Esterification Essays

Experiment 10: Fischer Esterification Discussion In this experiment, a Fischer esterification reaction was performed in order to create methyl benzoate from benzoic acid and methanol. Then, a GC was performed to confirm that methyl benzoate had indeed been formed. An ester is an often sweet smelling organic compound which contains a carbonyl carbon bonded to an oxygen connected to another hydrocarbon. Esterification is the process by which esters are synthesized from an alcohol and a carboxylic acid

Procedure :- A) Fischer Esterification 's Procedure ( Direct esterification of a carboxylic acid with an alcohol ):- 1- Choose any pair of these caboxylic acids and alcohols . When using excess alcohol, a molar ratio 4:1 is used in the procedure. 2- Mix 0.48 mol methanol with 0.12 mol butyric acid in a dry round bottom flask . 3- Add 0.05 moles of concentrated sulphuric acid to round bottom flask very slowly and carefully then put a magnetic stirrer . 4- Set up reflux system using a clean and

The Esterification of Butyl Ethanoate Aim: The aim of this experiment is to investigate the production of the ester, butyl ethanoate. Introduction: Esters have distinctive odours and flavours, therefore are heavily used in artificial flavourings and fragrances. These odours can range from pineapple, pear, strawberry, banana, cinnamon, lemon, apricot, cherry, raspberry, butter cream, peppermint, orange, honey and much more (Newworldencyclopedia.org).Like all organic compounds esters can be categorized

5. Results and Discussions 5.1 Methyl erucate synthesis 5.1.1 Chemical analysis of erucic acid Physicochemical properties of erucic acid used for the synthesis of sucrose erucate were analyzed. The results of analysis are depicted in Table 5.1 Table 5.1 Analysis of erucic acid Acid value 166.03 ± 0.9 mg KOH/gm Iodine value 78.04 ± 1.2 g I2/100gm Saponification value 168.05 ± 0.8 mg KOH/gm 5.1.2 Analysis of methyl erucate After synthesis and purification of synthesized methyl erucate general characteristics

the experiment. Esterification involves the transformation of a carboxylic acid into an ester which is exactly what was performed in the experiment. The esterification technique is an important and reliable technique used in organic chemistry. The experiment proved that with the execution of proper techniques, esterification is the a very efficient method regardless of the results obtained in this experiment. The experiment demonstrated the effectiveness of the esterification through the

Methyl Benzoate Name: Conor Fitzpatrick Student number: C14740151 Course code: DT422/2 Report submission date: 02/03/16 Aims • To convert benzoic acid and produce methyl benzoate by Fischer esterification. • Learn reaction mechanism involved in esterification. Benzoic acid + methanol  Methyl benzoate + water Introduction The ester functional group can be synthesized a number of different ways. These esters have very pleasant aromas and contribute greatly to the flavour

In this laboratory experiment, 3.030 g of Isopentyl Acetate was synthesized and formed by the esterification of acetic acid with Isopentyl Alcohol. 1.0 mL of Sulfuric acid was used as a catalyst in the reaction. The excess Isopentyl Acetate was used to shift the reaction to the right for esterification to occur. During the extraction, the excess of acetic acid and Isopentyl alcohol was extracted with sodium bicarbonate, and further purification of the Isopentyl acetate was done after through drying

and esters. In the case of hydrolytic reaction, the steam produced during the processing of food containing water causes the hydrolysis of triglycerides, resulting in the formation of free fatty acid, glycerol, monoglycerides, and diglycerides. High free fatty acid level, i.e. quantum of free fatty acids greater than 1 mg/g KOH, results in generation of high amounts of undesirable soap simultaneously with transestrification reaction. In the alkali-catalyzed process, the presence of free fatty acid

evaluates the effect of individual and interaction effects of the process parameters on the corresponding response value. In preliminary single factor method analysis the molar ratio, enzyme loading and temperature were showing significant effects on esterification synthesis, thus these variables were selected for study response surface methodology. Design Expert 7.0 software was used for the designing the experiments and for analysis of the data. According to central composite design (CCD), 20 experiments

The degree of Esterification in sweet lime pectin was found to be 86.69% and 45.4% at pH of 1.5 and 2 respectively. However, in the case of pomegranate pectin it was 95.36% and 95.54% at pH of 1.5 and 2 respectively. The highest methoxyl content (11.966%) was obtained in

represents the time progression for the enzymatic esterification of ethanol and hexanoic acid with 1:1 substrate ratio by Novozyme 435 (2 %) at 50 ˚C. It was observed that percentage conversion of ethyl hexanoate reached up to 73.6% in the initial 120 min. However, as the reaction proceeds further, a marginal change in conversion was observed after 120 min because of equilibrium of the reaction. This is attributed to the reversible nature of the esterification reaction. The slow rate of reaction after initial

first part of the lab regarded an esterification leading to the formation of Methyl Benzoate (C8H8O2). The purpose of this lab was to convert benzoic acid to methyl benzoate by means of utilizing a reflux acid catalyzed reaction with methanol; purity of the final product was assessed by means of both proton and carbon NMR. The extent to which a reaction’s products are reverted back into the original reactants is denoted by the equilibrium constant. The esterification reaction that's taking place in

There are three main types of ester hydrolysis reactions: base-facilitated hydrolysis (saponification), acid-catalyzed hydrolysis (with the reverse reaction the Fischer Esterification), and enzymatic hydrolysis, triggered by lipases. Base-facilitated hydrolysis generally uses aqueous NaOH as a reagent, providing the base that attacks the carbonyl and begins the hydrolysis. Saponification hydrolyzes esters into carboxylic acids

Abstract – Methyl trans-cinnamate is an ester that contributes to the aroma of strawberry. It can be synthesized by an acid-catalyzed Fischer esterification of a methanol and trans-cinnamic acid under reflux. The solution was extracted to obtain the organic product, and evaporated residual solvent The yield was 68%, but there is some conflicting data regarding the purity. The melting point, IR, GC-MS indicate a highly pure desired product whereas 1H NMR shows there are unreacted reagents still present

WHAT IS IT USED FOR? Perfumes have multiple uses but the most common one is that it is used to make a person smell better by adding a pleasant smelling fragrance to themselves. Perfumes have been around for as long as 2000 BC. In 1190 Perfumes started to be produced for commercial use in Paris and from there flourished into the mass industry. Moreover, There are so many reasons why people wear perfumes and one of them would be that it makes people happy. Although the reason it makes a person feel

was used primarily in skin preparation. It was also an ingredient of many sunburn preparations1. The structure of benzocaine included an aromatic ring and amine group. The reaction to synthesize benzocaine was known as a Fisher esterification reaction. The Fisher esterification was reaction between alcohol and carboxylic acid in the presence of acid. The reaction was used to form an ester. In the experiment, sulfuric acid acted as a catalyst and necessary for this reaction to occur. There was a change

Experiment 4: Formal Report Preparation and Recrystallisation of Aspirin Aim of the experiment: In this experiment, a pure sample of aspirin is to be obtained through esterification to synthesise the sample, then purify the sample by recrystallisation. Lastly, determine the melting point of the sample to characterise the aspirin. Introduction: Background Aspirin (acetylsalicylic acid) is an aromatic compound that contains an ester- functional group and a carboxylic acid- functional group. Aspirin

Report Purpose The purpose of this lab was to synthesize methyl benzoate from benzoic acid and methanol through Fischer esterification. The identity of the product was verified through IR, GC, and 1H-NMR analysis, where the experimental readings were compared to known readings of methyl benzoate. Furthermore, a percent yield of the product was calculated. In Fischer esterification, a carboxylic acid is converted to an ester by replacing the carboxyl alcohol group (-OH) with an ether (-OR). The acid

Biodiesel is produced from vegetable oils, used cooking oils, and animal fats by the production process called “trans-esterification” to convert those mixtures to the chemicals which have long chain mono alkyl esters or fatty acid methyl esters which can be used as “fuel” for vehicles. Approximately, 100 pounds of vegetable oil react with 10 pounds of alcohol (commonly methanol) in the presence of a catalyst, sodium hydroxide; later, 100 pounds of biodiesel and 10 pounds of glycerol (co-product)

INTRODUCTION Figure 1: Molecular Structure of PET PET (or PETE) is also known as polyethylene terephthalate or (C10H8O4)n. Its natural state is a colorless, semi-crystalline resin when combined with other materials like glass fiber or carbon nanotubes, it increases the material’s strength. Polyethylene terephthalate melts at 260°C and Amorphous density (at 25oC) is 1.33 g/cm3. PET can be produced by 2 different reactions as a product of polymerization. The first reaction is between ethylene glycol