Tetraethylammonium-perfluoroctylsufonate CAS:56773-42-3 Structure formula: (C2H5)4N(+)RfSO3(-) Formula weight: 629 Appearance: yellowish or white powder Surface tension: 22mN/m (0.1% water solution) Melting point: 170-190 Type: Anion fluoro surfactant 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.