The final product was also qualitatively assessed for odor and compared to the odor of the other esters and the starting products used in the reaction. The esters shared a sweet-smelling, fruity odor. The 1-propyl-propionate ester formed in the final product had a smell of pineapple or pear, which was distinguishable from the other esters which had a more banana like fragrance. The product also had a slight odor of alcohol, similar to that of nail polish remover, which ma be detectable traces of alcohol which was seen present in the IR spectrum. The starting components, 1-propanol and propionic acid did not share the fruity fragrance of the final ester and were instead unpleasurable scents. Both had a rancid odor, with the 1-propanol being similar to that of ethanol, another alcohol.
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