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Calsoft® AOS-FS is a freeze stable, winterized version of sodium alpha olefin sulfonate. Calsoft® AOS-FS is specially designed for HI&I applications like dish wash, laundry, car wash and hard surface cleaners. Calsoft® AOS-FS has all of the desirable properties of a high foaming anionic surfactant, foam, detergency and solubility, with the advantage of excellent handling properties at low temperatures and freeze/thaw characteristics.