Sodium Cumene Sulfonate (CAS 28348-53-0): Properties & Specifications
Sodium Cumene Sulfonate is an anionic aromatic-sulfonate hydrotrope used to solubilise and stabilise surfactant systems. This page collects its verified chemical identity and the typical specifications of the commercial 40% liquid and 90% powder grades.
Quick answer: Sodium Cumene Sulfonate is CAS 28348-53-0, molecular formula C9H11NaO3S, molecular weight 222.24 g/mol, EINECS 248-983-7, IUPAC name sodium 4-(propan-2-yl)benzenesulfonate. It is highly water-soluble, anionic, and supplied as a 40% clear liquid or ≥90% white powder. Vasudev Chemo Pharma manufactures both grades in India with batch COA.
Chemical identity
| Identifier | Value |
|---|---|
| CAS Number | 28348-53-0 |
| EINECS / EC | 248-983-7 |
| Alternate CAS (m-isomer) | 32073-22-6 |
| Molecular formula | C9H11NaO3S |
| Molecular weight | 222.24 g/mol |
| IUPAC name | Sodium 4-(propan-2-yl)benzenesulfonate |
| InChIKey | QEKATQBVVAZOAY-UHFFFAOYSA-M |
| SMILES | [Na+].CC(C)c1ccc(cc1)S(=O)(=O)[O-] |
| Substance class | Anionic surfactant / hydrotrope |
| HS Code (India) | 29041090 |
Typical specifications — 40% liquid vs 90% powder
| Parameter | SCS 40% (liquid) | SCS 90% (powder) |
|---|---|---|
| Appearance | Clear aqueous liquid | White/off-white powder |
| Active matter | 39–41% | ≥ 90% |
| pH (as supplied / 1% soln) | 7.0–10.0 | ~7–9 (1% solution) |
| Specific gravity (25 °C) | 1.07–1.12 | — |
| Sulphate content | < 1.0% | Low |
| Sulfone content | < 1.0% | Low |
| Water / moisture | 58–62% | Low |
| Water solubility | Fully miscible | Highly soluble |
| Shelf life | 24 months (sealed) | 24 months (sealed, dry) |
Values are typical; batch-specific figures are confirmed on the certificate of analysis (COA) supplied with each shipment.
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