CAS No.  13598-36-2 Molecular Formula:H3PO3                 Molecular weight: 81.99 Structural Formula: Properties: Phosphorous Acid is colorless crystals, soluble in water. Specification: Items Index 99% 98.5% 97% Appearance White crystal White crystal White flake H3PO3, % 99.0 min 98.50 min 97.0 min Fe, mg/L 10.0 max 50.0 max 50.0 max Chloride (as Cl–), % 0.002 max 0.01 […]