SEARCH Articles Figures Tables Acetals are formed from aldehydes or Acetals are formed from aldehydes or ketones plus alcohols in the presence of acid Acetate anion, resonance forms Acetate-forming enzymes Addition of Alcohols to Form Hemiacetals and Acetals Diols form acetals Form amidine Acetate Ketones and aldehydes, distinguishing from reaction with alcohols to form acetal Of benzylidene acetals, to form Starch acetate film-forming properties Systems formed from nitric acid and acetic anhydride