in the engine, the product leaves a residue of phosphorus pentoxide, which acts as a lubricant for the valves, guides and seats. < as lemmas |
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