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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Safety

TSCA: TSCA listed

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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.

Uses

Rhoduline acid is an acidic compound that can be used for the synthesis of azo dyes[1].

Flammability and Explosibility

Not classified

References

[1] Shirasaki et al, Bisazo compounds and their use for dyeing fibers, German, DE3403326A1, 1984-08-09.

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 37 Germany 1 India 3 Singapore 1 United Kingdom 2 United States 9 Global 53

Meryer (Shanghai) Chemical Technology Co., Ltd.

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Xiangshui Henryda Tech Chemical Co., Ltd.

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Hubei Chanmol Biotech Co., Ltd.

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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 2,2'-Benzidinedisulfonic acid 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 4-Hydroxy-7-methylamino-2-naphthalenesulfonic acid 7-Anilino-4-hydroxy-2-naphthalenesulfonic acid N-(2-Naphthyl)aniline Dilauryl thiodipropionate 2-Amino-4,8-naphthalenedisulfonic acid 7-Amino-1,3-naphthalenedisulfonic acid J 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

87-03-6

NHC10H5OHSO3H2

C20H15NO8S2

Intermediates of Dyes and Pigments