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           p-nitrotoluene-o-sulfonic acid ..
           Aniline-2,5-disulfonic acid mono..
           Para Amino Azo Benzene 4 Sulfoni..
           4-aminobenzene-1,3-disulphonic a..

    Chemical name: Para Amino Azo Benzene 4 Sulfonic Acid
    Structural formula: 

    Chemical formula: C12H11N3O3S
    Molecular weight: 277.3
    CAS NO.:104-23-4
    Quality index:

    Item Index
    Appearance Orange to Brown Powder
    Water 1% Maxi
    Water Insolluble 0.2% Maxi
    acid  [102-23-8]
    1 %  Maxi
    4-Aminoazobenzene [60-09-3] <  0.1%
    Sulphate  content 2500  PPM  Maxi
    Ash  content 0.1%  Maxi

    Main use: it is an intermediate of dyes, can be used to manufacture Acid Yellow 6, Acid Red 151, Acid Red 7, Acid Red 142, Direct Red 152
    Packing: 25kg plastic woven bag or upon clients' request.