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SOC 202 Study Guide - Ester, Propionate, Ryerson University


Department
Sociology
Course Code
SOC 202
Professor
Tonya Davidson

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Fischer Esterification of Butyl
Propionate
Student Name: Winson Sun
TA Name: Jeffery Pau
Professor Name: Dr. R. Iyer
Course Code: CHY224
Course Section: 02
Date: September 30, 2014
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Introduction
The ester of which that is assigned for the Synthesis of an Ester via
Fischer Esterification Lab is butyl propionate. Esters are often the major
component with regards to the smell or taste of fruits and it is the same with butyl
propionate. Both flavour and smell of butyl propionate gives off fruity and banana
sensationi. Butyl Propionate is in the form of a colourless clear liquidh and it has a
melting point of -75oCc, a boiling point of 145oCc, a density of 0.875g/mLc, and a
molecular weight of 130.18g/molc. There are many different uses for butyl
propionate but it is mainly used in painting or similar practicesf. Some example of
uses that include butyl propionate are the coatings for many appliances, and the
repainting of automobilesf.
Generally, the formation of ester is done through the reaction between a
carboxylic acid and alcohol as the reactantse. As for butyl propionate, it will be
form in the fashion of propionic acid as the carboxylic acid and butanol as the
alcohol. The chemical formula for butanol is C4H9OH(aq) and the chemical
formula for propionic acid is C2H5CO2H(aq). The balanced chemical equation for
the reaction will be C4H9OH(aq) + C2H5CO2H(aq) <====> C2H5CO2C4H9(aq) +
H2O(l). As an alcohol, butanol is a liquid which is colourless and it gives off a
sweetish yet putrid odourg. It has a melting point of -90oCa, a boiling point of
117oCa,a density of 0.81g/mLa, and a molecular weight of 74.12g/mola. For
propionic acid, it is also a colourless liquidd and it has a melting point of -24oCb, a
boiling point of 141oCb, a density of 0.993g/mLb and a molecular weight of
74.08g/molb.
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