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Frequently Asked Question
Questions asked by users might not always be phrased in the clearest way.
How do i know i made oleic anhydride when reacting oleic acid with p2o5, in anhydrous pyridine? or am i just supposed to guess/ believe that i made it?
Accepted Answer
You can confirm the formation of oleic anhydride by analyzing the product using techniques like:
NMR spectroscopy: The 1H NMR spectrum of oleic anhydride would show distinct signals for the anhydride group, which are different from those in the starting oleic acid.
Infrared spectroscopy: Anhydride functional groups have characteristic stretching vibrations around 1810-1750 cm-1 in IR spectra, which can be used to verify its presence.
Melting point determination: The melting point of oleic anhydride is significantly different from oleic acid. You can compare the melting point of your product with the known value.
Thin-layer chromatography (TLC): You can compare the Rf value of your product with that of oleic anhydride (a known standard) to determine its identity.
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