o-hydroxybenzenesulphonic acid
- CAS NO.：609-46-1
- Empirical Formula: C6H6O4S
- Molecular Weight: 174.17444
- MDL number: MFCD00036220
- EINECS: 2101914
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-12-18 14:15:30
What is o-hydroxybenzenesulphonic acid?
Definition
ChEBI: An arenesulfonic acid that is phenol substituted by a sulfo group at C-2.
Production Methods
If phenol is sulfonated with an equal amount of 100% sulfuric acid under mild conditions, a mixture consisting of 2-hydroxy- and 4-hydroxybenzenesulfonic acid in a ratio of roughly 2:3 is obtained. The 2-hydroxybenzenesulfonic acid (o-hydroxybenzenesulphonic acid) can be isolated from this mixturevia the monobarium salt. The pure compound is obtained by diazotizing 2- aminobenzenesulfonic acid and boiling it under acid conditions.
Properties of o-hydroxybenzenesulphonic acid
| Melting point: | 145°C (rough estimate) |
| Boiling point: | 275.14°C (rough estimate) |
| Density | 1.384 (estimate) |
| refractive index | 1.5500 (estimate) |
| pka | -0.60±0.15(Predicted) |
| form | solid |
| EPA Substance Registry System | o-Phenolsulfonic acid (609-46-1) |
Safety information for o-hydroxybenzenesulphonic acid
Computed Descriptors for o-hydroxybenzenesulphonic acid
New Products
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