Structure formula: CF3CF2 CF2CFSO2F
Molecular formula: n- C4F9SO2F
Appearance: clear colorless or slightly yellow liquid
Boiling point: 65-66藲C
Refractive index(n25D): 1.2810
Density (d420): 1.750-1.700
Assay: 95%,96%,99% ( Chromatographic analysis)
PH: 3.8-4.8
Physical properties: Insoluble in water, it can hydrolyze in alkali to produce nonafluorobutanesulfo salt, then acidize to obtain nonafluorobutanesulfonic acid.
Application: Its properties is similar to perfluorooctanesulfonyl fluoride, it can be used to synthesize multi-kind of fluoro surfactant, its Potassium salt C4F9SO2K is a very good anion surfactant, also a best fire retardant for polycarbonate.
