C2H4O2, commonly known as acetic acid, is a colorless liquid organic compound with a pungent smell. It is the main component of vinegar, which typically contains about 4-8% acetic acid. Acetic acid is widely used in food preservation, flavoring, and as a chemical reagent in various industrial processes. In addition to its culinary uses, acetic acid plays a significant role in the production of synthetic fibers, plastics, and solvents. It is also utilized in the manufacture of acetate esters, which are important in the production of paints and coatings.