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        7-hydroxynaphthalene-1,3-disulphonic acid

        C.A.S No.:118-32-1
        chemical structural formula:C10H8O7S2
        molecular mass:380.48
        chemical name:2-hydroxy-naphthalene-6,8-dipotassium disulfonate

        appearance

        gray-white powder

        content

        above 90%(elaboration product above 95%)

        the content of R salt

        below 1.0%

        free acid(H2SO4)

        below 1.5%

        water insoluble

        below 0.1%

        packaging

        25kg woven bag



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