5,5'-Dihydroxy-2,2'-dinaphthylamine-7,7'-disulphonic acid
- CAS NO.：87-03-6
- Empirical Formula: C20H15NO8S2
- Molecular Weight: 461.46
- MDL number: MFCD00035713
- EINECS: 201-719-4
- SAFETY DATA SHEET (SDS)
- Update Date: 2025-12-04 14:24:59
What is 5,5'-Dihydroxy-2,2'-dinaphthylamine-7,7'-disulphonic acid?
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
Properties of 5,5'-Dihydroxy-2,2'-dinaphthylamine-7,7'-disulphonic acid
| 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 |
| EPA Substance Registry System | 2-Naphthalenesulfonic acid, 7,7'-iminobis[4-hydroxy- (87-03-6) |
Safety information for 5,5'-Dihydroxy-2,2'-dinaphthylamine-7,7'-disulphonic acid
Computed Descriptors for 5,5'-Dihydroxy-2,2'-dinaphthylamine-7,7'-disulphonic acid
New Products
Indole Methyl Resin tert-butyl 9-methoxy-3-azaspiro[5.5]undecane-3-carboxylate Boc-His(Boc)-OH 2-CTC Resin 4-Chloro-7-tosy1-7Hpyrrolo[2,3-d]pyrimidine 5,7-Dibromo-1H-indole 2,5-dichloro-N-hydroxy-4,6-dimethylpyridine-3-carboximidamide 2,2-Dimethoxy-7-azaspiro[3.5]nonane hydrochloride 4-chloromethyl-5-methyl-1,3-dioxol-2-one (DMDO-Cl) R-2-BENZYLOXY PROPIONIC ACID 1,1’-CARBONYLDIIMIDAZOLE 1,1’-CARBONYLDI (1,2-4 TRIAZOLE) N-METHYL INDAZOLE-3-CARBOXYLIC ACID 4-((2-hydroxyethyl)thio)benzoic acid 1-(TERT-BUTOXYCARBONYL)-2-PYRROLIDINONE Methyl 6-methylnicotinate 3-Pyridineacrylic acid tert-Butyl carbazate TETRAHYDRO-2H-PYRAN-3-OL 2-((4-morpholinophenylamino) (methylthio) methylene) malononitrile 3-(4-morpholinophenylamino)-5-amino-1H-pyrazole-4-carbonitrile 2,4-dihydroxybenzaldehyde 1,3-Diethyl-1,3-Diphenylurea Methyl 2-methylquinoline-6-carboxylateRelated products of tetrahydrofuran
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