Code：km-171

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℃

Refractive index(n²⁵_D): 1.2810

Density (d₄²⁰): 1.750-1.700

Assay: 95% min.(GC)

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.

Production method:                HF

                    C₄F₉SO₂Cl  --------- >  C₄F₉SO₂F

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 coating. N.W.: 70KG  ( 50ltr)  / 250KG ( 200ltr)