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  Home > JCE Print > Journal of Chemical Education > Issues > 2005  > April  >
Chemistry for Everyone
JCE DigiDemos: Tested Demonstrations
A Salicylate Sympathetic Ink from Consumer Chemicals
Stephen W. Wright
Pfizer Global Research and Development, Groton, CT 06340

checked by: Robert Hammond
Department of Chemistry, East Carolina University, Greenvile, NC 27858-4353

Cover
April 2005
Vol. 82 No. 4
p. 542
Abstract
A color-change reaction is described in which invisible writing on paper is made to appear as violet upon being sprayed with a liquid. The reaction uses chemicals readily available on the retail market: aspirin tablets, washing soda, vinegar, iron supplement tablets, and liquid chlorine laundry bleach.

Find this demonstration and others in the DigiDemos area of the JCE Digital Library.

More Information
*  Citation
 Wright, Stephen W. J. Chem. Educ. 2005 82 542.
*  Keywords
 Demonstrations; General Chemistry; Iron
*  History
 Created:
Last Updated:		 March 4, 2005
March 14, 2005
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