Acetic Acid (systematically named ethanoic acid) is one of the simplest carboxylic acids. organic compound with the chemical formula CH3COOH is a colourless liquid that when undiluted is also called glacial acetic acid and has a distinctive sour taste and pungent smell, classified as a weak acid, Acetic acid is one of the world's most important chemicals and is a key raw material for the production of Vinyl acetate monomer, Acetic anhydride and the Acetate esters. The most important esters are: Ethyl acetate, n Butyl acetate and Isopropyl acetate. Acetic acid is also used in the production of purified Teraphthalic acid (PTA), Mono chloro acetic acid (MCA) Carboxymethyl cellulose. Other acetic acid applications include food sauces and pickling, pharmaceuticals and textiles manufacturing.