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Discussion - Trimyristin

Submitted by sfairfield on Fri, 04/05/2019 - 11:49

          In this experiment, trimyristin was isolated via extraction from nutmeg using tert-butyl methyl ether. The product was recrystallized using acetone, and hydrolysis was performed to obtain myristic acid. The percent yield of crude trimyristin from nutmeg was 49.20 %. The melting point of the crude was 51 - 55 °C. The percent recovery for the first recrystallization of trimyristin was 39.68 %, and the melting point for this sample was 53 - 56 °C. The percent recovery for the second recrystallization of trimyristin was 65.64 %, and the melting point for this sample was 54 - 56 °C. The relatively low percent recoveries from the recrystallizations could have been due to the use of excess acetone. The known melting point for trimyristin is 56 - 57 °C, which is similar to, but slightly higher than, the experimental melting points, possibly due to the presence of impurities. The range of melting points became narrower from the crude sample, to the first recrystallized sample, to the second recrystallized sample, most likely due to the decreasing amount of impurities following each recrystallization process. The percent yield of myristic acid from trimyristin was 65.14 %, and the melting point was 51 - 52 °C. The known melting point of myristic acid is 54.4 °C, which is similar to, but slightly higher than, the experimental melting point, possibly due to remaining impurities in the sample.

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Comments

You use the phrase "similar to, but slightly higher than.." more than once. The phrase is also a little wordy, try to make it more concise. Perhaps instead of separating melting point and recrystallization percentage into two sentences, you could combine them:
"The percent yield of crude trimyristin from nutmeg was 49.20$ with melting point 51-55 degrees C"