The labeled bands demonstrate orientation of the clay see text. Ir spectra of irradiated cometary ice analogues containing. Ethylene glycol eg and other glycolss1,2propylene glycol 1,2pg, 1,3propylene glycol 1,3pg, and 2,3butylene glycol 2,3bgsare widely used as components of antifreeze liquids and of other. Midinfrared spectroscopic investigation of the perfect. Synthesis and characterization of polyethylene glycol mediated. These results shown that the retention times of ethylene glycol were 3. Ir characterization and radiation chemistry of glycolaldehyde and ethylene glycol ices reggie l.
Spectrum offers ethylene glycol useful in a huge variety of lab applications and available in many forms and grades. Regions of the mass spectrum are shown in greater detail in figure 4. State of irremovable water in solid polymer films examined. Pdf vibrational spectra and conformational composition. Our experimental techniques have been described in previous papers.
The infrared and raman spectra of liquid doch 2 2 od and hocd 2 2 oh were recorded and interpreted. The ftir spectra of following polymers were collected. Infrared spectra were collected on mixtures of ethylene glycol eg and polyethylene glycol 600 peg600 as a function of. Investigation of water diffusion in lowdensity polyethylene by attenuated total reflectance fourier transform infrared spectroscopy and twodimensional correlation analysis. Ethylene carbonate, also known as ethylene glycol carbonate, is an organic compound used as a polar solvent and as a high permittivity component of electrolytes in lithium batteries.
Raman and infrared spectra of ethylene glycol springerlink. The spectra of acetylene, ethylene and ethane have been investigated with gratings in the region between 2 and 15 each gas shows a more or less characteristic type of structure for its vibrationalrotational. S2 on the basis of the agreement of the excitation spectrum with. The infrared absorption spectrum of glyc01 was studied. The raman spectrum of ethylene glycol has been investigated in the liquid and solid states and also in aqueous solutions. Infrared spectra of glycerin based cough syrup and diethylene glycol. 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.
The vibrational overtone spectra of ethylene glycol diacrylate egda and ethylene glycol dimethacrylate egdma monomers and corresponding polymers were recorded in the spectral range 450015000 cm. Observation of conformational changes in ethylene glycolwater. As reported previously, the ir spectra of ethylene glycol in ar and xe matrices are unstable under ir illumination. Ethylene glycol distearate egds is extensively used in the pharmaceutical and cosmetics industries. Ethylene glycol dimethacrylate is a diester that is formed by the condensation of ethylene glycol and methacrylic acid and used primarily in free radical copolymer crosslinking reactions. The flamegard 5 uvir and flamegard 5 msir are mounted on a moving cart on wheels with 10 ft. Infrared spectra and rotational isomerism of mono, di, and tri. S1n106 ethylene glycol dimethyl ether s1n107 2ethylaminoethanol s1n108 ethylene glycol monoethyl ether s1n109 cyclohexane s1n110 cyclohexene s1n111 pyridine s1n112 2,3dihydro4hpyran. Solventfree esterification of stearic acid and ethylene.
Petersburg, fl 33711, usa b code 691, nasagoddard space flight center, greenbelt, md 20771, usa c department of physics, astronomy, and geophysics, connecticut college, new london. The infrared absorption spectra of acetylene, ethylene and. Despite this impeding effect, the disappearing bands could be assigned to hydrogen. Infrared spectra were collected on mixtures of ethylene glycol eg and polyethylene glycol 600 peg600 as a function of weight fraction from pure eg to pure. The presence of an absorption band at 695 cm1 suggests that the resin contains a sorbitolbased clarifier that can interfere with the. This sweet tasting organic compound can be used as an antifreeze, a desiccant, as a. The raman spectrum and the infrared spectrum in the 6504000 cm. Infrared spectra, ab initio calculations, vibrational analysis and conformations of 5 matrix isolated isotopic modifications. Article views are the countercompliant sum of full text article downloads since november 2008 both pdf and html across all institutions and individuals. Attenuated total reflectance spectra of ethylene glycol monoethyl ethercamontmorillonite complex. Attenuated total reflectance infrared atr ir spectrum of ethylene glycol with properties. Ethylene glycol is a liquid inhalation ethylene glycol is a colorless liquid.
According to the correlations in3,4, for benzocrown ethers and their. Cook c a department of chemistry, eckerd college, 4200 54th avenue south, st. Ethylene glycol polyethylene glycol applied spectroscopy. Raman spectrum of solid glycol is that by nakamura 0939. Determination of percent ethylene in ethylenepropylene. I have the spectrum obtained by an nmr analysis of ethylene glycol. Ethylene glycol is used to manufacture antifreeze and deicing solutions for cars. Figure 1 roomtemperature absorption spectrum of 5 x 10i m by monomer pet in hfip. 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. The vibrational spectrum of ethylene glycol sciencedirect. The ir spectrum of l in this range shows two bands. Seven of the glycol ethers were ineffective as antileukemic agents, including ethylene glycol, the monopropyl, monobutyl, and monophenyl ethylene glycol ethers, diethylene glycol, and the.
Ethylene glycol is widely used to inhibit the formation of natural gas clathrates hydrates in long multiphase pipelines that convey natural gas from remote gas fields to a gas processing facility. Raman and infrared spectra of ethylene glycol indian academy of. The infrared absorption spectrum of the liquid has been. Absorption and fluorescence spectra of polyethylene.
It is used to make antifreeze and deicing solutions for cars, airplanes, airport runways, and boats. Ethylene glycol is a colorless liquid that can be in the air in vapor form. Spectroscopic and computational studies of aqueous. Vibrational spectra and conformational composition of ethylene glycol dinitrate in solid phases. The purpose of this research was to investigate the effect of relative humidity rh, drug loading and polymer molecular weight on the stability of the amorphous nifedipinepolyethylene.
Fourier transform infrared and nearinfrared spectroscopic methods. The absorption at wavelengths less than 220 nm is due to hfip z iiz 280 figure 2 absorption spectrum of 0. Attenuated total reflectance fourier transform infrared atrftir spectra of ethy lene glycolwater abbreviated as egh2o mixtures were. Top, infrared spectrum, references data from nist standard reference database 69. Ethylene glycol polyethylene glycol egpeg mixtures. The most intense absorption wavelength for both of.
Vibrational spectra and conformational composition of ethylene glycol dinitrate in solid phases article pdf available in journal of applied spectroscopy 486. Ethylene glycol may be used in the preparation of spiroborate esters by reacting with chiral 1,2aminoalcohols in the presence of. Therefore, in this paper we present measurements of midir spectra for these molecules at low tempera. Infrared spectra cm of liquid ethylene glycol monoethyl ether egme, egmecac12 mixture, and. This sweet tasting organic compound can be used as an antifreeze, a desiccant, as a protecting group for carbonyls during chemical synthesis, and as a preservative for biological specimens. Propylene glycol 1, 2propanediol is an organic compound a diol alcohol, usually a tasteless, odorless, and colorless clear oily liquid that is hygroscopic and miscible with water, acetone, and chloroform. The ftir polymer spectra are available as pictures. The absorption and fluorescence spectra of ethylene glycol and glycerol solution induced by uv light were studied respectively in the present paper. The infrared absorption spectrum of the liquid has been recorded. Cook c a department of chemistry, eckerd college, 4200 54th.
Alkoxy ethanols, di and triethylene glycol monoalkyl ethers were synthesized from the respective alcohols and the corresponding ethylene glycols 3. I would like to explain the number of peaks in this spectrum, and assign them to the proton spins present in the molecule. This region contains the most important conformationrelated bands. As a result, an assignment of the vibrational spectrum of liquid ethylene glycol is. Even in textile industries as a softener, egds is in demand. Spectroscopic and computational studies of aqueous ethylene glycol solution surfaces elizabeth l. Trace determination of glycols by hplc with uv and. Only one spectrumcompound covering the mentioned spectral range typical text information about the sample includes when available. Ethylene glycol is the major component of antifreeze preparations. The large numbers of peaks in each spectrum can be arranged into a. Ethylene glycol is odorless, but has a sweet taste. Detection of adulteration of glycerol with diethylene.