Dissolve the solid in exactly 4 mL tert-butyl methyl ether of. Add exactly 2 mL of water‚ cap the tube and shake. Let the mixture stand until two layers are formed. Remove the aqueous layer. Wash the organic layer two more times with exactly 2 mL of water (each time). After the final wash‚ dry the
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Synthesis of Triphenyl Phosphate and Benzyl Benzoate with Phase-Transfer Catalyst in Heterogeneous Liquid-Liquid Reaction System S a t o r u Asai‚’ Hidemi Nakamura‚ Mitsunori Tanabe‚ and Kenji Sakamoto Department of Chemical Engineering‚ University of Osaka Prefecture‚ Sakai‚ Osaka 593‚Japan The synthetic reactions of triphenyl phosphate from diphenylphosphoryl chloride and sodium phenoxide and of benzyl benzoate from benzyl chloride and sodium benzoate with phase-transfer catalyst were studied
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Xanthoproteic Test Conc. HNO3‚ conc. NaOH For W‚F‚Y (aromatic except for H) Blue to blue-violet Oxidative decarboxylation color & deamination followed by (proline:hydroxypr condensation oline gives a yellow color) Yellow sol’n/ppt. Nitration via SEAr with conc. HNO3‚ orange with excess NaOH Millon’s rgt.(Hg2+ & Hg22+nitrates& nitriles/Hg(NO3)2 in conc. HNO3‚ w/ trace of HNO2/HgSO4‚H2SO4 ‚NaNO2) Hopkins-Cole Test Glyoxylic acid (Mg powder‚ oxalic acid‚ HOAc)‚ conc. H2SO4
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THE VICTORIA SCHOOL SANTIAGO JACOME LAB REPORT PTC BIOLOGY SL AIM: The aim of this lab is to analyze the genotype differences of classmates that are able to taste PTC‚ Thiourea and Sodium benzoate and determine the phenotypes found. Testing the ability to taste PTC has been a mainstay activity in human genetics for generations of teacher and students. The ability to taste PTC is inherited. Traditionally this is presented as a case of simple Mendelian inheritance involving a dominant allele for tasting
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INVESTIGATORY PROJECT Flower bloom perfume Submitted by: Ma.anne Briones Frances Blanco
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– February 28‚ 2014 ABSTRACT The observed reaction that took place in this experiment was the de-esterification of ethyl benzoate to form benzoic acid. This experiment was used to determine the rate constant k of the synthesis of benzoic acid at different temperatures and ethanol concentrations. The reaction was carried out in a batch reactor‚ where ethyl benzoate was added to a mixture of water‚ ethanol‚ and sodium hydroxide. The agitation speed of the batch reactor was kept set at 250 rpm
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Vol. 21 Summer 2005 Newborn Screening in the 21st Century From the Editors and Authors: Since our last Update on Newborn Screening in 1998‚ there has been significant expansion of newborn screening programs in various regions of the country‚ mostly to include metabolic disorders identifiable by tandem mass spectrometry. States in our region are just now starting to expand their programs. The Summer 2005 Genetic Drift provides an update on newborn dried blood spot screening (NBS). Specifically
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Typical soft drinks usually contain carbonated water‚ caffeine‚ sodium benzoate‚ flavoring agents‚ and sweeteners as well for the purpose for enhancing flavor‚ and in the case of benzoate‚ to function as a preservative. Caffeine is one of the major components that is found in several beverages like coffee‚ energy drinks‚ tea‚ and soft drinks; just to name a few. Caffeine is known to be a powerful drug‚ which many people become dependent on; when they wake up in the morning it is typical to have a
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toluene‚ cyclohexene and naphthalene in hexene were subjected to parallel chemical testing to differentiate their intrinsic physical properties in terms of structure and behavior. The physical state and color were noted by simple physical observation. Nitration Testing was conducted for preliminary parallel testing until a positive result of yellow oil was seen. For the second and final testing‚ oxidation was done through introducing 3 drops of KMnO4 reagent and 2 drops of 10% NaOH solution to 5 drops of
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Evaluation of antidiabetic and antimicrobial activity of jasminum grandiflorum leaves INTRODUTION 1.1. The pancreas and insulin formation The pancreas is an elongated organ situated next to the first part of the small intestine. It is both an endocrine gland that produces hormones‚ such as insulin and glucagon‚ and an exocrine gland producing digestive enzymes‚ such as trypsin and chymotrypsin (Martini‚ 2004). It is located behind the stomach‚ between the spleen and the duodenum (see Figure
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