Ethyl acetate

compared to a methyl salicylate sample and a standard aspirin tablet sample, see figure 1. The samples were applied to its designated line on the TLC plate and the plate was placed in an elution solvent consisted of a 50:50 mixture of hexane and ethyl acetate. About 1 mg of the final product was dissolved into 0.5 mL of elution solvent and later the product’s IR spectrum was obtained, see figure…

Abstract: Chemiluminescence is an essential topic in the study of chemistry. The reaction involves mixing two chemicals were to form an excited (high-energy) intermediate that releases energy as light. This experiment first synthesized luminol by reducing 5-nitro-2,3-dihyodropthlazine-1,4-dione, using sodium hydrosulfite (Na2S2O4) and 3M sodium hydroxide (NaOH). The amount of luminol collected was 0.2693 g with the percent yield of 161%. The product of the first reaction was then used to…

According to Chemguide, Chromatography is a physical method that is used to separate a mixture of chemical substances into its components, which then can be closely analyzed. All forms of chromatography share this same principle. Here, a mobile phase travels through a stationary phase, carrying the components of the mixture with it. It is possible that the mobile phase and the stationary phase have similarities or differences that affect the overall interaction between each other and the…

My group had been given a specific task to investigate according to the lab manual1. We were employed by the Environmental Protection Agency as chemists. Our task is to identify an unknown compound that was found in a nearby landfill. In this laboratory, the unknown compound was given to us by our TA. The main goal of this experiment was to correctly identify the unknown compound. We also wanted to discover as many chemical and physical properties as possible. Physical properties are those that…

armenica seeds was extracted according to method outlined by Han et al. [19] with slight modification. The seeds were soaked in distilled water for 24 hr at room temperature, washed with distilled water, grounded with chilled ethyl acetate, air dried and stored at 4 °C. The dried powder material was termed as meal. The crude HNL was prepared by suspending this meal in distilled water (7.4 g/100mL). The pH of the extract was adjusted to 7.4 with 1N NH4OH to (for best effective extraction…

Here we will discuss about Claisen ester condensation reaction. 1. Claisen ester condensation – Here we are taking specific example of Ethyl acetate (CH3COOET). When ethyl acetate is treated with strong base like –OET and then the reactants are refluxed then they produces a β-keto ester via several steps. In this case also the last step is most important because it helps to drive the equilibrium of every…

and reference. And the sample one we start from left to right: Anacin Excedrin Bufferin Tylenol and reference. It is important that the spots have to be small. Then put reference plate in a wide mouthed screwcap jar with 0.5% glacial acetic in ethyl acetate about 0.5cm depth. Wait for solvent rose to about 0.5cm from the top, take the reference plate out and using a lead pencil, mark the position of the solvent front. Then dry it, and observe it under a short-wavelength UV lamp. Mark the spot…

solution was stirred for a further 18 hours following which two aliquots of hexanes (100ml) were added. The solution was filtered through a pad of silica, and then concentrated in vacuo and the product was purified by column chromatography (10% ethyl acetate in hexanes) to give a colourless oil (1.21 g, 9.30 mmol) Yield 20%, Literature 36 – 89%. 1H NMR (300 MHz, CDCl3) d 7.43-7.41 (m, 2H), 7.35-7.31 (m, 2H), 7.26-7.22 (m, 1H), 6.80 (dd, J = 16, 10 Hz, 1H), 6.58 (d, J = 16 Hz, 1H), 6.52 (dd, J =…

Which nail polish should the entire female population wear in order to get the longest wear? In order to discover the answer to this question one must explore when nail polish was invented and which ingredients were used to create it. Also, investigate the different types and the chemicals. Nail polish was first created in China around 3000 BC. It was made from beeswax, egg whites, gelatin, and vegetable dyes. The polish was used to distinguish upperclassmen from the general population. Among…

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