Results 171 to 180 of about 14,048 (200)

Microwave spectrum of 1,2-propanediol

Journal of Molecular Spectroscopy, 2009
Abstract The microwave spectrum of the sugar alcohol 1,2-propanediol (CH3CHOHCH2OH) has been measured over the frequency range 6.5–25.0 GHz with several pulsed-beam Fourier-transform microwave spectrometers. Seven conformers of 1,2-propanediol have been assigned and ab initio electronic structure calculations of the 10 lowest energy forms have been ...
F.J. Lovas, D.F. Plusquellic, Brooks H. Pate, Justin L. Neill, Matthew T. Muckle, Anthony J. Remijan   +5 more
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3-Bromo-1,2-propanediol

2001
[4704-77-2] C3H7BrO2 (MW 154.99) InChI = 1S/C3H7BrO2/c4-1-3(6)2-5/h3,5-6H,1-2H2 InChIKey = SIBFQOUHOCRXDL-UHFFFAOYSA-N (carbonyl protecting group which can be cleaved under neutral conditions2) Physical Data: bp 92–94 °C/1.5 mmHg; d 1.769 g cm−3.
Michael A. Walters, Hélène R. Arcand
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The metabolism of 1,2-propanediol

Biochimica et Biophysica Acta, 1961
Abstract 1. 1. Lactaldehyde has been identified as the product of the oxidation of dl -1.2-propanediol by a rabbit-liver alcohol dehydrogenase preparation. 2. 2. The K s values for (a) oxidation of ethanol, l -1,2-propanediol, and d -1,2-propanediol are respectively 0.63, 3.6, and 33.3 μmoles/ml; and for (b) reduction of acetaldehyde,
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1,2‐propanediol–cellulose–acrylamide graft copolymers

Journal of Applied Polymer Science, 2004
Abstract1,2‐Propanediol–cellulose–acrylamide graft copolymers (PCACs) were developed for enhanced oil recovery. They were prepared with acrylamide and 1,2‐propanediol (PDO)–cellulose, which was formed through the addition of glycols to cellulose by the Shotten–Baumann reaction between 3‐chloro‐1,2‐propanediol and cellulose.
Yasuhiko Onishi, George B. Butler, Thieo E. Hogen‐Esch   +2 more
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Toxicology, metabolism, and biochemistry of 1,2-propanediol

Toxicology and Applied Pharmacology, 1972
Abstract The toxicity of 1,2-propanediol is reviewed, and a table of the LD50 values for the rat, rabbit, mouse, guinea pig, and dog is presented. Metabolic and chronic studies demonstrate that 1,2-propanediol can be used as a substitute for carbohydrate in the diet of rats and young chicks. The glycol is primarily oxidized to lactate or pyruvate.
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Interactions between 1,2‐Propanediol (Propylene Glycol) and Hexobarbital

Acta Pharmacologica et Toxicologica, 1979
AbstractThe interaction between 1,2‐propanediol and hexobarbital was studied with an anaesthesia threshold method, where hexobarbital is infused intravenously. The dose needed to obtain a burst suppression of one second or more is determined and given as per cent of a pre‐experimental value obtained in the same rat.
A, Osterlind, A, Akesson, G, Wahlström
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Excess molar volumes of (water + 1,2-propanediol), (methanol + 1,2-propanediol), and (water + methanol + 1,2-propanediol) at 283.15 K, 298.15 K, and 303.15 K

The Journal of Chemical Thermodynamics, 1990
Abstract The excess molar volumes VmE of (water + 1,2-propanediol), (methanol + 1,2-propanediol), and (water + methanol + 1,2-propanediol) have been measured at 283.15 K, 293.15 K, and 303.15 K by using a vibrating-tube densimeter. The values of VmE are all negative over the entire range of mole fractions.
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Catalytic dehydration of 1,2-propanediol into propanal

Applied Catalysis A: General, 2009
Abstract Vapor-phase catalytic dehydration of 1,2-propanediol was investigated over several catalysts, such as acidic oxides and supported heteropoly acids. These acids catalyze the dehydration of 1,2-propanediol to produce propanal. In particular, silica-supported silicotungstic acid showed the highest catalytic activity in the formation of propanal.
Keitaro Mori, Yasuhiro Yamada, Satoshi Sato   +2 more
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1,2-Propanediol. Comprehensive experimental and theoretical study

The Journal of Chemical Thermodynamics, 2009
Abstract The standard ( p ∘ = 0.1 MPa ) molar enthalpy of formation at the temperature 298.15 K of the liquid 1,2-propanediol was measured using combustion calorimetry. Molar enthalpies of vaporization of isomeric 1,2-propanediols were obtained from the temperature dependence of the vapor pressure measured by the transpiration ...
Sergey P. Verevkin, Vladimir N. Emel’yanenko, Gernot Nell   +2 more
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Gas chromatographic determination of 1,2-propanediol dinitrate in blood

Journal of Chromatography A, 1982
A method is described for determination of 1,2-propanediol dinitrate in blood at concentrations ranging from 10 ng/ml up to 25,000 ng/ml. It used double ether extraction with manual shaking in order to complete sample preparation within 5 min. Samples are analyzed via gas chromatography-electron-capture detection using a column of 3% base deactivated ...
S D, Erk, C H, Jarboe, P E, Newton, C, Pfledderer   +3 more
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