aspirin. The experiment has been carried out on a small laboratory scale. The experiment starts by combining such chemicals such as salicylic acid and acetic anhydride. The synthesis of aspirin is classified as an esterification reaction. This is a substitution reaction where the alcohol group from salicylic acid reacts with ascetic anhydride to form an ester‚ (acetylsalicylic acid) which is commonly known as Aspirin. The report progresses further giving details to the procedure carried out and the
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Acetylsalicylic Acid (Aspirin) Synthesis Telow‚ AJV Sumicad‚ CJ‚ Tavanlar‚ EMMT‚ Chem 40.1‚ Institute of Chemistry‚ University of the Philippines Los Baños I. Introduction Organic synthesis is the process where a desired organic compound is constructed or prepared from commercially available materials. The objective of organic synthesis is to design the simplest synthetic routes to a molecule. Aspirin‚ also known as acetylsalicylic acid is as salicylate drug often used as analgesic
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at most contain approximately 300 mg of Dicamba. With the average human being weighing 80 kg and the U.S. EPA setting the oral reference dose (RfD) for Dicamba at 0.5 mg/kg/day‚ that limit equates to 40 mg per day. According to a NOAA study‚ the average American eats .00025 kg per day of fish (North Oceanic and Atmosphere Administration [NOAA]‚ 2012). .00025 kg divided by 2 kg‚ multiplied by 300 mg of Dicamba is equal to .0375 mg of Dicamba (well under the 40 mg per day). From the rat laboratory
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synthesis of aspirin‚ acquire the skills of recrystallisation using normal filtration and reinforce the technique of the melting point determination. The method used to synthesize aspirin was esterification by reacting salicylic acid with acetic anhydride with the presence of dehydrating agent‚ conc. sulphuric acid‚ to speed up the reaction. Having obtained the crude aspirin which was still impure‚ recrystallisation was conducted to remove the impurities. The aspirin harvested at the end of the experiment
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Sypnopsis In this experiment‚ acetylsalicylic acid was synthesized from the acidification of salicylic acid and acetic anhydride. The objective was to convert a specific amount of salicylic acid into the same amount of aspirin that was high in purity. Furthermore‚ the other objectives were to enable students to conduct the synthesis of aspirin‚ reinforce skills or recrystallisation and the technique of melting point determination. The amount of each compound should be the same because there is
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Aspirin can be dosed at 650 to 1000 mg for adults orally every 4 hours as needed; maximum 4 g/day. Ibuprofen can be doses at 200 to 800 mg for adults orally every 6 to 8 hours as needed; maximum 3.2 g/day and 5 to 10 mg/kg for pediatrics orally every 6 to 8 hours as needed; maximum‚ lesser of 40 mg/kg/day or 2.4
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To be published in the Gazette of India‚ Extraordinary‚ Part II‚ Section 3‚ Sub-section(ii) dated 15th May 2013 Ministry of Chemicals and Fertilizers (Department of Pharmaceuticals) New Delhi Dated 15th ___May 2013 25 Vaisakha Saka 1935 ORDER S.O. 1221(E).– In exercise of the powers conferred by section 3 of the Essential Commodities Act‚ 1955‚ (10 of 1955)‚ and supersession of the Drug (Prices Control) Order‚ 1995‚ except as respect to things done or omitted to be done before such supersession‚
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Safety Precautions for Synthesis of Acetic Anhydride Acetic Anhydride Acetic anhydride is an irritant and also flammable‚ therefore gloves and goggles should be worn at all times during the experiment. It is reactive to water‚ so in the case of fire‚ alcohol foam or carbon dioxide is preferred to use as an extinguisher. This chemical has harmful fumes and use of a fume hood is strongly recommended. Sulphuric and Salicylic Acid These acids may irritate the skin in high concentrations. Take
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Department of Chemical Engineering‚ IIT Delhi POLYIMIDE SUBMITTED TO: Dr. Sreedevi Upadhyayula SUBMITTED BY: Gurdeep Singh Somal 2010CH10078 Gurvineet Singh Dhillon 2010CH10079 Gaurav Singh Sinsinwar 2010Ch10077 Polyimide is a polymer of imide monomers. The structure of imide is as shown. Polyimides have been in mass production since 1955. Typical monomers include pyromellitic dianhydride and 4‚4 ’-oxydianiline. Polyimides are a very interesting group of incredibly strong and astoundingly
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Importance of colloidal dispersion in pharmacy Pharmaceutical Applications of colloids: Colloids are extensively used for modifying the properties of pharmaceutical agents. The most common property that is affected is the solubility of a drug .However‚ colloidal forms of many drugs exhibits substantially different properties when compared with traditional forms of these drugs. Certain medicinals have been found to possess unusual or increased therapeutic properties when formulated in the colloidal
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