anilides‚ such as acetanilide from aniline and acetic anhydride. Acetic anhydride is a so called intermediate chemical within organic synthesis‚ which means a substance intended to create another substance. Acetic anhydride is produced by dehydration of acetic and is used primarily for acetylating of amines‚ alcohols and thiols within both research and industry. Acetynalide is a product of aniline and acetic anhydride reaction. In the result of this to substances we
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In experiment 5‚ distillation method was used to divide hexane and toluene from a mixture (50:50) of hexane and toluene. Hexane was separated from toluene and was observed from the gas chromatography‚ it showed that hexane increased from 0.0.873 to 0.886 moles. Once the mixture of toluene and hexane hit 70 degrees in the experiment‚ the distillate was used for the gas chromatography. Hexane was higher in the distillate stage. The first drop of condensation appeared at 79°C. The volume of the distillate
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Aspirin Ling Tecson Gamido‚ Mitchiko Mariel M. Mizukami Abstract Acetylsalicylic acid‚ or also known as aspirin is known to be a drug that relives people of pain and is commonly used even today. It is synthesized from salicylic acid and ethanoic anhydride‚ both of small quantities. Phosphoric acid was used as a catalyst in the synthesis to speed up the process. Esterification is involved and the final product is aspirin with the presence of acetic acid as the byproduct. In order to create the powder
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ºC) and toluene (bp 110.6 ºC). Analysis via gas chromatography allowed us to determine the relative percentage of hexane and toluene at fractions near the beginning and end of our distillations. Relative percentages have been recorded in the table below‚ and our calculations are shown on page 5. Simple Distillation Retention time (s) Fractional Distillation Retention time (s) Cyclohexane Retention time (s) Toluene Retention time (s) Cyclohexane Retention time (s) Toluene Retention
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salicylic acid to acetic anhydride‚ the starting materials. Instead of using acetic acid‚ acetic anhydride was used as solvent since the anhydride reacting with water to form acetic acid tends to drive the reaction to the right. It results from the elimination of a molecule of water from two molecules of acetic acid (see Fig. 11.2). Figure 11.3 below shows the balanced chemical reaction of the synthesis of acetylsalicylic acid. Figure 11.2. Structure of Acetic Anhydride
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aspirin (acetylsalicylic acid) by reacting salicylic acid and acetic anhydride. INTRODUCTION This purpose of this lab was to prepare aspirin using its basic components: salicylic acid and acetic anhydride. Salicylic acid and acetic anhydride‚ along with an acid catalyst‚ react to form acetylsalicylic acid (aspirin) and acetic acid. In this reaction‚ the hydroxyl group on the benzene ring in salicylic acid reacts with acetic anhydride to form an ester functional group. The acetylsalicylic acid crystallizes
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Melting Point and Boiling Point of Organic Compounds Bongo‚ Sayre‚ J1 1Student‚ Organic Chemistry 1 Laboratory / B11‚ School of Chemical Engineering‚ Chemistry and Biotechnology‚ Mapúa Institute of Technology ABSTRACT The melting point of a substance is the temperature at which the material changes from a solid to a liquid state while the boiling point is the temperature at which it changes from liquid to solid. In this experiment‚ the main objectives were to determine the effects of the following
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The "smoke" is actually small droplets of hydrochloric acid formed by hydrolysis. http://www.chemguide.co.uk/organicprops/amides/background.html Hydrolysis Acetic anhydride dissolves in water to approximately 2.6% by weight.[10] Aqueous solutions have limited stability because‚ like most acid anhydrides‚ acetic anhydride hydrolyses to give acetic acid:[11] (CH3CO)2O + H2O → 2 CH3CO2H Aminolysis is any chemical reaction in which a molecule is split into two parts by reacting with
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2013 VI. RESULTS AND DISCUSSION Aspirin is prepared by the esterification of salicylic acid with acetic anhydride under acidic conditions. The phenol group in salicylic acid is replaced by a carboxyl group through electrophilic substitution. The mechanism for the reaction can be summarized as follows: Figure 11.4. Mechanism for the reaction of salicylic acid and acetic anhydride to form acetylsalicylic acid (aspirin) In this experiment‚ 85% phosphoric acid (H3PO4)‚ a strong acid‚ is
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Manila 1008 Date Submitted: September 13‚ 2012 ------------------------------------------------- Abstract Carboxylic acid derivatives namely‚ acyl halides‚ acid anhydrides‚ esters and amides were classified through different reactivity tests. The samples used were acetyl chloride for acyl halide group‚ acetic anhydride for acid anhydride group‚ ethyl acetate for ester group‚ acetamide and benzamide for amide group. These derivatives were identified through the mechanism of hydrolysis‚ alcoholysis
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