Gallic acid is a naturally occurring chemical found in many plants such as grapes, tea leaves, and oak bark. It is a powerful antioxidant that is widely used in the food industry as a food preservative because of its ability to inhibit the growth of bacteria and yeast. Propanol, on the other hand, is a type of alcohol that is commonly used as a solvent in various industries.

To produce Propyl Gallate, gallic acid is first converted into its ester form by reacting with propanol under controlled conditions. The reaction is carried out in the presence of a catalyst, which helps in accelerating the reaction. The resulting Propyl Gallate is then purified by filtering and washing with solvents.
Propyl Gallate is widely used in the food and beverage industry as a preservative for fats and oils, and in the pharmaceutical industry as an antioxidant for medicines and vitamin supplements. It is also used in the cosmetic industry as an ingredient in skin care products.
In conclusion, Propyl Gallate is a chemical compound that is produced by esterification of gallic acid with propanol. The process involves the use of a catalyst and purification steps. It is used as a food preservative, antioxidant, and ingredient in various industries.