Phosphorous acid,Phosphorous Acid 98.5%min,we are regular exporter,we have REACH no. Features: 1) Product: phosphorous acid2) Synonyms: orthophosphorous acid; ... phosphonic acid 3) CAS no.: 10294-56-1 4) Molecular formula: H3PO3 5) Molecular weight ... Europe no problems. Hope to cooperate with you. Phosphorous Acid,Phosphorous Acid 98.5%min