finished‚ resulting in the existence of the finest grain structure. Owing to the relatively lower temperature‚ the ferrite and pearlite‚ which are represented by the white and dark areas respectively are both much finer. This shows complete recrystallization. * the transition zone is the region where
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Yield Data The reaction of 0.139 grams of trans-cinnamic acid‚ 0.8 mL of glacial acetic acid‚ and 1.0 mL of 1.0 M of Bromine in acetic acid was recrystallized to form a solid‚ clear‚ crystal- like product. The melting was taken from the recrystallized product to determine what had been obtained. The melting point was found to be 130.5°C-133.7°C. Concluding that the product formed from the addition of bromine was a mixture of the erythro-2‚ 3-dibromo-3-phenylpropanoic acid‚ which has a known melting
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the reflux is complete‚ sulphuric acid will be added to the refluxed solution‚ which will cause the salicylic acid to precipitate. This will then be filtered through suction filtration. Once the product has dried‚ purification must be done by recrystallization; dissolving the product in a minimum amount of hot solvent (water)‚ and then filtering once again through suction filtration. Finally‚ to complete the main purpose of the experiment‚ which is to compare the prepared product with a standard (salicylic
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I. INTRODUCTION Synthesis Acetylsalicylic acid is an acetyl derivative of salicylic acid which appears as a white and crystalline and a weakly acidic substance with a melting point of 135°C and is also known to be aspirin. It is one of the most widely used drugs that can lower fever and is used as a painkiller. According to (Escobel‚ 2011)‚ Aspirin is synthesized through the reaction of salicylic acid with acetyl anhydride that causes a chemical reaction that turns salicylic acid’s hydroxyl group
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mixing and then allow to sit still for 15 minutes. we then added the product in a beaker than contain 10 grams of ice. We then vacuum filter the product and wash the crystals with cold water and cold methanol. We then began the recrystallization process. During the recrystallization process‚ the product was a white chucky large crystals‚ when the boiling methanol was added there was a color change from white to yellow. The color change was due to the conversion of aromatic properties. We then place solution
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Over 40% of medicinal chemicals in the world were developed from isolation of the natural source. These sources were from fungi‚ plants‚ bacteria‚ animals‚ etc. The techniques used to isolate and purify has been by extraction‚ distillation‚ recrystallization‚ and chromatography. In this experiment we will be trying to obtain a pure organic compound from a natural source. Because this natural source it is not only trimyristin and myristic acid that makes it up‚ it’s a mixture of many compounds. Although
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Crane hooks Today in this report I will explain how the forged hook is better compared to a cast hook. My reasons towards this decision are later discussed throughout this report. Forging is referred to as the shaping of a metal through the use of compressive force; forging can be classified as hot or cold and will be explained later in the report. Casting is referred to as when a liquid metal is poured into a desired mould‚ cooled then removed. Both of these manufacturing processes have
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Experiment # 45: Benzocaine Abstract The local anesthetic‚ benzocaine‚ was synthesized via the esterification of p-aminobenzoic acid with ethanol. The percent yield of crude product was determined to be 21% and the melting point was recorded at 86.2°C ± 0.2°C‚ with a 6.3% error from 92°C‚ the literature melting point of pure benzocaine. The crude product was then recrystallized to improve the purity of benzocaine and 57.4% was recovered. The new melting point range was measured at 89.1°C ±
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(aspirin)‚ and to become familiar with the optimum conditions needed for successful yields. Aspirin is produced from an acid catalyzed reaction between salicylic acid with acetic anhydride. The crystalline aspirin is synthesized and purified by recrystallization‚ although there is not a hundred percent yield due to sources of error. Introduction Aspirin is a medicine commonly found in households around the world. It also is one of the least expensive and most useful drugs in the market. A Chemist named
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Trimyristin is an ester with the chemical formula C45H86O6 that can be isolated from the common spice nutmeg. The seed of the evergreen trees in the genus Myristica Fragrans is what nutmeg is obtained from. Trimyristin is the triglyceride of myristic acid also known as saturated fat (3). The phase of trimyristin is solid and is only found soluble in dichloromethane‚ chloroform‚ ether‚ benzene‚ and ethanol (1). Only twenty to twenty-five percent of trimyristin makes up the mass of nutmeg and it
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