2-Amino-5-hydroxynaphthalene-1,7-disulfonic acid
- CAS NO.：6535-70-2
- Empirical Formula: C10H9NO7S2
- Molecular Weight: 319.31
- MDL number: MFCD03411983
- EINECS: 229-445-0
- SAFETY DATA SHEET (SDS)
- Update Date: 2025-08-30 18:55:25
What is 2-Amino-5-hydroxynaphthalene-1,7-disulfonic acid?
The Uses of 2-Amino-5-hydroxynaphthalene-1,7-disulfonic acid
Sulfo J acid is used as a coupling component in azo reactive dyes, e.g., C.I. Reactive Red 6.
Production Methods
2-Aminonaphthalene-1,5,7-trisulfonic acid is heated with sodium hydroxide liquor at 170℃ and worked up in a similar way to the K acid. Alternatively, J acid may be sulfonated with 65 % oleum.
Flammability and Explosibility
Not classified
Properties of 2-Amino-5-hydroxynaphthalene-1,7-disulfonic acid
| Boiling point: | 603.18℃[at 101 325 Pa] |
| Density | 1.880 |
| vapor pressure | 0Pa at 25℃ |
| pka | -0.42±0.40(Predicted) |
| Water Solubility | 35.36g/L at 25℃ |
| CAS DataBase Reference | 6535-70-2(CAS DataBase Reference) |
Safety information for 2-Amino-5-hydroxynaphthalene-1,7-disulfonic acid
Computed Descriptors for 2-Amino-5-hydroxynaphthalene-1,7-disulfonic acid
2-Amino-5-hydroxynaphthalene-1,7-disulfonic acid manufacturer
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