FOERFARANDE FOER RENGOERING AV KOFFEIN

摘要

A process for the purification of caffeine which comprises carrying out the following steps in any order; a) recrystallisation of caffeine from an aqueous alkaline solution of caffeine containing a reducing agent and b) extraction of the caffeine from an aqueous alkaline solution of caffeine with a substantially water-immiscible solvent which is liquid under the conditions of the process.