Sulfo Tobias Acid
Product name: Sulfo Tobias Acid
Chemical name: 2-aminonaphthalene-1,5-disulfonic acid
CAS: 117-62-4
Synonys: STA;2-Naphthaleneamine-1,5-disulphonic acid; Sulpho Tobias Acid
MW: 303
MF: C10H9NO6S2
Use: It is mainly used as intermediate of reactive dyes and azo dyes ,etc.
Package: 25kg per plastic woven bag
Specifications of Sulfo Tobias acid:
| Items | Standards | Results |
| Appearance | white powder | white powder |
| Content | 67% | 67% |
| Moisture | 0.5% | 0.35% |
| Ash | 0.5% | 0.38% |
| pH | 5-8 | 6 |
Introductions of Sulfo Tobias acid
Sulfo Tobias acid is an important intermediate product in the manufacture of dyes, especially reactive dyes.The method is to sulfonate 2-naphthylamine-1-sulfonic acid(Tobias acid) in fuming sulfuric acid (SO3 content:15-30%) at room temperature.
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