68133-68-6 Butanedioic acid, sulfo-, 1-(2-ethylhexyl) 4-hexyl ester, sodium salt Butanedioic acid, sulfo-, 2-ethylhexyl hexyl ester, sodium salt EINECS 268-696-0 Sodium 1-(2-ethylhexyl) 4-hexyl 2-sulphonatosuccinate