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                            Phosphorous acid

                            Phosphorous acid executive standard: HG/T2520-93


                            Index (%)


                            Top grade(solid)

                            Top grade(liquid)

                            main content (in H3PO3)



                            chloride (in CL)



                            iron (in Fe)



                            phosphate (in PO4)



                            sulfate (in SO4)



                            Molecular formula: H3PO3
                            Molecular weight: 81.99
                            English name: Phosphorous acid
                            Appearance: white crystal
                            Property: It is corrosive. And harmful product of combustion is phosphorane and phosphorus oxide; harmful on skin and environment; having pollution on water
                            Uses: Raw material in manufacturing of phosphate and plastic stabilizer; as reducing agent in chemical reaction; applied in synthetic fiber and pesticide industry
                            Packing and storage: Inner packing adopts double layer vinyon film bag; outer packing adopts full open iron drum or fiberboard drum in seal

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