7575-62-4 Benzenesulfonic acid, 4-dodecyl-2,4'-oxydi-, disodium salt Benzenesulfonic acid, 4-dodecyl-2-(4-sulfophenoxy)-, disodium salt Caswell No. 403 Disodium 4-dodecyl-2,4'-oxydibenzenesulfonate EPA Pesticide Chemical Code 079002