AN IMPROVED PROCESS FOR THE PREPARATION OF SUCRALOSE OF HIGHPURITY

摘要

The present invention relates to an improved process for the preparation of Sucralose having purity of at least 99.6% comprising steps of (i) dissolv ing substantially impure Sucralose in water; (ii) treating the solution obta ined in step (i) with a partially water immiscible solvent; (iii) washing th e said solvent phase obtained in step (ii) with an amount of water sufficien t to remove polar impurities; (iv) crystallizing the product from partially water immiscible solvent; (v) recrystallizing the solid obtained in step (iv ) from water.