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  Home > JCE Print > Journal of Chemical Education > Issues > 1995  > October  >
Features
Safety Tips
The Use of Erythrosin B in Undergraduate Spectrophotometry Experiments
L. James Stock III
Central Michigan University, Mt. Pleasant, MI 48859
Cover
October 1995
Vol. 72 No. 10
p. 926
Abstract
The CMU chemistry department has met regulatory and waste disposal concerns by using a non-toxic food color in a general chemistry experiment. Erythrosin B was found to be a suitable alternative to Sodium Dichromate when teaching solution preparation and the principles of spectrophotometry. Students weigh a small mass of Erythrosin B and prepare several solutions that are measured in a spectrophotometer. From these a Beer's Law plot is constructed. Finally, concentrations of unknown solutions are determined using the spectrophotometer and the Beer's Law plot.
More Information
*  Citation
 Stock, L. James, III. J. Chem. Educ. 1995 72 926.
*  Keywords
*  History
 Created:
Last Updated:		 10/1/1999
5/22/2006
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