Material in film form that has a base of cellulose acetate (CA), cellulose acetate butyrate (CAB) or cellulose propionate (CP). Cellulose acetate was first used as a photographic film in 1908 (Eastman-Kodak) and by 1910 the acetate film produced by Dreyfus in France started to replace cellulose nitrate motion picture film. Acetate film is also used for magnetic tapes, animation cels, drafting films, envelope windows and other protective sheets, and has many other uses. It is transparent, air proof, hygenic, and resistent to grease, oil, and dust.
