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Density：1.206 g/mL at 20 °C(lit.)
Boiling Point：108 °C (759.8513 mmHg)
Melting Point：-25 °C
Molecular Formula：H4O4P2
Molecular Weight：65.996
Exact Mass：65.987068
PSA：108.10000
Index of Refraction：1.39 (20ºC)
Stability：Stable. Incompatible with strong bases. Reacts violently with oxidizing agents, strong bases, mercury (II) nitrate and mercury (II) oxide. Do not heat above 100 C.
Water Solubility：SOLUBLE