! Isolation of the Components of BC Powder Introduction Aspirin‚ Caffeine and Salicylamide were extracted from an over-the-counter pain reliever (BC Powder). These components were separated by manipulating their solubilities by adjusting the acidity and basicity of the solution. By doing this‚ the three components were forced into conjugate acid (or base) forms‚ causing selective solubility in either an aqueous or organic solvent. These layers were then separated by use of a separation funnel
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Materials Science-Part II • Instructor: Dr. Lou X. W. (David) • Textbook: Materials Science and Engineering: An Introduction‚ by William D. Callister‚ 7th Edition • Office: N1.2-B1-09 • Email: xwlou@ntu.edu.sg • www.ntu.edu.sg/home/xwlou/ • Lecture: LT12‚ Thursdays 10:30 am – 12:30 pm • Tutorials: B12‚ TR18‚ Mondays 9:30 – 10:30 am • • B11‚ TR18‚ Mondays B10‚ TR18‚ Fridays 10:30 – 11:30 am 2:30 – 3:30 pm • • • • Tutorials weeks will be announced. CA: 2 Homeworks; 30% (50x30%=15 marks) Office
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4-hydroxy-4‚4-diphenylbutn-2-one was a three week multi-step project. The steps involved protecting the ketone of ethyl acetoacetate with a ketal group‚ followed by preparation and reaction with Grignard‚ then purification by extraction and recrystallization. The yield was 78.5%‚ but there are impurities present suggested by 1H-NMR‚ IR‚ and TLC. However‚ the results do indicate the desired hydroxyketone was formed. Introduction: The purpose of this multi-step lab was to synthesize 4-hydroxy-4
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Abstract – This multi-step synthesis uses aniline as the starting reagent to synthesize five compounds employing several reactions such as acetylation‚ diazo coupling‚ nitration‚ bromination‚ and hydrolysis. The isolated products were analyzed with TLC and spectral data that determined most products were pure while some had a few impurities indicated by GC‚ LC‚ and a wide melting point range was shown for products 2 and 3. The presence of water in product 2 and 7 was indicated by the IR. Acetanilide
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Inorganica Chimica Acta 357 (2004) 3825–3835 www.elsevier.com/locate/ica Synthesis‚ crystal structures‚ and molecular hyperpolarizabilities of a new Schiff base ligand‚ and its copper(II)‚ nickel(II)‚ and cobalt(II) metal complexes Pascal G. Lacroix a b a‚* ‚ Frdric Averseng a‚ Isabelle Malfant a‚ Keitaro Nakatani e e b Laboratoire de Chimie de Coordination du CNRS‚ 205 route de Narbonne‚ 31077 Toulouse‚ France PPSM‚ Ecole Normale Suprieure de Cachan‚ URA 1906‚ Avenue du Pdt Wilson
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Monica Perez Experiment 8: Acetylsalicylic Acid Experiment 01/25/2013 CHM Lab- 2211 Sec 0016 Instructor: Jennifer Reed Introduction: Commonly used as Aspirin‚ acetylsalicylic acid is an analgesic (pain reliever)‚ which is one of the products of the esterification reaction between salicylic acid and acetic anhydride. This esterification occurs since the hydroxyl group from the salicylic acid reacts with acetic anhydride to form an ester. In this experiment‚ we will be able to recreate
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LABORATORY REPORT 4 PREPARATION OF ALUM FROM ALUMINUM METAL Huy Nguyen October 2nd‚ 2012 The objective of the laboratory is to synthesize alum (KAl(SO4)2.xH2O) from aluminum powder and to determine the proportion of water in the alum crystals. Alum is a product from the reaction between potassium hydroxide and sulfuric acid. The reaction include several steps‚ as followed: Aluminum powder reacts with potassium hydroxide to generate Al(OH)4- ions and release hydrogen. 2 Al(s) + 2 KOH(aq)
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Organic Chemistry II Laboratory (ABCT357/ABCT3757) Lab Manual 2014-2015 Lee Hang Wai‚ Alston (alston.lee@polyu.edu.hk) Dr. Lee Cheng Hao‚ Samuel (chenghao.lee@polyu.edu.hk) Organic Chemistry II Laboratory (ABCT357‚ ABCT3757) (Group one) Contact: Alston Lee (alston.lee@polyu.edu.hk) Tuesday 8:30-11:30 ‚ Laboratory: Y1315 Lab supporting staffs: YK Au / Kan Chan/Arnold Demonstrators: Dr. Samuel Lee‚ Alston Lee‚ Fu Wai Chung‚ Guo Shuai‚ Yuen On Ying‚ Sep 16 Tue Acetylation of α-D-glucopyranose (Expt
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SYNTHESIS OF 1-PHENYLAZO-2-NAPHTHOL ABSTRACT Amines are compounds composed of nitrogen atoms bearing alkyl or aromatic compounds. Amines undergo interesting reactions‚ one of which is with the reaction with nitrous acid producing an azo dye. In this study‚ the experiment focused on synthesizing an observing the physical properties of Sudan-1. Sudan-1 is of the most common dyes found in waxes‚ oils and in some food ingredients specifically curry and chilli powder. Furthermore‚ this study aimed to
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the synthesis of a compound or in the isolation of a compound from a natural source‚ acid-base extractions are used to either directly isolate a desired acidic or basic compound or to remove acidic or basic impurities. Extraction‚ along with recrystallization and distillation‚ is one of the most important separation and purification techniques in organic chemistry. The Experiment. then the drop will mix with the solution. If the solvent is the mistaken organic layer‚ then the water
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