Citric acid is a weak organic acid that has the chemical formula C6H8O7. It occurs naturally in citrus fruits. Citric acid anhydrous crystalline powder is a natural acid found in citrus fruits and is commonly used as a food additive, preservative, and flavoring agent. It is also used in the pharmaceutical industry as an excipient and in cosmetics as a pH adjuster. Its acidic properties make it useful in cleaning products and as a chelating agent in industrial applications. This versatile product is a key ingredient in many products and industries.