[1,1'-Biphenyl]-3,3'-dicarboxylic acid, 4-[(6-carboxy-1,7-dihydroxy-3-sulfo-2-naphthalenyl)azo]-4'-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-, tetrasodium salt

CAS No.
6470-19-5
Chemical Name:
[1,1'-Biphenyl]-3,3'-dicarboxylic acid, 4-[(6-carboxy-1,7-dihydroxy-3-sulfo-2-naphthalenyl)azo]-4'-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-, tetrasodium salt
Synonyms
Direct Brown 168;C.I.Direct Brown 168:C.I.22790;[1,1'-Biphenyl]-3,3'-dicarboxylic acid, 4-[(6-carboxy-1,7-dihydroxy-3-sulfo-2-naphthalenyl)azo]-4'-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-, tetrasodium salt
CBNumber:
CB54748864
Molecular Formula:
C35H20N6Na4O12S
Molecular Weight:
840.59038
MDL Number:
MOL File:
6470-19-5.mol

[1,1'-Biphenyl]-3,3'-dicarboxylic acid, 4-[(6-carboxy-1,7-dihydroxy-3-sulfo-2-naphthalenyl)azo]-4'-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-, tetrasodium salt Chemical Properties,Uses,Production

Preparation

2-Amino-5-(4-amino-3-barboxyphenyl)benzoic acid double nitriding, first with 3-Methyl-1-phenyl-1H-pyrazol-5(4H)-one coupling, and then and 3,5-Dihydroxy-7-sulfo-2-naphthoic acid?coupling.

Properties and Applications

black light brown. Soluble in water for purplish red, slightly soluble in alcohol. The strong sulfuric acid for violet black, diluted is shallow brown. The dye solution to join strong hydrochloric acid for chocolate brown, have precipitation; Add thick sodium hydroxide solution for dark brown.

Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
AATCC 2 3-4 6-7 4 4

[1,1'-Biphenyl]-3,3'-dicarboxylic acid, 4-[(6-carboxy-1,7-dihydroxy-3-sulfo-2-naphthalenyl)azo]-4'-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-, tetrasodium salt Preparation Products And Raw materials

[1,1'-Biphenyl]-3,3'-dicarboxylic acid, 4-[(6-carboxy-1,7-dihydroxy-3-sulfo-2-naphthalenyl)azo]-4'-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-, tetrasodium salt C.I.Direct Brown 168:C.I.22790 Direct Brown 168 6470-19-5