Name:phosphorous acid Cas:13598-36-2 Spec: Inspection itemsThe degree of the products Best GradeFirst GradeQualified grade ProductsProductsproducts Main contents(counted with9998.598 H3PO3) Iron(counted with Fe)0.00050.0010.005 Chloride(counted with C1)0.0010.010.02 Sulfate(counted with SO4)0.00050.0080.01 Phosphate(counted with PO4)0.10.20.6 ComplexionWhite crystalWhite crystalWhite crystal Water solution experimentsWhite crystalClear andClear and achromatic achromatic