Solvent Extraction Using Safe and Commonly Available Materials to Demonstrate the Difference in Solubility of Two Mixed Solutes

Document Type

Article

Publication Date

2003

Abstract

A blue, aqueous solution of copper(II) sulfate is mixed with a red ethanolic solution of sudan III forming a purple solution. This mixture is extracted with a nonpolar solvent, resulting in the separation of the red and blue compounds. The nonpolar solvent may be kerosene, vegetable oil, mineral oil, or hexanes. Notes on handling are included.

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