Lab Report Synthesis of Methyl Stearate

Synthesis of methyl radical radical Stearate
Post-Lab
Submitted by Matthew Sharma
TA: Evan

Determining the moderate Reagent
Methyl Oleate (MW= 296.49 g/mol)
Amount used = 1.141g
(1.141g)(1mol / 296.49g) = 0.003848 mol
? The limiting reagent for the chemical reaction is methyl oleate because hydrogen is used in excess

Theoretical Yield
Methyl Stearate
(0.003848 mol)(298.504g/mol production)
= 1.1486 g methyl stearate

Percent Yield
Given the 1:1 stoichiometry of the reaction:
100% x (0.2551g product / 1.1486g abstractive yield)
= 22.2%











Conclusion
A 22.2% yield of synthesized methyl stearate was obtained via the catalytic hydrogenation of methyl oleate in the presence of the catalyst 10% palladium on carbon. The product was centrifugated to remove the catalyst from the mixture and then filtrated and recrystallized to purify the methyl stearate product. The percent yield of the white crystal product whitethorn have been low due to incomplete hydrogenation of the methyl oleate, deep in thought(p) product in the filtration/ recrystallization process, and incomplete transfer between the centrifuge tube to a beaker.
The nuclear magnetic resonance spectrum of the purified product suggests that its identity is methyl stearate. The one peak at 3.



482 ppm indicates the OCH3 group, because the hydrogen atoms (HA) are attached to the highly electronegative oxygen atom. The CH3 hydrogen atoms observe no splitting because they have no neighbor protons (N=0) therefore it is a singlet. The three peaks at around 0.90 ppm represent the CH3 group on the opposite end of the molecule, because the three hydrogen atoms (HB) are uttermost(a) from the electronegative oxygen atoms and because the protons have two neighboring protons (N=2) indicating a triplet. The three peaks at around 2.40 ppm represent the CH3 group neighboring(a) to the C=O bond, because the hydrogen atoms (HC) have two neighboring protons (N=2) indicating a triplet and it is next to the electronegative double bond.
The NMR spectrum does...If you want to get a full essay, order it on our website: Orderessay



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