... form, PH value: 9-9.5, the solubility is 28% , the density is 2.633 Sodium SulfiteMolecular formula:Na2SO3properties:White crystal or ... -9.5, the solubility is 28% , the density is 2.633 , refractive index is 1.565, molecular weight is 126.04 Technical index:AppearanceWhite crystal ...