Results 131 to 140 of about 7,067 (170)
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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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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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Extraction of Lanthanides with Mixtures of Crown Ethers and Heptanoic Acid
Solvent Extraction and Ion Exchange, 2003Abstract The liquid extraction of some lanthanides (Pr, Gd, and Yb) with mixtures of heptanoic acid H3C(CH2)5COOH (HA) and crown ethers (B) benzo‐15‐crown‐5 (B15C5), dicyclohexano‐18‐crown‐6 (DH18C6), and 18‐crown‐6 (18C6) in carbon tetrachloride (CCl4) as a solvent from aqueous chloride medium at constant ionic strength μ = 0.1 is investigated.
G. Georgiev, M. Zakharieva
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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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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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Decarbonylation of heptanoic acid over carbon-supported platinum nanoparticles
Green Chem., 2014The decarbonylation and decarboxylation of heptanoic acid over carbon-supported Pt nanoparticles were studied in a continuous flow fixed bed reactor at 573 K and 37 bar for liquid-phase operation and 1 bar for gas-phase operation. Under liquid-phase conditions, the TOF over Pt supported on Norit carbon was 0.0052 s−1 and independent of Pt loading.
Juan A. Lopez-Ruiz, Robert J. Davis
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ChemInform Abstract: n‐Heptanoic Acid by the Caustic Oxidation of 2‐Octanol.
ChemInform, 1989AbstractThe alkaline oxidation is achieved by introducing 2‐octanol (I), saturated with water, into a hot melt of NaOH and KOH.
N. E. LAWSON, T. E. FARINA
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Growth and Polymer Incorporation of Pseudomonas oleovorans on Alkyl Esters of Heptanoic Acid
Macromolecules, 1994Heptanoic acid and its methyl, ethyl and propyl esters were used as substrates in order to determine the growth behavior of P. oleovorans on these substrates. It was found that the cell densities reached during the fermentations depended strongly on the substrates concentrations.
Carmen Scholz +2 more
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The Journal of Physical Chemistry B, 2001
The consequence of mixing an alkanoic acid with an alkylamine is a proton transfer between the acid and the amine leading to a complexation, which is dependent on the mixing ratio between the two components. If water is added, the formed ammonium alkanoate will have surfactant properties.
Stefan Karlsson +5 more
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The consequence of mixing an alkanoic acid with an alkylamine is a proton transfer between the acid and the amine leading to a complexation, which is dependent on the mixing ratio between the two components. If water is added, the formed ammonium alkanoate will have surfactant properties.
Stefan Karlsson +5 more
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ChemInform Abstract: Synthesis of 1‐Aminocyclopropyl‐pentanoic and ‐heptanoic Acid Derivatives.
ChemInform, 2008AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Martina Gensini +2 more
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