2-Sulfobenzoic acid
- CAS NO.：632-25-7
- Empirical Formula: C7H6O5S
- Molecular Weight: 202.18
- MDL number: MFCD00007479
- EINECS: 211-176-5
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-05-28 04:09:16
What is 2-Sulfobenzoic acid?
Chemical properties
White needles. Soluble in water and alcohol; insoluble in ether.
The Uses of 2-Sulfobenzoic acid
Manufacture of sulfonaphthalein indicators, dyes.
What are the applications of Application
o-Sulfobenzoic acid is a heterocyclic building block
Synthesis Reference(s)
The Journal of Organic Chemistry, 16, p. 1582, 1951 DOI: 10.1021/jo50004a014
Purification Methods
Crystallise the acid from water. The S-benzylisothiuronium salt has m 205.5-206.5o (from aqueous EtOH). [Beilstein 1 H 369, 1 II 215, 1 III 658.]
Properties of 2-Sulfobenzoic acid
| Melting point: | 142 °C |
| Density | 1.620±0.06 g/cm3(Predicted) |
| storage temp. | 2-8°C |
| pka | -1.12±0.15(Predicted) |
| color | White |
| CAS DataBase Reference | 632-25-7(CAS DataBase Reference) |
| EPA Substance Registry System | Benzoic acid, 2-sulfo- (632-25-7) |
Safety information for 2-Sulfobenzoic acid
| Signal word | Danger |
| Pictogram(s) |
 Corrosion Corrosives GHS05 |
| GHS Hazard Statements |
H314:Skin corrosion/irritation H318:Serious eye damage/eye irritation |
| Precautionary Statement Codes |
P280:Wear protective gloves/protective clothing/eye protection/face protection. P310:Immediately call a POISON CENTER or doctor/physician. 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-Sulfobenzoic acid
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![METHYL 2-[(2,3,4,5,6-PENTAFLUOROPHENOXY)SULFONYL]BENZENECARBOXYLATE](https://img.chemicalbook.in/StructureFile/ChemBookStructure7/GIF/CB0761806.gif)
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