出典:Wiktionary
phosphorus pentoxide (uncountable)
出典:Wikipedia
出典:『Wikipedia』 (2011/08/10 12:56 UTC 版)
Phosphorus pentoxide is a chemical compound with molecular formula P4O10 (with its common name derived from its empirical formula, P2O5). This white crystalline solid is the anhydride of phosphoric acid. It is a powerful desiccant.