Synonyms4,4'-Oxybis-1-butanesulfonic Acid Disodium Salt; WAS-18 Close 4,4'-Oxybis-1-butanesulfonic Acid Disodium Salt; WAS-18 Related products Bis(4-sulfobutyl)ether Disodium Salt M.F. M.W. 288.34 2 22.99 CAT# AR-B01441 CAS# 183278-30-0