Acetic acid is primarily used as a raw material for the manufacture of vinyl acetate (VAM). It is used as a reaction promoter in terephthalic acid production and is also a raw material for cellulose acetate, acetate esters, acetic anhydride, chloroacetic acid and a wide range of industrial synthesis. Also interesting is in the most common form, vinegar, contains about 6% of the acid making this a unique ingredient used heavily in chemical processing and in every day life.