Description

Disodium 4-dodecyl-2,4′-oxydibenzenesulfonate (CAS No. 7575-62-4) is a high-purity anionic surfactant with the molecular formula C₂₄H₃₂Na₂O₇S₂. This compound, also known by its IUPAC name disodium;4-dodecyl-2-(4-sulfonatophenoxy)benzenesulfonate, features a dodecyl hydrophobic tail and dual sulfonate hydrophilic groups, making it an excellent wetting, emulsifying, and dispersing agent. Its unique oxydibenzenesulfonate structure provides enhanced solubility and stability in aqueous systems. Ideal for research applications in colloid chemistry, detergency studies, and material science, this product is supplied as a white to off-white crystalline powder with ≥95% purity (HPLC). Suitable for use in controlled laboratory conditions and industrial formulations requiring precise surfactant properties.

Properties

• CAS Number: 7575-62-4
• Complexity: 705
• IUPAC Name: disodium;4-dodecyl-2-(4-sulfonatophenoxy)benzenesulfonate
• InChI: InChI=1S/C24H34O7S2.2Na/c1-2-3-4-5-6-7-8-9-10-11-12-20-13-18-24(33(28,29)30)23(19-20)31-21-14-16-22(17-15-21)32(25,26)27;;/h13-19H,2-12H2,1H3,(H,25,26,27)(H,28,29,30);;/q;2*+1/p-2
• InChI Key: MORMPWNLQJTSOT-UHFFFAOYSA-L
• Exact Mass: 542.13848427
• Molecular Formula: C24H32Na2O7S2
• Molecular Weight: 542.6
• SMILES: CCCCCCCCCCCCC1=CC(=C(C=C1)S(=O)(=O)[O-])OC2=CC=C(C=C2)S(=O)(=O)[O-].[Na+].[Na+]
• Topological: 140
• Monoisotopic Mass: 542.13848427
• Synonyms: 7575-62-4, Disodium 4-dodecyl-2,4′-oxydibenzenesulfonate, Benzenesulfonic acid,4-dodecyl-2-(4-sulfophenoxy)-, sodium salt (1:2), Sodium 4-dodecyl-2-(4-sulfonatophenoxy)benzenesulfonate, Benzenesulfonic acid, 4-dodecyl-2-(4-sulfophenoxy)-, disodium salt, disodium;4-dodecyl-2-(4-sulfonatophenoxy)benzenesulfonate, Caswell No. 403, O37Y035318, EPA Pesticide Chemical Code 079002, UNII-O37Y035318, Benzenesulfonic acid, 4-dodecyl-2,4′-oxydi-, disodium salt, DTXSID6041898, SCHEMBL22117501, MORMPWNLQJTSOT-UHFFFAOYSA-L, CS-0455545, Disodium4-dodecyl-2,4′-oxydibenzenesulfonate, NS00120860, F20704, Q27285266, Sodium4-dodecyl-2-(4-sulfonatophenoxy)benzenesulfonate, Sodium 4-dodecyl-2-(4-sulfonatophenoxy)benzenesulfonate(45% in water)

Application

Disodium 4-dodecyl-2,4′-oxydibenzenesulfonate is widely used as a specialty surfactant in emulsion polymerization, textile processing, and enhanced oil recovery formulations. Its dual sulfonate groups improve interfacial activity in hard water conditions, making it valuable for detergent and cleaning product research. The compound also serves as a stabilizer in nanoparticle synthesis and as a dispersant in pigment and coating applications.

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