2,2,2-Trifluoroethyl perfluorobutylsulfonate79963-95-4Name:2,2,2-Trifluoroethyl perfluorobutylsulfonate CAS NO.:36290-04-7 Appearance: Light-yellow powder Purity: 95% Application: Mainly used for various high-strength concrete, steel concrete, prestressed concrete, large formwork concrete, sli