"Recrystallization of acetanilide" Essays and Research Papers

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    : Paracetamol (325mg)‚ a non-opioid and non-salicylate analgesic. It is indicated for the treatment of moderate to severe pain. Name Acetaminophen Drug Type Small Molecule Approved Description Analgesic antipyretic derivative of acetanilide. It has weak anti-inflammatory properties and is used as a common analgesic‚ but may cause liver‚ blood cell‚ and kidney damage. Synonyms Acetaminofen Paracetamolo Paracetamol Brand Taken Crocin - Remidex Pharma Calpol -

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    kevin

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    Journal of Medicine‚ 287-289. Loscalzo‚ E. H. (2014). cardiovascular drugs- aspirin. Retrieved from American Heart Association: http://circ.ahajournals.org/content/101/10/1206.full.pdf LZ‚ B McMaster. (1997). Microscale Laboratory Techniques - Recrystallization. Retrieved from McMaster University : http://www.chemistry.mcmaster.ca/~chem2o6/labmanual/microscale/ms-recrs.html MedicineNet.com MyDr. (2009‚ 11 09). Paracetamol for children. Retrieved from MyDr: http://www.mydr.com.au/babies-pregnancy/paracetamol-for-children

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    Recrystallization Description of Technique/Process Recrystallization is the process of purifying solids based on their different solubilities. The steps involved in recrystallization are: a. Find a suitable solvent for the recrystallization; b. Dissolve the impure solid in a minimum volume of hot solvent; c. Remove any insoluble impurities by filtration; d. Slowly cool the hot solution to crystallize the desired compound from the solution; e. Filter the solution to isolate

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    Organic Lab 2583-4

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    Adeoti Taylor Chem2583 Organic Chemistry Laboratory Class ID:8622098 Organic Lab 2 2583-04 Instructor: Andy Szalkiewicz 9/30/2014 Recrystallization Objective/Abstract: The purpose of this lab is to purify solids contaminated by relatively small amount of impurities by a technique called Recrystallization. Compounds that have different solubility at different temperature usually can be recrystallized. Formulas and Structures: Benzoic Acid Methanol Percent Recovery: Indicates how much of the

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    The Purity and Purification of Solids- Part 2- Recrystallization Courtney Percival CH 337 Laboratory‚ Section 037 Department of Chemistry Portland State University‚ Portland OR ABSTRACT INTRODUCTION Recrystallization is a commonly used tool in laboratories when dealing with impure solids. "An effective recrystallization is one in which 1) a high degree of purity is achieved as well as 2) a maximum recovery of sample".1 Solubility‚ the tendency of a substance to dissolve in a liquid‚ is an

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    Since recrystallization is more of a method to purify than a separation method we had to apply the bases. Normally‚ recrystallization is done by increasing the solubility of a solvent by heating it up‚ but since we did constant temperature recrystallization we use acidification as our method of recrystallization. The acidification using 6M HCl changed the solubility of our compounds by protonating them. The

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    Benzoic Acid

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    EXPERIMENT 2: Recrystallization and Melting Point Recrystallization (or Crystallization) is a technique used to purify solids. This procedure relies on the fact that solubility increases as temperature increases (you can dissolve more sugar in hot water than in cold water). As a hot‚ saturated solution cools‚ it becomes supersaturated and the solute precipitates (crystallizes) out. In a recrystallization procedure‚ an impure (crude) solid is dissolved in a hot solvent. As this solution is cooled

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    ATQ 2

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    through. A piece of wire is placed to avoid build-up of pressure‚ and easily pour the solution without spilling. 2.) Enumerate 2 techniques that can help prevent premature recrystallization. Explain each item. What can be the consequence if premature recrystallization was not avoided to occur? Premature recrystallization happens when the solution cools down while it is being poured. To avoid this‚ the funnel may be kept warm using steam‚ and immediately drying with a towel or flame. To make

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    cold rolling brass

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    Experiment 5 - Cold Work‚ Recovery‚ Recrystallization and Grain Growth Objective To study the effects of cold working on the microstructure and mechanical properties of 70/30 Cartridge Brass. Background A small percentage of the energy expended in plastically deforming a material remains stored in the metal as an increase in internal energy. Changes are produced in both its physical and mechanical properties. Principally‚ there is a marked increase in hardness and electrical resistivity with

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    Metamorphic Rock

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    rocks. But they are not necessarily the result of the metamorphism process. Recrystallization and metamorphism: During the metamorphism process‚ the change in the rocks particle size is called the recrystallization. As an example‚ through the process of recrystallization‚ the limestone crystals change into marbles which are made of larger crystals. The pressure and high temperature‚ both contribute to the recrystallization process. The high temperatures allow the ions and atoms in the solid crystals

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