ChemicalBook > CAS DataBase List > 5,5'-Dihydroxy-2,2'-dinaphthylamine-7,7'-disulphonic acid

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

Product Name
5,5'-Dihydroxy-2,2'-dinaphthylamine-7,7'-disulphonic acid
CAS No.
87-03-6
Chemical Name
5,5'-Dihydroxy-2,2'-dinaphthylamine-7,7'-disulphonic acid
Synonyms
RW acid;NSC 1698;I Acid Imide;Rhoduline acid;Acid bis-mediated;Di-J acid|||I Acid Imide|||NSC 1698;N,N-Bis(5-naphthol-7-sulfonic acid)amine;bis(4-hydroxy-2-sulfonaphthalene-7-yl)amine;6,6'-Iminobis(1-hydroxynaphthalene-3-sulfonic acid);7,7'-Iminobis(4-hydroxy-2-naphthalenesulfonic acid)
CBNumber
CB3855351
Molecular Formula
C20H15NO8S2
Formula Weight
461.46
MOL File
87-03-6.mol
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5,5'-Dihydroxy-2,2'-dinaphthylamine-7,7'-disulphonic acid Property

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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Hazard and Precautionary Statements (GHS)

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N-Bromosuccinimide Price

American Custom Chemicals Corporation
Product number
CHM0238067
Product name
7,7'-IMINOBIS(4-HYDROXY-2-NAPHTHALENESULFONIC ACID)
Purity
98.00%
Packaging
5MG
Price
$503.98
Updated
2021/12/16
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5,5'-Dihydroxy-2,2'-dinaphthylamine-7,7'-disulphonic acid Chemical Properties,Usage,Production

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

Raw materials

J acid

Preparation Products

Direct Blend Blue Direct Red 23 Direct Red 31
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5,5'-Dihydroxy-2,2'-dinaphthylamine-7,7'-disulphonic acid Suppliers

China 32 Germany 1 India 3 Singapore 1 United Kingdom 2 United States 9 Global 48
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87-03-6, 5,5'-Dihydroxy-2,2'-dinaphthylamine-7,7'-disulphonic acidRelated Search:

Tri(propylene glycol) diacrylate Sodium risedronate Dehydrothio-p-toluidinedisulfonic acid BIS(2-HYDROXYETHYL) ETHER DILAURATE dipotassium 5-amino-4-hydroxybenzene-1,3-disulphonate Triethylene glycol diacrylate 1,3-PHENYLENEDIAMINE-4,6-DISULFONIC ACID 2-Amino-1,4-benzenedisulfonic acid 2,2-Dinaphthylamine 5,5'-Dihydroxy-2,2'-dinaphthylamine-7,7'-disulphonic acid J acid 4-Hydroxy-7-methylamino-2-naphthalenesulfonic acid 7-Anilino-4-hydroxy-2-naphthalenesulfonic acid N-(2-Naphthyl)aniline 2,2'-Benzidinedisulfonic acid Dilauryl thiodipropionate 2-Amino-4,8-naphthalenedisulfonic acid 7-Amino-1,3-naphthalenedisulfonic acid

  • 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
  • 4-hydroxy-7-[(5-hydroxy-7-sulfo-naphthalen-2-yl)amino]naphthalene-2-sulfonic acid
  • 4-hydroxy-7-[(5-hydroxy-7-sulfonaphthalen-2-yl)amino]naphthalene-2-sulfonic acid
  • bis(4-hydroxy-2-sulfonaphthalene-7-yl)amine
  • 2-Naphthalenesulfonic acid, 7,7'-iminobis[4-hydroxy-
  • I Acid Imide
  • NSC 1698
  • RW acid
  • 5,5'-Dihydroxy-2,2'-dinaphthylamine-7,7'-disulphonic
  • Acid bis-mediated
  • Di-J acid|||I Acid Imide|||NSC 1698
  • 7,7'-Iminobis(4-hydroxy-2-naphthalenesulfonic acid)
  • 5,5'-Dihydroxy-2,2'-dinaphthylamine-7,7'-disulphonic acid
  • 87-03-6
  • NHC10H5OHSO3H2
  • C20H15NO8S2
  • Intermediates of Dyes and Pigments