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        Phosphorus trichloride
        Phosphorus oxychloride
        Phosphorous acid
        Hydrochloric acid
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        Product Name Phosphorous acid
        CAS RN 13598-36-2
        EINECS Number 237-066-7
        Molecular Formula H3PO3
        Molecular Weight 88.0434
        Physical and chemical property Colorless crystals
        Use Used as a reducing agent, nylon whitening agent, also used as Phosphorous acid salt, raw
                materials, pesticide intermediates.
        Structural Formula
         
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