Background: Benzocaine | | C9H11NO2 | Reaction scheme for Fischer Esterification of p-aminobenzoic acid: Synthesis of Benzocaine.3 In 1890‚ a chemist named Ritsert‚ was the first to synthesis benzocaine and introduced it in the market in 1902. Benzocaine is a pain reliever and has many active over-the-counter ingredients. It is also used as a lubricant and topical anesthetic on intratracheal catheters and pharyngeal and nasal airways to obtund the pharynegeal and tracheal reflexesl.2 Sodium
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Objective: To study the affect of pH on a food preservative. Chemical Equation: C6H5COONa + HCL ------ C6H5COOH + NaCl Procedure: This experiment was started with a clear solution of sodium benzoate and HCl was added to it‚ ultimately producing benzoic acid. First‚ .3395 g of sodium benzoate was weighed‚ then it was dissolved in water‚ causing it to disassociate into ions. Next‚ 3M of HCl were added drop wise to the solution until it reached a pH of 2‚ thus introducing the hydronium ion
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Introduction The purpose of this lab was to produce benzoic acid by mixing sodium benzoate with hydrochloric acid. The Hydrochloric acid used in the experiment was a stock solution made by mixing HCl Acid and deionized water. HCl acid‚ historically called‚ muriatic acid or spirits of salt‚ hydrochloric acid is produced from sulfuric acid and common salt‚ NaCl (Princeton.edu). Since the early 1900 ’s‚ sodium benzoate has been used as a food preservative (SolarNavigator). It is utilized in a wide range
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Lucas’ test‚ Anilide formation‚ ester formation‚ hydrolysis‚ hydroxamic acid‚ Benedict’s test‚ Chromic test‚ 2‚4-Dinitrophenylhydrazine‚ Fehling’s solution‚ Schiff’s reagent‚ Tollen’s test‚ bromine water‚ cerric ammonium nitrate‚ ferric chloride‚ esterification‚ sodium bicarbonate‚ silver nitrate‚ Barfoed’s test‚ Borax Test‚ Bial test‚ Osazones‚ Seliwanoff’s test‚ Molisch test‚ Beilstein test‚ hydroxamic test‚ sodium hydroxide hydrolysis‚ complex copper formation‚ ninhydrin test‚ nitrous acid‚ alkaline
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PVC Handbook Charles E. Wilkes‚ Charles A. Daniels‚ James W. Summers ISBN 3-446-22714-8 Vorwort Weitere Informationen oder Bestellungen unter http://www.hanser.de/3-446-22714-8 sowie im Buchhandel Preface In this single handbook the editors aim to give a diverse audience of readers a complete account of all aspects of PVC – from monomer manufacture to polymerization; the gamut of such additives as stabilizers‚ lubricants‚ plasticizers‚ impact modifiers‚ fillers and reinforcing agents;
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PCP‚ is a hallucinogenic which is normally used as an veterinary anesthetic. PCP is similar to another hallucinogenic drug‚ Ketamine‚ based on their structure and effects on the person. PCP causes a dissociative state by inhibiting NMDA receptors (N-methyl-D-aspartate). [1‚2‚3]PCP is widely abused and is seen often on the streets. The drug has various ways to be administered where it can be smoked‚ administered intravenously‚ snorted‚ or taken orally. When taken heavily‚ it can become tolerated by the
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the study‚ the subjects were given AFCs (capsule A)‚ sodium benzoate (capsule B)‚ and a placebo. All participants received a random sequence of when they would consume the capsules or placebo. Capsule A included 62.4 milligrams of AFCs. There was 15.6 milligrams of sunset yellow‚ 15.6 milligrams of carmoisine‚ 15.6 milligrams of tatrazine‚ and 15.6 milligrams of ponceau 4R in Capsule A. Capsule B included 45 milligrams of sodium benzoate‚ and Capsule C included 45 milligrams of lactose‚ which served
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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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Cola Explosion When the Mentos come into contact with the Diet Coke‚ a reaction causes the rapid formation of foam. it is concluded that the potassium benzoate‚ aspartame‚ and CO2 gas contained in the Diet Coke‚ in combination with the gelatin and gum arabic ingredients of the Mentos‚ all contribute to the formation of the foam. The structure of the Mentos is the most significant cause of the eruption due to nucleation.MythBusters reported that when fruit-flavored Mentos with a smooth waxy coating
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Biodiesel: Technology & Business Opportunities – An Insight S Biswas‚ N Kaushik & G Srikanth Technology Information‚ Forecasting and Assessment Council (TIFAC) Department of Science & Technology‚ New Delhi – 110 016 Tel: +91-11 -2686 3816‚ Fax: 2696 1158‚ e-mail : biswas@nic.in The concept of bio fuel dates back to 1885 when Dr. Rudolf Diesel built the first diesel engine with the full intention of running it on vegetative source. In 1912 he observed‚ " … the use of vegetable oils for engine fuels
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