2-NAPHTHYLAMINE-8-SULFONIC ACID , 99.00% , 86-60-2
PRODUCT Properties
| Boiling point: | 220°C (rough estimate) |
| Density | 1.3588 (rough estimate) |
| refractive index | 1.6500 (estimate) |
| pka | -0.34±0.40(Predicted) |
| Water Solubility | 0.6g/L(20 ºC) |
Description and Uses
2-Aminonaphthalene-8-sulfonic acid [86- 60-2]. (7-aminonaphthalene-1-sulfonic acid), Badische acid, C10H9NO3S, Mr 223.24, crystallizes from water as needles or prisms although only 0.5 % soluble at 100 ℃. Alkalimetal salts are quite soluble in water. Caustic fusion yields 7-amino-1-naphthol, sulfonation in the cold with 20 % oleum gives 2-aminonaphthalene-6,8-disulfonic acid, but nitration gives a mixture of products. 2-Aminonaphthalene-8-sulfonic acid reacts with diazo compounds to form diazoamino compounds rather than coupling to give azo derivatives.
Azo dye intermediate.
Safety
| RIDADR | 1759 |
| HazardClass | 8 |
| PackingGroup | III |
