Glacial Acetic acid contains a smaller amount of water and is called water-free acetic acid. Its melting point is 16.6 °C. Glacial acetic acid forms ice like crystal.Glacial acetic acid is used as a solvent in Photography film,It is also used in preparation of Dyes and ink.It is also used as food preservative and acidity regulatory.In pharmaceutical it is used as a solvent in production of drugs.