Octyl gallate

Octyl gallate is a synthetic antioxidant. It is produced by chemical synthesis, typically involving gallic acid and octanol.

Manufacturers add octyl gallate to foods to prevent fats and oils from becoming rancid, thereby extending shelf life. It is commonly found in fatty foods such as vegetable oils, shortenings, and baked goods.

Octyl gallate is an authorised food additive in Great Britain, listed on the Register of Food Additive Authorisations. European food safety authorities have evaluated its safety. Some studies have suggested potential adverse effects at very high doses in animal models, but evidence at typical human intake levels is considered reassuring by regulatory bodies. There is ongoing scientific discussion regarding its potential as a contact allergen for some individuals.