... 99%. A safe antioxidant for food, feed, pet food, cosmetics. Propyl Gallate Food Grade (E310) 99% Synonyms:Propyl gallate, propyl ester of gallic ... :24 months under above-mentioned conditions and in unopened container. 100kg Propyl Gallate Food Grade 99%, N Propyl Gallate, PG, CAS 121 ...