maleic acid ir spectrum

Catalytic Hydrogenation of Isomeric Cresols Over a Silica

CATALYTIC HYDROGENATION OF ISOMERIC CRESOLS 1041 The FT-IR spectra were recorded on a BRUKER IFS 113V FT-IR spectrophotometer at 2 cm' resolution in the range of 4000-200 cm-1 on KBr pellets The X-ray photoelectron spectroscopy (XPS) data were recorded on the PHI 5300 ESCA system (Perkin-Elmer) using an aluminium cathode (1486 6 eV) as the X-ray source and the system energy

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US Patent for Maleic anhydride copolymer Patent (Patent

A maleic anhydride copolymer comprising maleic anhydride units (I) conjugated diene units (II) and aliphatic monoolefin units (III) is provided This copolymer has a weight-average molecular weight of from 500 to 50000 The molar ratio of unit (I)/(unit (II)+unit (III)) ranges from 30/70 to 90/10 and the molar ratio of unit (II)/unit (III) ranges from 5/95 to 90/10

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IJMS

The IR spectra of the amidoacidified copolymer C2 shown in Figure 3 corresponded to the comparative spectrum of the model product (Figure 3 M1) from the reaction of maleic anhydride with DMAPA To determine the content of modified succinic anhydride moieties elemental analysis was employed

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Thermal analysis of a sodium salt of the maleic acid

The applied polymer material is a sodium salt of maleic acid-acrylic acid copolymer Methods of crosslinking and hardening of this polymer in molding sands are already developed [5] A certain fragment of the performed stu-dies related to the determination of the thermal stability of the investigated polymer is presented in this paper

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Removal of copper ions from aqueous solution by the

Considering the obtained kinetic data and FT-IR and UV-vis spectra of the sorbent after sorption it is possible to come to the conclusion that Cu 2+ ions enter a complex with two carboxylic groups of the maleic acid units of the sorbent in the sorption process The experimentally obtained data allow the conclusion that prepared sorbent can be

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A Matrix Isolation Spectroscopic and Quantum Chemical

3/28/2001The IR temperature studies of phase transition of 4-aminopyridinium-hydrogen maleate-maleic acid: Isotopic effect and nonlinear optical properties Vibrational Spectroscopy 2013 66 93-103 DOI: 10 1016/j vibspec 2013 02 004

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Grafting maleic anhydride and comonomers onto

Studying the FTIR spectrum it was GRAFTING MALEIC ANHYDRIDE AND COMONOMERS ON PE The FT-IRspectrum of sample grafted by MA:DMM = 2: 1 molar ratio mixture lSs0 1BM) --w T ' 1W 7 CH-1 l2 E0 ~~ Figure 4 FTIR spectrum of DMM/MA-grafted PE The FT-IR spectrum of sample grafted by fumaric acid O OI 00 8l O 0 01 4 Wl Figure 5 FTIR spectrum of FA

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Orgo Lab 223L Review Flashcards

- IR: benzoic acid has carboxylic acid group benzil has two ketone - TLC: benzil is nonpolar benzoic acid is polar so in non polar solvent benzil goes all way up but benzoic acid binds to silica gel - if polar solvent pulls benzoic acid up as well NMR: Benzoic acid has hydrogen on carboxylic acid benzil only has H on aromatic rings

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Phase Changes in Internally Mixed Maleic

Phase changes in internally mixed maleic acid/ammonium sulfate aerosols Sarah D Brooks Rebecca M Garland Matthew E Wise Anthony J Prenni Melinda Cushing Erika Hewitt and Margaret A Tolbert Department of Chemistry and Biochemistry and Cooperative Institute for Research in Environmental Sciences University of Colorado Boulder

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EXTRACTION IDENTIFICATION AND DETERMINATION OF

UV Spectrum (nm): 10g of extracted caffeine was dissolved in 100ml of 0 05M sulphuric acid in volumetric flask (which gives 0 1mg/ml) 2 5ml of this solution is transferred into 25ml volumetric flask and diluted to the mark with 0 05M sulphuric acid UV spectrum was run for this solution and a maximum absorption of 275nm was

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Difference between Maleic and Fumaric Acid?

11/25/2013Water solubility of fumaric acid is 4 9 g/L at 20 C Water solubility of maleic acid is 788 g/L at 20 C i e maleic acid is much more soluble than fumaric acid Again this can be can be explained by the intramolecular hydrogen bonding that takes place in maleic acid which is not possible in fumaric acid for geometric reasons

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Synthesis of Maleic Anhydride Grafted Polypropylene

unreacted maleic hydride removed the new absorption peaks indicate that the maleic anhydride has been grafted onto the PPB molecular chain 3 2 1H-NMR analysis In order to investigate the location of the grafting reaction the PPB before and after grafting were both characterized by 1H-NMR shown in Figure 2 In the spectrum of

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Phase changes in internally mixed maleic acid/ammonium

8/15/2003To probe the identity of this peak observed in the maleic acid aerosol sample we measured the infrared spectrum of a maleic acid thin film The film was prepared by dissolving maleic acid in acetone and pipetting 2–3 drops onto a NaCl window After evaporation of the solvent the spectrum in Figure 3 Spectrum I was observed

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Most recent papers with the keyword Maleic acid

Deep eutectic solvents (DES) as a novel class of ionic liquid analogues have been widely used in various fields Herein a multifunctional biomass-based DES composed of choline chloride (ChCl) and glucose (GLU) was synthesized and used for the modification of vanadium phosphorus oxide (VPO) catalyst which is the sole catalyst for the selective oxidation of n-butane to maleic anhydride (MA) in

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Infrared Spectroscopy of Aqueous Carboxylic Acids: Malic

6/19/2002Quantitative infrared (IR) titration of 1 80 M malic acid is presented where factor analysis (FA) was used to obtain the principal species' spectra and their abundances Three malic species and three water species were obtained The distribution of the species as a function of pH was made from which their pKa values were determined The experimental points of the distribution curves correspond

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SYNTHESIS AND CHARACTERIZATION OF UNSATURATED

heating propylene glycol phthalic anhydride maleic anhydride and fumaric acid in molar ratio 1 1 :0 5:0 25:0 25 at 205C to acid value 60 and vacuumed to 5 torr for 2 hrs to acid value 18 Dicyclopentadiene maleic anhydride and propylene glycol were heated at

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Expt #4

An IR spectrum and mp will also be obtained (lit mp 126-127) Procedure Reaction: In a 25-mL round-bottom flask put 0 010 mole of maleic anhydride and 0 010 mole of alpha-Phellandrene Add 5 mL of diethyl ether attach a reflux condenser and heat on a hot water wath for 60 min

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NLO and NBO Analysis of Sarcosine

Maleic acid ((Z)-Butenedionic acid) is an organic compound (sometimes named a dicarboxylic acid) a molecule with two carboxyl groups Maleic acid is the cis isomer of butenedioic acid whereas fumaric acid is the trans isomer of it It is mainly used as a precursor to fumaric acid but unlike its parent maleic anhydride maleic acid enjoys

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Maleic acid potassium salt

Go To: Top IR Spectrum References Data from NIST Standard Reference Database 69: NIST Chemistry WebBook The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment

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D L

Transmission Infrared (IR) Spectrum View the Full Spectrum for FREE! View the Full Spectrum for FREE! The full spectrum can only be viewed using a FREE account SpectraBase Spectrum ID: SUCCINIC ACID HYDROXY- MALIC ACID DL- MALIC ACID: Technique: KBr WAFER Bio-Rad Laboratories Inc

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Cis

Recrystallize the remainder from l M HCI(?100 mL preparation this solution by yourself) Dry both crude and purified solids and record the melting points of both Attempt to evaluate the water solubility in comparison to the maleic acid starting material Record the IR spectrum of the product and compare it to that of maleic acid

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Orgo Lab 223L Review Flashcards

- IR: benzoic acid has carboxylic acid group benzil has two ketone - TLC: benzil is nonpolar benzoic acid is polar so in non polar solvent benzil goes all way up but benzoic acid binds to silica gel - if polar solvent pulls benzoic acid up as well NMR: Benzoic acid has hydrogen on carboxylic acid benzil only has H on aromatic rings

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