单词 | phosphorus pentoxide |
释义 | phosphorus pentoxide /pen tok"suyd, -sid/, Chem. a white, deliquescent, crystalline powder, P2O5, that, depending upon the amount of water it absorbs, forms orthophosphoric acid, metaphosphoric acid, or pyrophosphoric acid, produced by the burning of phosphorus in dry air: used in the preparation of phosphoric acids, as a drying and dehydrating agent, and in organic synthesis. Also called phosphoric anhydride. |
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