Basic information Safety Supplier Related

5,5'-Dihydroxy-2,2'-dinaphthylamine-7,7'-disulphonic acid

Basic information Safety Supplier Related

5,5'-Dihydroxy-2,2'-dinaphthylamine-7,7'-disulphonic acid Basic information

Product Name:
5,5'-Dihydroxy-2,2'-dinaphthylamine-7,7'-disulphonic acid
Synonyms:
  • 7,7'-Iminobis(4-hydroxy-2-naphthalenesulfonic acid)
  • 5,5'-dihydroxy-2,2'-dinaphthylamine-7,7'-disulphonic acid
  • 4,4'-Dihydroxy-7,7'-iminodi(naphthalene-2-sulfonic acid)
  • Rhoduline acid
  • 4,4'-dihydroxy-7,7'-iminodi(naphthalene-2-sulphonic acid)
  • N,N-Bis(5-naphthol-7-sulfonic acid)amine
  • 6,6'-Iminobis(1-hydroxynaphthalene-3-sulfonic acid)
  • 4-hydroxy-7-[(5-hydroxy-7-sulfo-2-naphthyl)amino]naphthalene-2-sulfonic acid
CAS:
87-03-6
MF:
C20H15NO8S2
MW:
461.46
EINECS:
201-719-4
Product Categories:
  • Intermediates of Dyes and Pigments
Mol File:
87-03-6.mol
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5,5'-Dihydroxy-2,2'-dinaphthylamine-7,7'-disulphonic acid Chemical Properties

Boiling point:
772.18℃[at 101 325 Pa]
Density 
1.734
vapor pressure 
0Pa at 25℃
pka
-0.14±0.40(Predicted)
Water Solubility 
36.1g/L
LogP
-1.83
EPA Substance Registry System
2-Naphthalenesulfonic acid, 7,7'-iminobis[4-hydroxy- (87-03-6)
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5,5'-Dihydroxy-2,2'-dinaphthylamine-7,7'-disulphonic acid Usage And Synthesis

Chemical Properties

7,70 -Iminobis(4-hydroxynaphthalene-2-sulfonic acid) [87-03-6] J acid imide, di-J acid, is produced by heating the sodium salt of J acid in aqueous sodium bisulfite at 106℃ for 36 h (yield 89 %). It is used to produce C.I. Direct Reds 31 and 149, as well as C.I. Direct Violets 48, 66, and 102.

Flammability and Explosibility

Not classified

5,5'-Dihydroxy-2,2'-dinaphthylamine-7,7'-disulphonic acid Preparation Products And Raw materials

Preparation Products

Direct Red 23Direct Blend BlueDirect Red 31

Raw materials

J acid

5,5'-Dihydroxy-2,2'-dinaphthylamine-7,7'-disulphonic acidSupplier

Meryer (Shanghai) Chemical Technology Co., Ltd.
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4006608290; 18621169109
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market03@meryer.com
Shanghai Hanhong Scientific Co.,Ltd.
Tel
021-54306202 13764082696;
Email
info@hanhongsci.com
Hangzhou Yuhao Chemical Technology Co., Ltd
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0571-82693216
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info@yuhaochemical.com
Xiangshui Henryda Tech Chemical Co., Ltd.
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13771648447
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sales@henryda-chem.com
TargetMol Chemicals Inc.
Tel
+1-781-999-5354 +1-00000000000
Email
marketing@targetmol.com
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5,5'-Dihydroxy-2,2'-dinaphthylamine-7,7'-disulphonic acid(87-03-6)Related Product Information