acetate via Fischer esterification reaction between acetic anhydride and isoamyl alcohol‚ using concentrated sulfuric acid as a catalyst. This reaction is characterized by the combining of an alcohol and an acid (with an acid catalyst) to yield and ester plus water. In order to accomplish this reaction‚ the reactants were refluxed for 30 minutes at 80 degrees Celsius ‚to yield a mixture‚ the mixture was then mixed with sodium hydrogen carbonate and dried with anhydrous sodium sulfate. The product obtained
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Functional Groups of Organic Compounds A functional group is a specific arrangement of atoms in the HC derivative other than carbon and hydrogen. Literally‚ the functional group determines the functions of the particular HC derivative in chemical reactions. This means that the specific properties of the HC derivative are due to its functional group. Each functional group is attached to an alkyl radical (R). An alkyl radical is one H atom less than the given alkane. The alkyl radical (R) uses
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5mol/L hydrochloric acid until the endpoint is reached. EP is determined by the maximum inflexion point on titration curve. R COOH + KOH KOH + HCl → → R COOK + H2O KCl + H2O 2.Reference 1) JIS K 0070-1992 Test Method for Acidity‚ Saponification value‚ Ester value‚ Iodine value and Hydroxy value of Chemical products and Unsaponifiables 2) ASTM D 5558-95 Standard Test Method for Determination of the Saponification Value of Fats and Oils 3) ISO 3657 : 2002 Animal and vegetable fats and oils – Determination
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an Acetic Acid Ester Abstract: 14.1 g of octyl acetate were synthesized from the esterification process using 20.0 ml of acetic acid and 17.9 g of n-octanol. The theoretical yield was 23.8 g of octyl acetate. The percent yield was 59.2%. The purification of the final ester was confirmed by boiling point (186-199°C) and infrared index (nD=1.419). It was a colorless liquid that had a slight fragrance of orange and indescribable chemicals. The Infrared spectra confirmed ester peaks: two C-O
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Coco Methyl Ester (CME)/ Biodiesel You may be perhaps heard several rumors regarding Coco methyl ester (CME) or also recognized as Biodiesel. Biodiesel is a substance that can boost and make your automobile run better. This substance comes from coconut oil and goes through into a procedure called as esterification. It is not come from a typical crude oil‚ which is normally being imported from different oil-producing nations. After extorting the coconut oil from copra or dried coconut meat
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23%. The characteristics of the synthesized ester were liquid‚ oily‚ and it had a banana smell. Introduction Artificial flavoring is commonly used in the food that we eat today. For example‚ fruit flavoring is a chemical mixture that mimics a natural flavor as that of banana flavor from the synthesis of isoamyl acetate. Ester is the functional group‚ which is responsible for the distinctive odor and taste that artificial fruit flavoring has. Esters are derived from carboxylic acids. A carboxylic
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acetic acid and Isopentyl Alcohol‚ using a strong acid as a catalyst. The product was washed‚ and distilled. This approach is called Fisher esterification‚ whereby esters are produced by the esterification of a Carboxylic acid where it is heated with an alcohol in the presence of a strong acid which acts as a catalyst. The ester produced had a banana flavor. The extraction of the crude product was conducted using sodium bicarbonate followed by distillation. The resulting product obtained was
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that all the alcohol was extracted and the final product was banana oil. Purpose The purpose of our lab was to reflux an isopentyl alcohol with carboxylic acid (acetic acid)‚ adding three drops of sulphuric acid acting as a catalyst to produce an ester (isopentyl acetate) and water. We verified our answers using infrared spectroscopy. Calculations for Percent Yield To find the percent yield we had to first find moles of our limiting reagent. 1) Weight of 5mL vial + cap
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achiral ketene via the acid chloride by adding thionyl chloride followed by triethylamine. Then‚ ketene was reacted with a chiral and nonracemic (S)-ethyl lactate produces a mixture of diasteromeric esters of ibuprofen derivatives where (S) configuration is predominantly. Finally‚ hydrolysis of the ester then provides (S)-ibuprofen in a relatively high yield. all reaction were monitored by TLC at room temperature with appropriate solvent system which states in experiment section. IR‚ 1H-NMR‚ 13C-NMR
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Submitted: September 13‚ 2012 ------------------------------------------------- Abstract Carboxylic acid derivatives namely‚ acyl halides‚ acid anhydrides‚ esters and amides were classified through different reactivity tests. The samples used were acetyl chloride for acyl halide group‚ acetic anhydride for acid anhydride group‚ ethyl acetate for ester group‚ acetamide and benzamide for amide group. These derivatives were identified through the mechanism of hydrolysis‚ alcoholysis and aminolysis reactions
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