五氧化二砷 Arsenic pentoxide
（重定向自Arsenic anhydride）
五氧化二砷为砷(+5)的氧化物，化学式As2O5。与三氧化二砷等其他砷化合物同样具有较高毒性。通常为带玻璃光泽的白色固体。
Arsenic anhydride
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Arsenic pentoxide 五氧化二砷
（重定向自Arsenic anhydride）
Arsenic pentoxide is the inorganic compound with the formula As2O5. This glassy, white, deliquescent solid is relatively unstable, consistent with the rarity of the As(V) oxidation state. More common, and far more important commercially, is arsenic(III) oxide (As2O3). All arsenic compounds are highly toxic and thus find only limited commercial applications.
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