五氧化二磷(粵拼:ng5 joeng5 faa3 ji6 leon4,Phosphorus Pentoxide)係磷嘅氧化物,化學式P2O5,外觀係白色粉,溶得喺水。
十氧化四磷 | |
---|---|
別名 | 氧化磷(V) 磷酸酐 |
識別 | |
CAS號 | 1314-56-3 16752-60-6((P4O10)) |
PubChem | 14812 |
ChemSpider | 14128 |
SMILES | O=P13OP2(=O)OP(=O)(O1)OP(=O)(O2)O3 |
ChEBI | 37376 |
RTECS | TH3945000 |
性質 | |
化學式 | P4O10 |
摩爾質量 | 283.889 g·mol−1 |
外觀 | 白色粉 |
密度 | 2.39 g/cm3 |
熔點 | 569 °C |
沸點 | 360 °C (昇華) |
溶解度(水) | 水解 |
蒸氣壓 | 1 mmHg, 384 °C |
危險性 | |
歐盟分類 | 未列明 |
NFPA 704 | |
如果無講明,所有數據都係指25 °C,100 kPa嘅時候嘅情況。 |
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