the gums for the flavor. The reaction that takes place in this experiment is a esterification. In this experiment‚ the carboxyl group of the acetic acid joins with the hydroxyl group of the isopently alcohol‚ catalyzed by the presence of sulfuric acid‚ through a dehydration reaction‚ in which water is removed. This allows for an ester bond to form in the second carbon of the isopentyl acetate (banana oil). Esterification of the acetic acid with isopentyl alcohol is the reaction‚ which prepared the
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1. FD&C Blue No. 1 – Brilliant Blue FCF‚ E133 (blue shade) Brilliant Blue FCF (Blue 1)‚ also known under commercial names‚ is a colorant for foods and other substances to induce a color change. It is denoted by E number E133 and has a color index of 42090. It has the appearance of a reddish-blue powder. It is soluble in water‚ and the solution has a maximum absorption at about 628 nanometer. ------------------------------------------------- Chemistry It is a synthetic dye produced using aromatic
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2013 Abstract The purpose of this lab was to determine whether a sufficiently pure sample of synthetic banana oil could be prepared through Fisher Esterification. During the experiment‚ the reaction mixture was purified through an extraction workup‚ and according to the instructor‚ once getting the density of the product and the actual yield; it was not required to use the distillation method. Introduction
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and lower space occupation. These industrial reactive distillation systems comprise homogeneous and heterogeneous catalysed‚ irreversible and reversible reactions‚ covering large ranges of reactions‚ notably hydrogenations‚ hydrodesulfurisation‚ esterifications and etherification. Various commercial methods for packing heterogeneous catalyst in columns are now available. The systems comprise amongst others: multiple catalyst systems‚ gas and liquid internal recycle traffic over these catalyst systems‚
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The Chemistry of Fragrances From Perfumer to Consumer 2nd Edition RSC Popular Science Titles The RSC publishes series of inexpensive texts suitable for teachers and students which give a clear‚ readable introduction to selected topics in chemistry. They should also appeal to the general chemist. For further information on all available titles contact: Sales and Customer Care Department‚ Royal Society of Chemistry‚ Thomas Graham House‚ Science Park‚ Milton Road‚ Cambridge CB4 0WF‚ UK
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Acetylsalicylic acid is the active pharmaceutical ingredient in aspirin and can be synthesized by the esterification reaction of salicylic acid and acetic anhydride in the presence of an acid catalyst. An esterification reaction is when an acid is converted into an ester by combining with an alcohol and removing a water molecule. When heating the salicylic acid mixture in the warm water bath‚ the mixture should be removed from the bath within 8 minutes‚ to reduce the chance of the acetylsalicylic
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Pickling is the process of preserving food by anaerobic fermentation in brine or vinegar. The resulting food is called a pickle. This procedure gives the food a salty or sour taste. In South Asia‚ edible oils are used as the pickling medium with vinegar.[1] Another distinguishing characteristic is a pH less than 4.6‚[2] which is sufficient to kill most bacteria. Pickling can preserve perishable foods for months. Antimicrobial herbs and spices‚ such as mustard seed‚ garlic‚ cinnamon or cloves‚ are
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CHEMISTRY OF NATURAL PRODUCTS Terpenoids Sameena Bano Department of Chemistry Faculty of Science Jamia Hamdard New Delhi-110062 (24.09.2007) CONTENTS Introduction Classification of Terpenoids Isolation of mono and sesquiterpenoids General properties of Terpenoids General methods of structure elucidation Terpenoids Citral Menthol Camphor Eugenol Keywords Terpenes‚ isoprene‚ citral‚ menthol‚ camphor and eugenol 1 Introduction There are many different classes of naturally occurring
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Hydrocarbon – Alcohols • Ethanol - 92.3% by weight of ethanol‚ 94.9% by volume. - 70 % which is used as local antiinfective • Diluted Alcohol - 48.4 % to 49.5% used as solvent • Brandy - distillation from wine • Whisky - fermented malted grain • Rum fermented molasses Product of Reductive Metabolism • Mannitol • Ash Manna • Fraxinus ornus – Oleaceae • Osmotic diuretic • Laxative Product of Reductive Metabolism • Sorbitol- Mountain ash • Sorbus aucuparia Rosaceae • Half as sweet as
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aMicroscale Synthesis of Isopentyl Acetate (Banana Oil) Objective: Carried out the microscale synthesis of isopentyl acetate by direct esterification of acetic acid and isopentyl alcohol. This was an acid catalyzed Fischer esterification. Both extraction and distillation were employed to obtain a pure product. IR spectroscopy and gas chromatography were used to determine purity of the final product. Reagents: * Compound: | * MW (g/mol): | * MP (°C): | * BP (°C): | * Density (g/mL):
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