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Determination of vanillin in imitation vanilla essence

Posted on Jan 31 2011 by Mauro Mocerino, Sara Zadnik

14042 views | 2 comments | MESSAGE
Tags: asell chemistry, analytical chemistry

Experiment Overview

In this experiment students will determine the concentration of vanillin in imitation vanilla flavouring. The method of analysis involves the following steps:

  • Extraction of the vanillin from the other components of the essence using an organic solvent, dichloromethane.
  • Extraction of the vanillin as its sodium salt into the aqueous phase using dilute sodium hydroxide solution.
  • Preparation of standards and construction of a calibration curve.
  • Determination of the concentration of vanillin in the aqueous extract by ultra-violet spectrophotometry.
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    Recent Discussion:

    "Why do you add dichloromethane into vanillin?..."

    Posted: Apr 28, 2013 by Natsu I

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