Results 191 to 200 of about 10,122 (231)
Synthesis of 1-Aminocyclopropyl-Pentanoic and -Heptanoic Acid Derivatives
Letters in Organic Chemistry, 2008 Martina Gensini +2 more
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Adsorption of Heptanol, Heptanoic Acid, and Heptanoate Anions at Water–Air Interfaces
Journal of Colloid and Interface Science, 1996Abstract The surface tensions of heptanoic acid and n -heptanol aqueous solutions were measured at 20°C at different pH. The obtained results indicate that preferably the nondissociated form of acid is adsorbed at the water–air interface. Adsorption of heptanoate anions occurs at much higher concentrations, and they are adsorbed less closely.
Jacek Gliñski +2 more
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Davydov splitting in 7-(2-anthryl)-1-heptanoic acid Langmuir-Blodgett films
Journal of the American Chemical Society, 1987 William S. Durfee +3 more
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Complexation in the heptanoic acid-heptylamine system
Colloid & Polymer Science, 2000The complexation between heptylamine and heptanoic acid has been elucidated at 298.15 K using spectroscopic methods and also by measuring macroscopic quantities such as viscosity, conductivity and surface tension. Fourier transform IR and 13C NMR measurements point towards the existence of a compound consisting of one amine molecule and one acid ...
S. Karlsson, S. Backlund, R. Friman
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Preparation of 3(S)-ethyl-heptanoic acid from (S)-limonene A chiron approach
Tetrahedron: Asymmetry, 1995 Charles K.‐F. Chiu
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n‐Heptanoic acid by the caustic oxidation of 2‐octanol
Journal of the American Oil Chemists' Society, 1988Abstractn‐Heptanoic acid (97% pure) was prepared in 86% selectivity by the reaction of 2‐octanol with molten 50:50 NaOH‐KOH at 320 C using a meshing blade agitator and product heptanoic acid as an initiator.
N. E. Lawson, T. E. Farina
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On the interaction of 2-amino-7-phosphono-heptanoic acid and quinolinic acid in mice
European Journal of Pharmacology, 1983It is shown that (a) peripheral injections of quinolinic acid cause neuronal excitation with a latency much less than that of convulsions due to quinolinic acid and (b) peripherally injected 2-amino-7-phosphono-heptanoic acid (2APH) does antagonise neuronal excitation due to quinolinic acid applied locally by microiontophoresis.
M N, Perkins, T W, Stone
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Journal of Chemical & Engineering Data, 2004
Vapor pressure data were measured for the following carboxylic acids: propionic, butyric, isobutyric, valeric, isovaleric, hexanoic, and heptanoic acids. The pressure ranged between ∼5 kPa and atmospheric pressure (at sea level), and the corresponding temperatures were between 85 and 180 °C, depending on the acid being measured.
Scott L. Clifford +2 more
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Vapor pressure data were measured for the following carboxylic acids: propionic, butyric, isobutyric, valeric, isovaleric, hexanoic, and heptanoic acids. The pressure ranged between ∼5 kPa and atmospheric pressure (at sea level), and the corresponding temperatures were between 85 and 180 °C, depending on the acid being measured.
Scott L. Clifford +2 more
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AFM study of calcite surface exposed to stearic and heptanoic acids
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2008Atomic force microscopy (AFM) was used to investigate the physical properties of calcite surfaces after exposure to short chain alkanes and organic acids and to compare micrometer scale behaviour with macroscopic surface wetting previously observed using contact angle measurement.
Karoussi, Omid +4 more
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