Acetic acid is a clear, colorless, organic liquid that, when undiluted, is also called glacial acetic acid. Acetic acid is the main component of vinegar and has a distinctive sour taste and pungent smell. Liquid acetic acid is a hydrophilic solvent, similar to ethanol. With a moderate relative static permittivity, it dissolves not only polar compounds, but also non-polar compounds such as oils and elements such as sulfur and iodine. It readily mixes with other polar and non-polar solvents such as water, chloroform and hexane.