1,3-Benzenedisulfonic acid CAS Number: 98-48-6
Pharmaceutical Materials 2025-03-02
CAS Number: 98-48-6
Molecular Formula: C6H6O6S2
Molecular Weight: 282.202
Appearance: White crystalline powder
Density: 1.764 g/cm³ Melting Point: 136.0 °C
Solubility: Soluble in water, forming an acidic solution
Usage: Used as an intermediate in dyes, pharmaceuticals, and chemical synthesis.
1,3-Benzenedisulfonic acid, also known as benzene-1,3-disulfonic acid or m-benzenedisulfonic acid, is an organic compound with the CAS number 98-48-6. It exists as a crystalline solid and is highly soluble in water. This compound is primarily used as an intermediate in the production of dyes and pharmaceuticals. Due to its sulfonated structure, it exhibits acidic properties and can react with bases to form salts. Handling this compound should be done with caution, as it can be irritating to the skin and eyes.
| Property Category | Details |
|---|---|
| Physical Properties | |
| Appearance | Crystalline solid |
| Melting Point | 136.0 °C |
| Density | 1.764 g/cm³ |
| Water Solubility | Very soluble |
| Chemical Properties | |
| Molecular Formula | C6H6O6S2 |
| Molecular Weight | 238.24 g/mol |
| CAS Number | 98-48-6 |
| pKa (Acid Dissociation Constant) | -1.43±0.30 (predicted) |
| Functional Groups | Sulfonic acid (-SO3H) |
| Reactivity | Reacts with bases to form salts |
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