Esterification Essays

  • Ester Esterification Lab Report

    718 Words  | 3 Pages

    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

  • Methyl Erucate Analysis

    2066 Words  | 9 Pages

    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

  • Aspirin Synthesis

    864 Words  | 4 Pages

    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 Synthesis

    905 Words  | 4 Pages

    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

  • Waste Cooking Oil Case Study

    1002 Words  | 5 Pages

    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

  • Ethyl Hexanoate Lab Report

    1479 Words  | 6 Pages

    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

  • Pectin Case Study

    1137 Words  | 5 Pages

    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

  • Methyl Benzoate Lab Report

    1000 Words  | 4 Pages

    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

  • Ethyl Hexanoate Study

    1408 Words  | 6 Pages

    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

  • Benzocaine Synthesis Lab Report

    536 Words  | 3 Pages

    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

  • Methyl Trans-Cinnamate Lab Report

    1399 Words  | 6 Pages

    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

  • 1190 Perfume Research Paper

    1294 Words  | 6 Pages

    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

  • Polyethylene Terephthalte Lab Report

    1282 Words  | 6 Pages

    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

  • Recrystallisation Of Aspirin Lab Report

    1772 Words  | 8 Pages

    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

  • The Pros And Cons Of Biodiesel

    1395 Words  | 6 Pages

    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)

  • Aspirin Melting Point Analysis

    938 Words  | 4 Pages

    The melting point of the experimentally synthesized Aspirin product was found to be between 126-129 ˚C. This temperature range of initial to final melting point has a small and sharp temperature range of only 3˚C, which is within the acceptable limits of the 128-137˚C1 literature value for Aspirin (Acetylsalicylic Acid/2-acetoxybenzoic acid), if located slightly toward the beginning of the literature melting temperature range. Therefore, the narrow melting point range, which falls within the standard

  • Sequalene Synthesis Lab Report

    1502 Words  | 7 Pages

    Squalene undergoes a two-step cyclization to yield lanosterol catalyzed by sequalene mono-oxygenase and sequalene 2, 3 epoxidase enzymes. Sequalene mono oxygenase is the second committed step in cholesterol biosynthesis and lead to the formation squalene 2, 3 epoxide. This enzymatic reaction require supernatant protein factor (SPF) and NADPH as a cofactor to introduce molecular oxygen as an epoxide at the 2, 3 position of squalene. The activity of supernatant protein factor itself is regulated by

  • React Ethanoic Acid And 1-Butanol Lab Report

    755 Words  | 4 Pages

    reactant flask and the flask is swirled while adding the acid. Additional of concentrated sulfuric acid is to use as a catalyst to increase the rate of reaction by donating a proton to the oxygen atom in carboxylic acid to allow for the mechanism for esterification and thus, the satisfactory yield of ester can be achieved. Moreover, it acts as dehydrating agent, forcing the equilibrium to the products and lead to a greater yield of ester. After the addition of trace amount of concentrated sulfuric acid

  • Esters Lab

    839 Words  | 4 Pages

    the goal was to form an ester and prevent the reverse reaction from occurring. An incorrect molar ratio could prevent the completion of this reaction, and impede this goal. Conclusion: In this lab, the production of esters and the process of esterification was studied. Concepts learned include molar ratio calculation, and ester constituents (carboxylate acid and alcohol). In addition, the use of a cold finger condenser and its purpose in ester reactions was discovered. The effects of drierite on

  • Observation: Adding Sulfuric Acid Solution

    1879 Words  | 8 Pages

    Observations Step Observation Adding sulfuric acid into the alcohol and carboxylic acid solution Surface of the round bottom flask is warm Poring the ester solution in the bottle after reflux Dense gas can be seen Washing the ester with distilled water The ester layer is immiscible with distilled water. Washing the ester with sodium carbonate solution Effervescence -bubbles of gas produced -a ‘pop’ sound could be heard when the separating funnel is closed and opened again. The ester layer