Product Name: Phosphorous Acid Molecular Formula: H3PO3 UN No.: 2834 Molecular Weight: 82.00 CAS No.:13598-36-1 or 10294-56-1 Usage: Phosphorous acid is mainly used in the production of phosphates, synthetic fibers and organ phosphorus pesticides, etc. It is also used in producing high performance water treating agent ATMP. Package: 25kg, 500kg or 1000kg woven bag for phosphorous acid crystal; 280kg/HDPE drum, 1400kg/IBC for phosphorous acid solution.