FC-4 (Perfluorobutylsulfonylfluoride)

FT-4(Perfluorobutylsulfonylfluoride)

• Trade name: FT-4
• CAS No.: 375-72-4
• MF: C₄F₉SO₂F
• Appearance: clear colorless or slightly yellow liquid
• Boiling point: 65-66 ^oC
• Refractive index(n25D): 1.2810
• Density (d420): 1.750-1.700
• Assay: 99% ( GC)
• PH: 3.8-4.8

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.