Experiment: Isolation of a Natural Product -- Eugenol
Week 9


A quick guide to interpreting 1-H NMR
Courtesy of the Chemistry Department of Randolph-Macon College



Before your quiz:

1. Turn on your hotplate to the setting that will achieve approximately 160 degrees Centigrade.
2. Soak your cloves in the recommended amount of water in the 25 ml Erlenmeyer flask. Presoaking will facilitate distillation of eugenol.


Weighing paper technique



The picture above is the general scheme for a weighing paper technique I learned as an undergrad. This is just a suggestion. If it works for you -- great! Refer to the Roman numerals when looking at the pictures below.





I. The weighing paper.
II. Fold the paper diagonally (fold a).
III. With the paper doubled-over as a triangle, make another fold as shown in the right photo (fold b).





IV. Open up the paper again and place it on the balance (in the same orientation as the previous photo).
V. Carefully place your sample on the weighing paper to the left of fold b.





Carefully pick up the paper and fold it as shown in the photos. Your sample is now securely held in the weighing paper and is ready to be poured into your flask/vial.