2-Aminophenol-4-sulfonic acid
Synonym(s):2-Aminophenol-4-sulfonic acid
- CAS NO.：98-37-3
- Empirical Formula: C6H7NO4S
- Molecular Weight: 189.19
- MDL number: MFCD00007696
- EINECS: 202-662-8
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-12-18 14:08:52
What is 2-Aminophenol-4-sulfonic acid?
Chemical properties
brown crystals
The Uses of 2-Aminophenol-4-sulfonic acid
3-Amino-4-hydroxybenzenesulfonic acid can be used to synthesize various heterocyclic Schiff bases for imaging applications. 3-Amino-4-hydroxybenzenesulfonic acid can also be used for comparative assessment in the Tetrahymena pyriformis growth inhibition assay.
Production Methods
2-Aminophenol-4-sulfonic acid is obtained by boiling 4-chloro-3- nitrobenzenesulfonic acid with sodium hydroxide solution, followed by Béchamp reduction.
General Description
Rhombic brown crystals.
Air & Water Reactions
2-Aminophenol-4-sulfonic acid may be sensitive to prolonged exposure to air. Insoluble in water.
Reactivity Profile
2-Aminophenol-4-sulfonic acid may react with strong oxidizers and mineral acids or bases.
Fire Hazard
Flash point data for 2-Aminophenol-4-sulfonic acid is not available, however 2-Aminophenol-4-sulfonic acid is probably combustible.
Properties of 2-Aminophenol-4-sulfonic acid
| Melting point: | ≥300 °C(lit.) |
| Boiling point: | 398.09℃[at 101 325 Pa] |
| Density | 1.5149 (rough estimate) |
| vapor pressure | 0Pa at 25℃ |
| refractive index | 1.5500 (estimate) |
| storage temp. | Keep in dark place,Sealed in dry,Room Temperature |
| form | powder to crystal |
| pka | -0.81±0.50(Predicted) |
| color | Orange to Amber to Dark red |
| Water Solubility | <0.1 g/100 mL at 21.5 ºC |
| BRN | 514765 |
| Stability: | Stable. Incompatible with strong oxidizing agents, strong acids and strong bases. |
| CAS DataBase Reference | 98-37-3(CAS DataBase Reference) |
| EPA Substance Registry System | 4-Hydroxymetanilic acid (98-37-3) |
Safety information for 2-Aminophenol-4-sulfonic acid
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation |
| Precautionary Statement Codes |
P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for 2-Aminophenol-4-sulfonic acid
2-Aminophenol-4-sulfonic acid manufacturer
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