FX-4 Perfluorobutylsulfonylfluoride Assayú¦95% Appearance: colorless and transparent liquid Application: It is the homologue of perfluorooctylsulfonylfluoride and can be used to synthetize various of special perfluoro surfactants. Its potassium salt is an excellent anion surfactant and fire retardant for polycarbonate.
