Phosphorous acid is a diprotic phosphorus oxoacid that exists as two tautomers in solution, with the major one being HP(O)(OH)2 and the minor one being P(OH)3. Its applications include use in basic lead phosphite production and controlling plant diseases.
Solubility Information: Solubility in water: soluble. Other solubilities: soluble in alcohol Health Hazard 1: Danger. Physical Form: Crystals. Linear Formula: H3PO3.