Phosphorous acid Main contents:99% min Iron: 0.001% max Chloride: 0.008% max Sulfate: 0.001% max Products’ NamePhosphorous acidMolecular formulaH3PO3Structure formulaMolecular weight81.99CAS No.13598-36-2Density1.65Melting point73°CBoiling point200°CCharacterAchromatic crystal,density1.65g/m3,better hygroscopi-city,dissolved easily in the water,has corrosive characteristicsUsageWidely used as the ...