Extraction of an Essential Oil - PRE Lab
Name: Emily Elizabeth Travis
1 .Fill out the table of reagents. Be sure to include all compounds that will be used/isolated during the
experiment. Note: The table is expandable.
Reagent
Clove Oil
Eugenol
DI H2O
Ethyl
Acetate
Molecular
Melting/Boiling Density
Weight (g/mol) Point (°C)
(g/mL)
205.64.
BP- 251
1.06
MP- -9.1
BP- 253
30mL after
1.0652 g/ml
distillation
Mp- 0 BP- 100
1 g/cu cm
164.2g/mol
18.015 g/mol
MP- -83.6
88.11 g/mol
BP- 77
MP-93.5
Hexane
Amount
Needed
86.18 g/mol
BP- 68.7
5g
60mL
mol
Hazards
Other
Notes
0.024
eye
irritant
Save
some for
TLC
eye
irritant
Save
some for
TLC
3.3
--
0.9003g/ cu
10%
cm
n/a
skin
irritant
Make a
10% with
hexane
for TLC
to create
0.6606 g/cu 10% ethyl
cm
acetate in
hexanes
n/a
--
--
n/a
--
--
n/a
--
--
DCM
84.93 g/mol
MP- -95.1
BP- 40
1.33 g/cu
cm
Sodium
Sulfate
142.04 g/mol
MP- 884
2.671 g/cu
varies
cm
2 x 10mL
2 .Type out your detailed procedure for the lab experiment:
Weigh out 5g of ground clove bud.
Set up distillation apparatus
Add cloves, stir bar and 60mL DI H2O into 100mL round bottom flask.
Turn on water to condenser before turning on heating mantle - water needs to go into bottom of
condenser and flow out the top.
Set Variable controller to 50%
Distill 30mL distillate (cloudy white liquid), cool apparatus, deconstruct, transfer distillate to long stem
separatory funnel.
Save a small amount of oil for TLC
Extract with DCM (2x10mL)
Dry organic layer with Sodium Sulfate - remove sodium sulfate with vacuum filtration.
Collect DCM layer with product.
Run TLC (10% ethyl acetate in hexanes as solvent) to compare eugenol, clove oil and commercial clove
oil
Remove DCM using hot evaporation. Once dried, record mass and perform IR spectrum.
3 .What is the purpose of this experiment? Your response should be 1-3 sentences.
The purpose of this experiment is to extract eugenol from clove oil, using steam distillation. The
differences in boiling point between solvent and solute will create a steam that can be extracted and
separated so the solvent will be isolated. Using the differences in temp required for changes from a
liquid to a gas allows for this.