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Article

Removing Silicone Greases from Round Bottom Flasks

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Thomas J. Reilly

Loyola Marymount University, Loyola Boulevard at West 80th Street, Los Angeles, CA 90045-2699

J. Chem. Educ., 1996, 73 (4), p 381

DOI: 10.1021/ed073p381

Publication Date (Web): April 1, 1996

Abstract

If silicone greases are used on the standard taper joints of round bottom flasks, they will eventually get inside the flask, contaminating the contents and introducing spurious peaks into the IR and NMR spectra of samples. Removal of these deposits with solvents or conventional cleaning solutions is difficult. This article describes a fast and efficient method for removing the deposits.