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               4,4’-Diaminostilbene-2,2’-disulf..
               p-nitrotoluene-o-sulfonic acid ..
               4,4-Dinitrostilbene-2,2-disulfon..
               Aniline-2,5-disulfonic acid mono..
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        Chemical name: 4,4-Dinitrostilbene-2,2-disulfonic acid
        Structural formula: 
                       
        Chemical formula: C14H10N2O10S2
        Molecular weight: 430
        CAS NO.:128-42-7
        Quality index:

        Item Index
        (1)Appearance orange powder
        (2)Binitro acid content(gross dry product)   ≥ 65.0%
        (3)binitrobenzyl compound
        (gross dry product )    
        ≤ 0.5%
        (4)Other organic impurities(gross dry product )   ≤ 2.0%
        (5)Inorganic salt(gross dry product )        ≤ 2.0%
        (6)Water insolubles(gross dry product)       ≤ 1.0%

        Main use: it is an intermediate of dyes.
        Packing: 25kg plastic woven bag.