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4,4'-Diamino-Phenylsulfanilamidoaniline (Abbreviation DASA)

I . Chemical name
    4-Amino-N-(4-Aminophenyl)-benzenesulfonamide,4,4'-Diamino-phenylsulfanilamidoaniline.

II . Molecular structure

III . Chemical Abstract Registry Number
    16803-97-7

IV . Quality Index (Executive standard Q/RWH 112-2001)
Appearance greyish white solid's powder
Purity (diazonium method) % ≥96.0
PH value of water suspension 6.5~7.5

V . Applied illustration
    The product is the substitute of overseasly prohibited dyestuff intermediate benzidine and derivative. It is already used for produce acid black 210, acid black 234 etc.dyes at domestic market.

VI . Package
    The product packed in paper plastic bag lined with plastic film, net weight 20kg.