inhibitor of chrome acid fog Tetraethyl ammonium, perfluorooctanesulfonate (FC-248) CAS:56773-42-3 Trade name: FC-248 Chemical name: Tetraethylammonium perfluorooctanesulfonate Molecular formula :C16H20F17NSO3 Molecular weight :629 Assay: 98% Appearance :White powder Surface tension: 22mN/m(0.1% aqueous solution) Application: 1. Used as chrome-fume suppressor for both decorative and functional chromium plating. (level of addition: 25mg~50mg/ liter ) 2. Used as wetting agent, leveling agent and antistatic agent for photographic paper and film 3. Used as wetting agent for glass etching and opacification baths 4. Used as wetting agent for acid baths for metal surface treatment  e.g. anodizing baths, chromatizing baths. 5. Used as demould agent for plastic Package: 25KGS/DRUM Shipment: General chemicals