simultaneous estimation of of ellagic acid‚ chlorogenic acid‚ gallic acid and quercetin in the leaf extract of Terminalia tomentosa and its Formulation. The stationary phase used was precoated silica gel 60F254.The mobile phase used was a mixture of Butyl acetate: Formic Acid: Distilled Water 14:5:5 (v/v). The detection of spots were carried out at 254 nm. This HPTLC method was validated statistically and recovery study was performed to confirm the accuracy of the method. It can be used for routine
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Callam 1/8 CHEM – 254 – WI -2009 Problem Set #1 – IR Spectroscopy - KEY 1. Which of the indicated bonds absorbs at the higher frequency in an IR spectrum? a. O or OH C=O > C-O b. N or NH C=N > C-N c. H or H C-H sp2 > C-H sp3 Callam 2/8 CHEM – 254 – WI -2009 2. What major IR absorptions are present above 1500 cm-1 for each compound? a. b. O sp3 C-H stretch 2950 C=O - ketone 1715 cm-1 cm-1 c. O sp3 C-H stretch 2950 cm-1 sp3 C-H stretch 2950 cm-1
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A Report of Experiment 1 Purification and Identification of An Unknown Mixture Aim To separate a mixture of a neutral (ester‚ alcohol‚ ketone‚ aldehyde or ether) and an acidic compound (phenol or carboxylic acid) or a neutral and a basic compound (amine)‚ and to identify the unknown mixture by physical (M.P. or B.P.) and spectroscopic methods (NMR‚ IR and MS). Method The mixture (sample number: 27) was dissolved in 200 mL of CH2Cl2 and then extracted with 10% NaOH. The acid was removed
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International Journal of Chemical and Analytical Science ISSN: 0976-1206 Research Article www.ijcas.info Physico-Chemical Characterization of Rubber Seed Oil (Hevea Brasiliensis) - A Promising Feedstock for Biodiesel Production VN Meena Devi*1‚ P Nagendra Prasad2‚ L Arul Mary Syndia2 ‚ M Rajakohila1 ‚ and VN Ariharan2 *1Department of Physics‚ Noorul Islam Centre for Higher Education‚ Noorul Islam University‚ Kumaracoil‚ Thuckalay – 629 180‚ Tamilnadu‚ India 2Department of Biotechnology‚ Sri Paramakalyani
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This is a professional and in-depth study on the current state of the Unsaturated polyester resin (UPR) industry in Global and China. The report provides a basic overview of the industry including definitions‚ applications and industry chain structure. Global market analysis and Chinese domestic market analysis are provided with a focus on history‚ developments‚ trends and competitive landscape of the market. A comparison between the international and Chinese situation is also offered. The report
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insolubility in water‚ and are soluble in ethers‚ alcohols‚ and other fat solvents (Hawk‚ 1954). Lipids are classified into three classifications‚ simple‚ compound or conjugated‚ and derived lipids. Simple lipids are esters of fatty acids with various alcohols. Compound or conjugated lipids are esters of fatty acids containing groups in addition to an alcohol and a fatty acid. Derived lipids are those derived from simple/compound lipids through hydrolysis (Harper et al.‚ 1977). Christie (2010) defined lipids
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Chapter 5: Solutions‚ Colloids‚ and Membranes Chapter Summary Mixtures and Solutions * A mixture maintains its identity regardless of the proportions of its components. * A mixture can be separated into its pure components through physical separation techniques. * The components are distributed uniformly throughout a homogenous mixture. * The components are not distributed uniformly throughout a heterogeneous mixture. * A solution is composed of a solvent and one or more solutes
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Discussion: In this experiment a ketone‚ 9-fluorenone is reduced to and alcohol. The are two possible ways by which this reduction can occur. One is by a catalytic hydrogenation‚ this uses a catalyst such as palladium or nickel‚ hydrogen gas‚ and heat/pressure. This can reduced an alkane to alkene. This catalytic process is preferred in industrial practices because the cost is low in the long run and more importantly there is little to no waste expense. However‚ hydrogen gas is dangerous due to
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tails that binds together which leaves the polar heads opening to the outside making the lipids insoluble in water. Lipids normally have different properties and environments which they prefer like saponifiable lipids which can be generalized as ester containing compounds that can be hydrolyzed by using a base as a medium then gives off soap(fatty
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Rectangular Microstrip 6X6 Patch Array Antenna Performance Evaluation based on Permittivity of the Substrate Materials 1 P.Sreyash‚ 1A.Snehitha‚ 1V.Satya Sainadh‚ 1P.L.Madhuri‚ 1Saroj Gautam‚ 2 Mr.B.T.P.Madhav‚ 2Mr.Pranob Kumar Charles‚ 3Dr.Habibullah Khan Department of ECE‚ K L University‚ AP‚ India. : sreyash306@yahoo.com‚ Snehitharao@yahoo.com 1 Project Students‚ 2Asst. Professor‚ 3Assoc. Professor‚ 4Head of the Department Abstract: In the recent years‚ the development in communication systems
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