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Experiment 4 Preparation of Isoamyl acetate

Experiment 4 Preparation of Isoamyl acetate. H 2 SO 4. + H 2 O. H 2 O out. condenser. H 2 O in. clamp. heating mantle. Variac. ring clamp. 120 V. set Variac to ≈ 75% of line voltage. The reaction is heated to reflux

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Experiment 4 Preparation of Isoamyl acetate

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  1. Experiment 4 Preparation of Isoamyl acetate

  2. H2SO4 + H2O

  3. H2O out condenser H2O in clamp heating mantle Variac ring clamp 120 V set Variac to ≈ 75% of line voltage

  4. The reaction is heated to reflux • After 1 hour the reaction is cooled and water is added; the layers are separated and the organic layer is washed with NaHCO3 and separated. • The organic layer is dried over anhydrous MgSO4 or anhydrous Na2SO4. • The organic layer is distilled.

  5. Why do you heat the reaction? • Reaction rate doubles for an increase in 10 °C. • 2. Why do you use an excess of acetic acid? • 3. Why do you wash with NaHCO3? • 4. Why do you dry the isoamyl acetate? • The presence of water affects the distillation. • 5. Why do you distill the isoamyl acetate? • Distillation is an important way in which liquids are purified. Forces the equilibrium to the right. To neutralize the xs acetic acid and any H2SO4 present.

  6. Simple Distillation open to the air

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