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

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

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

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;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);2-Naphthalenesulfonic acid, 7,7'-iminobis[4-hydroxy-

CBNumber:: CB3855351

Molecular Formula:: C20H15NO8S2

Molecular Weight:: 461.46

MDL Number:: MFCD00035713

MOL File:: 87-03-6.mol

Last updated:2023-11-06 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
FDA UNII	EB8FE6GXT2
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 price

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
American Custom Chemicals Corporation	CHM0238067	7,7'-IMINOBIS(4-HYDROXY-2-NAPHTHALENESULFONIC ACID) 98.00%	87-03-6	5MG	$503.98	2021-12-16	Buy

Product number	Packaging	Price	Buy
CHM0238067	5MG	$503.98	Buy

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.

Flammability and Explosibility

Not classified

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

Synthesis of 5,5'-Dihydroxy-2,2'-dinaphthylamine-7,7'-disulphonic acid from J acid

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( 42)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
Hubei Jusheng Technology Co.,Ltd.	18871490254	linda@hubeijusheng.com	CHINA	28180	58
TargetMol Chemicals Inc.	+1-781-999-5354 +1-00000000000	marketing@targetmol.com	United States	19892	58
Hefei TNJ Chemical Industry Co.,Ltd.	0551-65418671	sales@tnjchem.com	China	34572	58
Dayang Chem (Hangzhou) Co.,Ltd.	571-88938639 +8617705817739	info@dycnchem.com	CHINA	52867	58
Hebei Guanlang Biotechnology Co., Ltd.	+86-19930503259 +86-19930503259	cherry@crovellbio.com	China	18456	58
PT CHEM GROUP LIMITED	+86-85511178 +86-85511178	peter68@ptchemgroup.com	China	35453	58
Meryer (Shanghai) Chemical Technology Co., Ltd.	4006608290; 18621169109	market03@meryer.com	China	40241	62
Shanghai Hanhong Scientific Co.,Ltd.	021-54306202 13764082696;	info@hanhongsci.com	China	42982	64
Hangzhou Yuhao Chemical Technology Co., Ltd	0571-82693216	info@yuhaochemical.com	China	9394	52
Xiangshui Henryda Tech Chemical Co., Ltd.	13771648447	sales@henryda-chem.com	China	61	58

Supplier	Advantage
Hubei Jusheng Technology Co.,Ltd.	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
Meryer (Shanghai) Chemical Technology Co., Ltd.	62
Shanghai Hanhong Scientific Co.,Ltd.	64
Hangzhou Yuhao Chemical Technology Co., Ltd	52
Xiangshui Henryda Tech Chemical Co., Ltd.	58

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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 87-03-6 NHC10H5OHSO3H2 C20H15NO8S2 Intermediates of Dyes and Pigments