Experiments Database

Login or Join Now


New in ASELL Chemistry...

Popular Tags:

Determination of vanillin in imitation vanilla essence

Posted on Jan 31 2011 by Mauro Mocerino, Sara Zadnik

12806 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.
  • /ol>
    Please sign in or register below to receive full access to this experiment:

    In this experiment:

    Recent Discussion:

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

    Posted: Apr 28, 2013 by Natsu I

    Join now or sign in to participate!