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|Section2= |Section3= |Section4= |Section5= |Section7= |Section8= }} Phosphorus trioxide is the chemical compound with the molecular formula P4O6. Although it should properly be named tetraphosphorus hexoxide, the name phosphorus trioxide preceded the knowledge of the compound's molecular structure, and its usage continues today. This colorless solid is structurally related to adamantane. It is formally the anhydride of phosphorous acid, H3PO3, but cannot be obtained by the dehydration of the acid. It is a white, waxy, crystalline and highly toxic solid. == Preparation == It is obtained by the combustion of phosphorus in a limited supply of air at low temperature. :P4(s) + 3 O2(g) → P4O6(s) By-products include red phosphorus suboxide.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「phosphorus trioxide」の詳細全文を読む スポンサード リンク
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