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| | 7-Anilino-4-hydroxy-2-naphthalenesulfonic acid Basic information |
| Product Name: | 7-Anilino-4-hydroxy-2-naphthalenesulfonic acid | | Synonyms: | 7-ANILINO-4-HYDROXY-2-NAPHTHALENESULFONIC ACID;7-Anilino-4-hydroxynaphthalene-2-sulphonic acid;7-ANILINO-4-NAPHTHOL-2-SULFONIC ACID;4-HYDROXY-7-(PHENYLAMINO)-2-NAPHTHALENESULFONIC ACID;4-hydroxy-7-(phenylamino)-2-naphthalenesulfonicaci;6-Phenylamino-1-naphthol-3-sulfonicacid;4-hydroxy-7-(phenylamino)naphthalene-2-sulfonic acid;2-Phenylamine-5-naphthol-7-sulfonic acid | | CAS: | 119-40-4 | | MF: | C16H13NO4S | | MW: | 315.34 | | EINECS: | 204-320-3 | | Product Categories: | Intermediates of Dyes and Pigments | | Mol File: | 119-40-4.mol |  |
| | 7-Anilino-4-hydroxy-2-naphthalenesulfonic acid Chemical Properties |
| Safety Statements | 22-24/25 | | HS Code | 2922.29.8190 |
| | 7-Anilino-4-hydroxy-2-naphthalenesulfonic acid Usage And Synthesis |
| Chemical Properties | Blue-gray crystals. Soluble in alkali, insoluble in organic solvent. 4-Hydroxy-7-phenylaminonaphthalene-2- sulfonic acid [119-40-4] N-phenyl J acid, is produced by reaction of J acid with aniline in aqueous sodium bisulfite at reflux for 40 h (yield 85 %). It is used to produce C.I. Direct Violet 7, C.I. Direct Violet 9, C.I. Direct Violet 51, C.I. Direct Blue 78, and C.I. Direct Blue 168. | | Uses | 7-Anilino-4-hydroxy-2-naphthalenesulfonic acid is a dye intermediate, which is used to synthesize azo dyes such as direct copper salt green BTL, copper salt blue FBGL and copper salt purple BBL. | | Flammability and Explosibility | Non flammable | | Synthesis | 7-Anilino-4-hydroxy-2-naphthalenesulfonic acid was synthesized from the condensation of J acid and aniline in the medium of sodium bisulfite. |
| | 7-Anilino-4-hydroxy-2-naphthalenesulfonic acid Preparation Products And Raw materials |
| Raw materials | Sodium chloride-->Sulfur dioxide-->Congo red paper | | Preparation Products | DIRECT VIOLET 51-->disodium 3-[[4'-[[6-amino-1-hydroxy-3-sulphonato-2-naphthyl]azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]-4-hydroxynaphthalene-1-sulphonate-->Direct Bordeaux NGB-->Direct Violet 9-->Direct Blue 78-->trisodium 4-hydroxy-5-[[4-[[1-hydroxy-6-(phenylamino)-3-sulphonato-2-naphthyl]azo]-5-methoxy-2-methylphenyl]azo]naphthalene-2,7-disulphonate-->4-Hydroxy-3-[[5-methyl-2-methoxy-4-[(2-sodiosulfo-1-naphthalenyl)azo]phenyl]azo]-7-(phenylamino)naphthalene-2-sulfonic acid sodium salt-->[1,1'-Biphenyl]-3,3'-dicarboxylicacid,4-[2-[1-hydroxy-6-(phenylamino)-3-sulfo-2-naphthalenyl]diazenyl]-4'-[2-(1-hydroxy-5-sulfo-2-naphthalenyl)diazenyl]-,sodium salt (1:4)-->tetrasodium 2-[[4-[[4-[[1-hydroxy-6-(phenylamino)-3-sulphonato-2-naphthyl]azo]-7-sulphonato-1-naphthyl]azo]-1-naphthyl]azo]benzene-1,4-disulphonate-->4-Hydroxy-7-phenylamino-3-[[2,5-dimethyl-4-[(4-methyl-2-sodiosulfophenyl)azo]phenyl]azo]naphthalene-2-sulfonic acid sodium salt-->DIRECT BLUE 78-->C.I. Acid Brown 87-->Direct Blue 308-->Direct blue 83 (C.I. 34230)-->4-Amino-5-hydroxy-6-[[4'-[(1-hydroxy-6-phenylamino-3-sodiosulfo-2-naphthalenyl)azo]-1,1'-biphenyl-4-yl]azo]naphthalene-1,3-disulfonic acid disodium salt-->[[4'-[[1-Hydroxy-6-(phenylamino)-3-sulfo-2-naphthalenyl]azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]amino]oxoacetic acid disodium salt-->4-Hydroxy-3-[[4'-[(1-hydroxy-6-phenylamino-3-sodiosulfo-2-naphthalenyl)azo]-1,1'-biphenyl-4-yl]azo]naphthalene-2,7-disulfonic acid disodium salt-->3-[[4-[(4-Amino-2-sodiosulfophenyl)azo]-5-methyl-2-methoxyphenyl]azo]-4-hydroxy-7-phenylaminonaphthalene-2-sulfonic acid sodium salt-->DIRECT VIOLET 9-->2-Naphthalenesulfonic acid, 4-hydroxy-3-4-(4-nitro-2-sulfophenyl)azo-6(or 7)-sulfo-1-naphthalenylazo-7-(phenylamino)-, trisodium salt |
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