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Citation: ZHAO Hua-Rong, CAI Huang-Ju, QIN Min-Rui, YU Li-Ming, SHAO Dong-Bei. Analysis and Evaluation of Purity of Ethyl Acetate in the Esterification Reaction of Ethanol and Acetic Acid[J]. University Chemistry, ;2016, 31(9): 56-61. doi: 10.3866/PKU.DXHX201602015 shu

Analysis and Evaluation of Purity of Ethyl Acetate in the Esterification Reaction of Ethanol and Acetic Acid

Chemical Experimental Teaching Center, Zhejiang University, Hangzhou 310058, P. R. China

The gas chromatography method using internal standard and area normalization calibration and the NMR method using internal standard calibration are adopted for the determination of product purity in the synthesis of ethyl acetate. The purity of ethyl acetate detected by the GC internal standard method was the lowest. In contrast, the purity detected by the NMR internal standard method was the highest. The NMR internal standard method has more advantages, for this method can be used to complete the quantitative analysis and structural identification simultaneously, without the need to measure the correction factor.
- Portable nuclear magnetic resonance spectrometer,
- Gas chromatography,
- Purity,
- Internal standard method,
- Area normalization calibration
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