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  Home > JCE Print > Journal of Chemical Education > Issues > 1995  > September  >
Laboratory Experiments
The Extraction of Caffeine from Tea: An Old Undergraduate Experiment Revisited
Scott D. Murray and Peter J. Hansen
Northwestern College, Orange City, IA 51041
Cover
September 1995
Vol. 72 No. 9
p. 851
Abstract
The extraction of caffeine from tea leaves is a common organic chemistry experiment. A water/1-propanol/sodium chloride ternary system was found to be a suitable replacement for the more traditional water/organochlorine solvent systems. Approximately 80% of the caffeine in the tea leaves can be recovered as crude caffeine. The ternary system employs chemicals which are not only less expensive, but also less toxic.
More Information
*  Citation
 Murray, Scott D.; Hansen, Peter J. J. Chem. Educ. 1995 72 851.
*  Keywords
*  History
 Created:
Last Updated:		 10/1/1999
5/22/2006
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