New York, NY -- (SBWIRE) -- 10/05/2015 -- Acetic anhydride is manufactured by carbonylation of acetate. It is also manufactured by the reaction of ketene with acetic acid. Acetic anhydride acid is colorless and has a pungent odor. Acetic anhydride is majorly consumed in cellulose acetates. Cellulose acetate flakes include cellulose acetate propionate (CAP), cellulose di-acetate and cellulose tri-acetate. Cellulose acetate flakes are used in cigarette filters, plastics and filament yarns.