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

Molecular Weight:: 461.46

MOL File:: 87-03-6.mol

Modify Date:: 2023/11/6 15:32:58

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

5,5'-Dihydroxy-2,2'-dinaphthylamine-7,7'-disulphonic acid Chemical Properties,Uses,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.

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 tetrasodium 5,5'-[iminobis[(1-hydroxy-3-sulphonato-6,2-naphthylene)azo(2,5-dimethoxy-4,1-phenylene)azo]]bis(salicylate) Direct Blue 163

DIRECT RED 31 DIRECT RED 149 DIRECT VIOLET 66 C.I. Direct Blue 185 tetrasodium 5,5'-[iminobis[(1-hydroxy-3-sulphonato-6,2-naphthylene)azo(5-methoxy-2-methyl-4,1-phenylene)azo]]bis(salicylate)

C.I. Direct Blue 184 DIRECT VIOLET 14 C.I. Direct Violet 49 disodium [mu-[[7,7'-iminobis[4-hydroxy-3-[[2-hydroxy-5-(N-methylsulphamoyl)phenyl]azo]naphthalene-2-sulphonato]](6-)]]dicuprate(2-) [1,1'-Biphenyl]-3,3'-disulfonic acid, 4,4'-bis[[1-hydroxy-6-[(5-hydroxy-7-sulfo-2-naphthalenyl)amino]-3-sulfo-2-naphthalenyl]azo]-, hexasodium salt

C.I. Acid Blue 36 tetrasodium [mu-[[7,7'-iminobis[3-[(3-chloro-2-hydroxy-5-sulphophenyl)azo]-4-hydroxynaphthalene-2-sulphonato]](8-)]]dicuprate(4-) Direct Violet 102

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

Global( 44)Suppliers

Supplier	Tel	Country	ProdList	Advantage	Inquiry
Jagson Colorchem Limited	+91-9879484214 +91-9879484214	Gujarat, India	318	58	Inquiry
OCEAN TRADING CORPORATION	+91(22) 24921669	New Delhi, India	6211	58	Inquiry
Jemby Chem Limited	08068442233Ext 389	Ahmedabad, India	10	58	Inquiry
TargetMol Chemicals Inc.	+1-781-999-5354 +1-00000000000	United States	19892	58	Inquiry
Hefei TNJ Chemical Industry Co.,Ltd.	0551-65418671	China	34571	58	Inquiry
Dayang Chem (Hangzhou) Co.,Ltd.	571-88938639 +8617705817739	China	52861	58	Inquiry
Hebei Guanlang Biotechnology Co., Ltd.	+8619930503259	China	18434	58	Inquiry
PT CHEM GROUP LIMITED	+86-85511178 +86-85511178	China	35426	58	Inquiry
SUZHOU SENFEIDA CHEMICAL CO.,LTD	+86-0512-83500002 +8615195660023	China	23053	58	Inquiry
ABCR GmbH & CO. KG	49 721 95061 0	Germany	6846	75	Inquiry

Supplier	Advantage
Jagson Colorchem Limited	58
OCEAN TRADING CORPORATION	58
Jemby Chem Limited	58
TargetMol Chemicals Inc.	58
Hefei TNJ Chemical Industry Co.,Ltd.	58
Dayang Chem (Hangzhou) Co.,Ltd.	58
Hebei Guanlang Biotechnology Co., Ltd.	58
PT CHEM GROUP LIMITED	58
SUZHOU SENFEIDA CHEMICAL CO.,LTD	58
ABCR GmbH & CO. KG	75

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2,2-Dinaphthylamine 2-Amino-1,4-benzenedisulfonic acid Triethylene glycol diacrylate dipotassium 5-amino-4-hydroxybenzene-1,3-disulphonate BIS(2-HYDROXYETHYL) ETHER DILAURATE

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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