Fractional Crystallization a Purification Technique

 

Fractional Crystallization a Purification Technique

Fractional Crystallization

¨  Fractional crystallization is a purification technique for compounds from a mixture.

¨  This technique involves the mixing of compound with solvent.

¨  After mixing the solvent containing the compound is heated and then cooled gradually so that each chemical constituent of the mixture crystallize out gradually.

¨  In this way each component is removed from the mixture in its crystal form.

¨  Natural products are mostly present in crystal form naturally.

¨  General processes used for crystallization include concentration, slow evaporation and refrigeration.

Presented by

Muhammad Atif

PhD Scholar Pharmaceutical Sciences 

Abdul Wali Khan University Mardan, Pakistan