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  Home > JCE Print > Journal of Chemical Education > Issues > 2004  > January  >
In the Laboratory
The Preparation and Testing of a Common Emulsion and Personal Care Product: Lotion
Suzanne T. Mabrouk
Chemistry Department, The Citadel, The Military College of South Carolina, Charleston, SC 29409
Cover
January 2004
Vol. 81 No. 1
p. 83
Abstract
First-year chemistry students can readily prepare lotion from the emulsification of deionized water, humectant, emulsifier, emollients, thickener, and preservative. Three different lotion formulations are prepared so that students can study the effects of different emulsifiers and emollients on the quality of the final product. The purpose of the ingredients is discussed. The pH of the prepared lotions, commercial lotions, and the students' hands are measured. The students then compare the pHs to determine the appropriate lotions for their use. Students also learn how to identify the emulsion type for the prepared lotions and commercial lotions using several accepted methods: conductivity, fluorescence, and phase dilution.
Supplement
Instructions for the students and notes for the instructor are available.
*  Contents JCE2004p0083W.doc (Microsoft Word)
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*  Citation
 Mabrouk, Suzanne T. J. Chem. Educ. 2004 81 83.
*  Keywords
 Colloids; Conductivity; Consumer Chemistry; General Chemistry; Industrial Chemistry; Introductory / High School Chemistry; Laboratory Instruction; Nonmajor Courses
*  History
 Created:
Last Updated:		 December 8, 2003
February 18, 2005
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