Citric Acid Anhydrous is an organic compound that is classified as weak acid. This material is a solid and is in the form of a white crystalline granules (30-100 mesh size). Citric Acid is the most widely used organic acid and is most often a pH control agent in foods, beverages and pharmaceuticals. It is also an excellent chelating agent and is found in many household cleaning products. Our Citric Acid Anhydrous meets the requirements of the United States Pharmacopeia (USP), the Food Chemicals Codex (FCC) and other food and pharmaceutical agencies around the world.