Propyl gallate, commonly abbreviated as PG, is a widely used antioxidant and preservative. It is a natural derivative formed by the condensation of gallic acid and propanol, and it is widely applied in food, cosmetics, and other fields due to its excellent antioxidant properties.

It is a stable substance with certain hygroscopicity and is not resistant to light or high temperatures. When it comes into contact with metal ions such as copper and iron, it will undergo a color reaction, turning purple or dark green. It is slightly soluble in water and some oils, and has a slight bitter taste without obvious odor.

In the food industry, propyl gallate is mainly used as an antioxidant to prevent oxidation, acidification and deterioration of oil-containing and fatty foods. It can effectively extend the shelf life of food and maintain the original flavor and quality of food.

It is widely used in edible oils, fried foods, dried fish products, biscuits, instant noodles, cured meat products and other foods, and its usage amount is strictly regulated to ensure food safety.

In the cosmetics and personal care industry, propyl gallate is used as an antioxidant and preservative. It can prevent the oxidation of active ingredients in cosmetics, avoid discoloration, viscosity change and deterioration of products, and extend the service life of cosmetics.

It is often added to lipsticks, moisturizers, skin cleansers, sunscreen products and oral care products. It also has certain protective effects, which can help reduce the risk of tooth decay and scavenge free radicals in the body.