The systematic name of Acid Black 210 is 2,7-Naphthalenedisulfonic acid, 4-amino-6-((4-(((4-((2,4-diaminophenyl)azo)phenyl)amino)sulfon. With the CAS registry number 99576-15-5, it is also named as 4-Amino-6-[[4-[[[4-[(2,4-diaminophenyl)azo]phenyl]amino]sulfonyl]phenyl]azo]-5-hydroxy-3-[(4-nitrophenyl)azo]-2,7-naphthalenedisulfonic acid dipotassium salt. The product's categories are Dyes and Pigments; Acid Dyes; Leather Dyes; Dyes; Weak Acid Dyes. In addition, its molecular formula is C34H25K2N11O11S3 and molecular weight is 938.02.
Preparation of Acid Black 210: first of all, please dizotize 4,4'-Diamido-phenylsulfonyl-aniline. And put the resultant to couple with H acid to get compound 1. Then please dizotize Paranitroaniline. And put the resultant to couple with compound 1 to get compound 2. At last, you will obtain Acid Black 210 by coupling compound 2 with m-Phenylenediamine.
Uses of this chemical: it is used for dyeing of wool, silk, nylon, viscose fiber and other fabric. It is also used to color leather.
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