The chemical formula of acetic acid is C2H4O2. Acetic acid is a colorless liquid organic compound, commonly known as vinegar, and is characterized by its pungent aroma and sour taste. It consists of two carbon atoms, four hydrogen atoms, and two oxygen atoms. Acetic acid is widely used in food preservation, flavoring, and various chemical processes. It plays an essential role in the production of various products, including plastics, solvents, and pharmaceuticals. In addition to its industrial applications, acetic acid is also a key ingredient in many household services, such as cooking and cleaning.