Chemical name: Potassium Perfluorobutane Sulfonate CAS NO.: 29420-49-3 Molecular Formula: C4F9KO3S Molecular Weight: 338.19 Appearance: White powder Assay: 99.0%min Physical properties: Anion surfactant, it has general properties of fluoro surfactant. It is non corrosive and non flammable, soluble in water, acetone, methanol, ethyl acetate. Application: It is a kind of perfluoro anion surfactant and has the general characters fluor surfactant processing. It is widely used as inflaming retarding for synthetic materials, especially the best fire retardant. for polycarbonate.