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4-Aminoazobenzene-3,4'-disulfonic acid

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4-Aminoazobenzene-3,4'-disulfonic acid Basic information

Product Name:
4-Aminoazobenzene-3,4'-disulfonic acid
Synonyms:
  • PARA AMINO AZOBENZENE 3,4 DISULFONIC ACID
  • P-AMINOAZOBENZENE-3,4'-DISULFONIC ACID
  • 2-amino-5-((4-sulfophenyl)azo)-benzenesulfonicaci
  • 2-amino-5-[(4-sulfophenyl)azo]-benzenesulfonicaci
  • 4-(4-amino-3-sulfophenylazo)-benzenesulfonicaci
  • 2-amino-5-(4-sulfophenyl)diazenylbenzenesulfonic acid
  • 2-azanyl-5-(4-sulfophenyl)diazenyl-benzenesulfonic acid
  • 4-amino-3,4’-disulfoazobenzene
CAS:
101-50-8
MF:
C12H11N3O6S2
MW:
357.36
EINECS:
202-947-7
Product Categories:
  • Intermediates of Dyes and Pigments
Mol File:
101-50-8.mol
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4-Aminoazobenzene-3,4'-disulfonic acid Chemical Properties

Boiling point:
611.61℃[at 101 325 Pa]
Density 
1.5733 (rough estimate)
vapor pressure 
0Pa at 25℃
refractive index 
1.6390 (estimate)
pka
-1.13±0.50(Predicted)
Water Solubility 
1000g/L at 25℃
LogP
-0.91 at 25℃
CAS DataBase Reference
101-50-8(CAS DataBase Reference)
EPA Substance Registry System
Benzenesulfonic acid, 2-amino-5-[(4-sulfophenyl)azo]- (101-50-8)
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4-Aminoazobenzene-3,4'-disulfonic acid Usage And Synthesis

Uses

4-Aminoazobenzene-3,4''-disulfonic Acid is used in the synthesis of novel acid dyes with a coumarin moiety.

Definition

ChEBI: A member of the class of azobenzenes that is azobenzene in which one of the phenyl groups is substituted at the para position by a sulfo group, while the other is substituted at a meta position by a sulfo group and at the pa a position by an amino group. The disodium salt is the biological stain 'fast yellow'.

Flammability and Explosibility

Non flammable

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