Appearance: white crystal

Melting point: 73.6°C

Boiling point: 200°C (decomposition)

Solubility: soluble in water, alcohol, strong hygroscopicity.

Density: 1.651g/cm3 Hazardous characteristics: corrosive, thermal decomposition of the highly toxic gas.

Safety: Avoid and H blowing agent such as a total storage mixed operation is strictly prohibited contact with skin or eyes.

CAS NO:13598-36-2

EC NO:237-066-7

Molecular Formula:H₃PO₃

Molecular Weight:81.9957

Synonyms:;Phosphonic acid;hydrogen phosphonate;phosphorus(+3) trihydride cation trihydroxide;Orthophosphorus;Orthophosphorous acid;Ortho-Phosphorous acid;

Molecular Structure: