- Rhoduline Acid
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- $195.00
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2026-05-11
- CAS:87-03-6
- Purity: 99.22%
- Supply Ability: 10g
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| | 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);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 | | 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 |  |
| | 5,5'-Dihydroxy-2,2'-dinaphthylamine-7,7'-disulphonic acid Chemical Properties |
| | 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. | | 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 |
| Preparation Products | 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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