medications. Aspirin was the first discovered NSAID. [8] Aspirin among all these usefulness‚ do has its side effect such as upset stomach‚ heartburn‚ drowsiness‚ and headache. [9] The equipment used in this experiment are‚ Conical flask‚ Acetic anhydride‚ Salicylic acid‚ Concentrated sulfuric acid‚ Water bath‚ Distilled water ‚ Cold water‚ Hot water‚ Filter paper‚ Ethanol‚ Hot plate and Dry watch glass.
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Technical grade aniline was reacted with acetic anhydride to give acetanilide a dark brown color‚ due to the presence of impurities. Crystallization of the crude product from water was combined with decolorization with activated carbon‚ furnished pure acetanilide as white flakes‚ melting point 112-115°C‚ yield 70.3%. Experimental: 2 grams of technical grade aniline and 15ml water were placed in a 125ml Erlenmeyer flask. Then‚ 2.5ml of acetic anhydride was added while swirling the flask. An exothermic
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and acetic anhydride; in the presence of sulfuric acid. After fully dissolving the salicylic acid with acetic anhydride‚ the solution is cooled and cold water is then added. Once the crystals form they are then filtered and left to dry out. There mass is measured and recorded then the yield is calculated. Introduction: Purpose: The aim of this experiment is to synthesize the common pain killer aspirin through an esterification reaction between Salicylic Acid and Acetic Anhydride; using sulfuric
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polyvinyl acetate. Acetic anhydride Acetic anhydride can be synthesized by condensation reaction of two molecules of acetic acid. The main process involves dehydration of acetic acid to give ketene at 700-750 °C. Ketene is thereafter reacted with acetic acid to obtain the anhydride: CH3CO2H → CH2=C=O + H2O CH3CO2H + CH2=C=O → (CH3CO)2O Acetic anhydride is an acetylating agent. As such‚ its major application is for cellulose acetate‚ a synthetic textile. Acetic anhydride is also a reagent for the
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ORGANIC CHEMISTRY LAB 2: Separation of Organic Liquid Mixtures Introduction: In this experiment‚ a mixture of two compounds‚ cyclohexane and toluene‚ was separated into fractions by the techniques of simple and fractional distillation. The individual fractions that were gathered from the distillation were analyzed using gas chromatography (GC) and used to compare the efficiencies of the two different distillation techniques. The ultimate goal of this experiment was to determine whether simple
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purity. The purpose of our experiment was to synthesize aspirin from acetyl anhydride‚ salicylic acid‚ and sulfuric acid. And then determine the relative purity of the synthesized sample. The procedure performed in our experiment involved chemically reacting salicylic acid and acetic anhydride in order to form acetyl salicylic acid. The limiting reactant in this chemical reaction was salicylic acid‚ with acetic anhydride present in excess in order to react with any water produced during the reaction
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Aspirin ABSTRACT: The purpose of this experiment was to find out how a reaction undergoes for a globally known painkiller called aspirin‚ and to become familiar with achieving successful yields. Aspirin is synthesized from salicylic acid and acetic anhydride. Those two chemicals are mixed together along with sulfuric acid to form a crude solid. Filtration is used separate the impurities from the crude aspirin. To get purified aspirin‚ the precipitate was heated until all the excess had been removed.
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para-aminophenol is completed by dissolving the para-aminonphenol hydrochloride salt in water‚ decolourising the aqua solution and crystallising the para-aminophenol by neutralizing the salt. The resulting para-aminophenol is reacted with acetic anhydride to produce paracetamol. The reactions are summarized as shown below: Process using Paranitrochlorobenzene as a starting raw material Paranitrochlorobenzene is converted to paranitrophenol by means of caustic fusion with caustic soda
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to make vitamin D and various hormones‚ such as estrogen‚ testosterone‚ and cortisol. The body can produce all the cholesterol that it is needs‚ but it also obtains cholesterol from food. Lieberman-Burchard test: The Lieberman-Burchard or acetic anhydride test is used for the determination of cholesterol. The formation of a green or green-blue color after a few minutes is positive. Lieberman-Burchard is a reagent used in a colorimetric test to detect cholesterol‚ which gives a deep green color. This
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Preparation of Fruit Flavors (Pear) Abstract. In this experiment an assigned Ester is prepared‚ particularly n-Propanol. The Preparation was done via Fischer reaction. In this reaction‚ a reflux set-up is required. The reflux set-up was used in the liquid-liquid extraction. After adding an immiscible solution to the compound containing n-Propanol‚ the mixture now will have two layer: the Organic and Aqueous layer. The organic layer is the extract needed and its % yield is computed resulting to
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