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

Chemical name: 4-Amino-N-(4-Aminophenyl)-benzenesulfonamide, 4,4'-Diamino-phenylsulfanilamidoaniline.
Molecular structure
CAS NO.: 16803-97-7
Quality index (Executive standard Q/RWH 112-2001)


greyish white solid's powder

Purity (diazonium method) %


PH value of water suspension


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