Citric Acid is an organic substance with the chemical formula HOC(CO2H)(CH2CO2H)2. It is a mild organic acid that has no colour. This naturally exists in citrus fruits. The product is a biochemical intermediary in the citric acid cycle, which is a part of the metabolism of all aerobic organisms. Each year, more than two million tonnes of citric acid are produced. Citric Acid is frequently employed as a flavoring, an acidifier, and a chelating agent.