CH1012
                                         L1 /   
‹#›
                                         L1 /   
6
PURIFICATION
2. Purification of Organic Compounds
1) Crystallisation
• Relies on differences in solubilty of A and the impurities present.   (A is the cmpd. to be purified)
• The mixture is placed in conditions where the solution is saturated with respect to A
• A will therefore crystallize leaving
 the impurities behind. (eg. cooling)
• Often the final step ® high purity