Direct Violet 12 Chemical Properties

EPA Substance Registry System

2-Naphthalenesulfonic acid, 3,3'-[[1,1'-biphenyl]-4,4'-diylbis(azo)]bis[7-amino-4-hydroxy-, disodium salt (2429-75-6)

Direct Violet 12 Usage And Synthesis

Preparation

4-(4-Aminophenyl)benzenamine double nitriding, in alkaline conditions and 7-Amino-4-hydroxynaphthalene-2-sulfonic acid (2 Moore) coupled.

Properties and Applications

purple. Deep smoked uniform powder. Soluble in water for violet black, soluble in ethanol for product red. In the strong sulfuric acid as dark blue, diluted into dark purple. The dye solution to join strong hydrochloric acid for Red sauce or violet black, precipitation; Add thick sodium hydroxide solution for violet black, precipitation. Cellulose fiber of dyeing, the dye devoured the gender is good, in the 80 ~ 100 ℃ maximum when affinity. Hard to more sensitive. Mainly used for cotton, cellulose fiber fabrics such as glue of dyeing, also can be used for paper dyeing.

Direct Violet 12(2429-75-6)Related Product Information

• Direct Violet 107
• DIRECT VIOLET 14
• 7,7'-(Carbonyldiimino)bis[4-hydroxy-3-[(2-hydroxyphenyl)azo]-2-naphthalenesulfonic acid]disodium salt
• Direct Violet 104
• disodium 7-amino-4-hydroxy-3-[[5-hydroxy-6-(phenylazo)-7-sulphonato-2-naphthyl]azo]naphthalene-2-sulphonate
• 1-Naphthalenesulfonic acid, 3-[[4'-[(2,4-diamino-5-methylphenyl)azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]-4,6-dihydroxy-, monosodium salt
• 4-Hydroxy-3-[[4'-[(1-hydroxy-6-phenylamino-3-sodiosulfo-2-naphthalenyl)azo]-1,1'-biphenyl-4-yl]azo]naphthalene-2,7-disulfonic acid disodium salt
• Direct Violet 108
• 4-Hydroxy-3-[[5-methyl-2-methoxy-4-[(2-sodiosulfo-1-naphthalenyl)azo]phenyl]azo]-7-(phenylamino)naphthalene-2-sulfonic acid sodium salt