... , competitive price, stable supplying and satisfactory service. [Description] Chemical Name: Phosphorous acid, Orthophosphorous acidMolecular Formula: H3PO3CAS No.: 13598-36-2UN NO ... .003%[Application]Widely used as the raw materials to make phosphorous acid salt, used as the raw materials for making of ... , 1000kg super sack.Other packing options are available upon request. Phosphorous acid 99%