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Nitration Of Methyl 3-Metazoate

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Nitration Of Methyl 3-Metazoate
Recrystallization of Methyl 3-nitrobenzoate
Santiago Horta, Daniella I
School of Chemistry and Biochemistry, Georgia Institute of Technology
Atlanta, GA 30332
Submitted: 18 February 2015

In this experiment, the product of a nitration will be purified by recrystallization using a selected solvent. Methyl benzoate is treated with nitric acid and sulfuric acid to obtain methyl 3-benzoate, which will be mixed with a solvent that will dissolve the product at its boiling temperature but not at room temperature. Comparing the melting point of both the crude and recrystallized product with that known for methyl 3-benzoate will check its purity. This process is important to learn how to use a compound’s properties for picking a solvent for a process as well as identifying a substance. A purified product will show a melting point close to that of methyl 3-benzoate, 78 ºC.

Introduction:

The objective of this experiment was to complete a nitration of methyl benzoate with nitric acid and sulfuric acid. Its product would then be recrystallized with a picked solvent and melting point of both crude and pure products were tested to check for …show more content…
After everything is added, the mixture is removed from the cold temperature and mixed intermittently to ensure proper interaction between substances. Then it is cooled again to precipitate the product and separate it from some of the impurities. For further purification the product is recrystallized. A solubility test was performed on water, acetone, and methanol to pick a solvent for this process. For a substance to be optimal for recrystallization, the product has to be insoluble at room temperature and soluble at the solvent’s boiling point1. The selected solvent will allow everything to dissolve at its boiling point but the product to precipitate at room temperature, thus separating it even more from
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