2-Hydroxy-5-[[4'-[[4-[(1-hydroxy-4-sulfo-2-naphtyl)azo]-1-naphtyl]azo]-1,1'-biphenyl-4-yl]azo]benzoic acid disodium salt

Product Name
2-Hydroxy-5-[[4'-[[4-[(1-hydroxy-4-sulfo-2-naphtyl)azo]-1-naphtyl]azo]-1,1'-biphenyl-4-yl]azo]benzoic acid disodium salt
CAS No.
6449-81-6
Chemical Name
2-Hydroxy-5-[[4'-[[4-[(1-hydroxy-4-sulfo-2-naphtyl)azo]-1-naphtyl]azo]-1,1'-biphenyl-4-yl]azo]benzoic acid disodium salt
Synonyms
C.I.31760;Benzo Grey S;Direct Black 40;C.I.Direct Black 40;C.I.Direct Black 40:C.I.31760;2-Hydroxy-5-[[4'-[[4-[(1-hydroxy-4-sulfo-2-naphtyl)azo]-1-naphtyl]azo]-1,1'-biphenyl-4-yl]azo]benzoic acid disodium salt;Benzoic acid, 2-hydroxy-5-((4'-((4-((1-hydroxy-4-sulfo-2-naphthalenyl)azo)-1-naphthalenyl)azo)(1,1'-biphenyl)-4-yl)azo)-, disodium salt
CBNumber
CB52149438
Molecular Formula
C39H24N6Na2O7S
Formula Weight
766.6884
MOL File
6449-81-6.mol
More
Less

2-Hydroxy-5-[[4'-[[4-[(1-hydroxy-4-sulfo-2-naphtyl)azo]-1-naphtyl]azo]-1,1'-biphenyl-4-yl]azo]benzoic acid disodium salt Property

EPA Substance Registry System
C.I. Direct Black 40 (6449-81-6)
More
Less

Hazard and Precautionary Statements (GHS)

More
Less

2-Hydroxy-5-[[4'-[[4-[(1-hydroxy-4-sulfo-2-naphtyl)azo]-1-naphtyl]azo]-1,1'-biphenyl-4-yl]azo]benzoic acid disodium salt Chemical Properties,Usage,Production

Preparation

4-(4-Aminophenyl)benzenamine double nitriding, first coupled with 2-Hydroxybenzoic acid, again with Naphthalen-1-amine coupling, product to diazo, and 4-Hydroxynaphthalene-1-sulfonic acid coupling.

Properties and Applications

Grey

Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
ISO 4 4 2 2 2-3

2-Hydroxy-5-[[4'-[[4-[(1-hydroxy-4-sulfo-2-naphtyl)azo]-1-naphtyl]azo]-1,1'-biphenyl-4-yl]azo]benzoic acid disodium salt Preparation Products And Raw materials

Raw materials

Preparation Products

More
Less

2-Hydroxy-5-[[4'-[[4-[(1-hydroxy-4-sulfo-2-naphtyl)azo]-1-naphtyl]azo]-1,1'-biphenyl-4-yl]azo]benzoic acid disodium salt Suppliers

Global 0

6449-81-6, 2-Hydroxy-5-[[4'-[[4-[(1-hydroxy-4-sulfo-2-naphtyl)azo]-1-naphtyl]azo]-1,1'-biphenyl-4-yl]azo]benzoic acid disodium saltRelated Search:

CHLORAZOL BLACK LF DIRECT BLACK 51 Direct Black 56 Copper, diazotized 2-methoxy-4-nitrobenzenamine-4-[(8-hydroxy-6-sulfo-2-naphthalenyl)amino]benzoic acid coupling products complexes SIRIUS GREY G 2-[benzenesulfonyl-(3-methylphenyl)amino]-N-(2-methoxy-5-methyl-phenyl)acetamide Benzoic acid, 5-[[4-[[7-[(2,4-diaminophenyl)azo]-1-hydroxy-3-sulfo-2-naphthalenyl]azo]-1-naphthalenyl]azo]-2-hydroxy-, disodium salt trisodium 5-[[4-[[7-[(6-amino-1-hydroxy-3-sulphonato-2-naphthyl)azo]-1-hydroxy-3-sulphonato-2-naphthyl]azo]-1-naphthyl]azo]salicylate Direct Black 38

  • 2-Hydroxy-5-[[4'-[[4-[(1-hydroxy-4-sulfo-2-naphtyl)azo]-1-naphtyl]azo]-1,1'-biphenyl-4-yl]azo]benzoic acid disodium salt
  • Benzo Grey S
  • C.I.31760
  • C.I.Direct Black 40
  • Benzoic acid, 2-hydroxy-5-((4'-((4-((1-hydroxy-4-sulfo-2-naphthalenyl)azo)-1-naphthalenyl)azo)(1,1'-biphenyl)-4-yl)azo)-, disodium salt
  • C.I.Direct Black 40:C.I.31760
  • Direct Black 40
  • 6449-81-6