Aim: To synthesis phthalimide from Phthalic anhydride
Chemicals: Urea: 1 gram, Phthalic
anhydride: 5 gram
Glassware: Round bottomed
flask 250ml capacity,Beaker oil both
(Heavy paraffin), Beaker.
Reaction:
Cyclic anhydride (Phthalic anhydride) heated with urea/ammonia/ ammonium carbonate to get cyclic imide Phthalimide.
Procedure:
1. Place together urea and Phthalic anhydride
in a clean 250 ml RBF
2. Heated on oil bath gradually till both
solids melts and heating is continued till get frothing appear
3. Discontinue the heating and leave the
reaction mixture to cool the reaction mixture become solid mass
4. Add 50 ml of ice cold water to disintegrate
the solid in to powder.
5. Filter phathalimide off and dried in oven,
6. Purified and the dried yield is calculated
and submitted
Melting
point: 238 °C (460 °F)
Boiling
point: 336 °C
Yield: 2.5 gm
