Those who want to analyze the infrared spectra of ethyl acetate today. Looking at the spectra, the position and shape of each peak should be carefully examined. In the high frequency region, at about 3000-2850 cm ¬, the saturated C-H stretching vibration peak can be seen, which is caused by the C-H bond vibration between methyl and methylene in ethyl acetate. Near 1740 cm ¬, there is a strong and sharp peak, which is the stretching vibration peak of carbonyl (C = O), characterizing the characteristics of carbonyl in ethyl acetate.

Between 1380-1460 cm ¬, the symmetric and asymmetric bending vibration peaks of methyl can be observed, and their peak shape and intensity can provide clues for analysis. However, in the range of 1250-1050 cm, it is the C-O stretching vibration peak, and the peaks at different positions correspond to the C-O bonds in different chemical environments.

To accurately analyze this spectrum, one must be familiar with the infrared absorption characteristics of various functional groups, and comprehensively consider the relationship between each peak. Only then can the molecular structure and chemical environment of ethyl acetate be used to accurately analyze the infrared spectrum.