1-Propanesulfonic acid, 3,3'-(2-butyne-1,4-diylbis(oxy))bis(2-hydroxy-, disodium salt 1-Propanesulfonic acid, 3,3'-(2-butynylenedioxy)bis(2-hydroxy-, disodium salt 67874-62-8 Disodium 3,3'-(2-butyne-1,4-diylbis(oxy))bis(2-hydroxypropanesulphonate) EINECS 267-489-2