Perfluorobutanesulfonyl fluoride

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Perfluorobutanesulfonyl fluoride ( FX-4)
Structure formula: CF3CF2 CF2CFSO2F
Molecular formula: n- C4F9SO2F
CAS No. 375-72-4
Appearance: clear colorless or slightly yellow liquid
Boiling point: 65-66˚C
Refractive index(n25D): 1.2810
Density (d420): 1.750-1.700
Assay: 95% ( 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.

Package: 50Liter or 200Liter / iron drum, inner lined with plastic
N.W.: 70KG ( 50ltr) / 250KG ( 200ltr)