Phosphorous acid,Phosphorous Acid 98.5%min,we are regular exporter,we have REACH no. ... ) Boiling point: 200°C (decomposing at 180°C) Specifications:content:98.5%minphosphate:0.2%maxchloride:0.02%maxsulphate:0.002 ... problems. Hope to cooperate with you. Phosphorous Acid,Phosphorous Acid 98.5%min