Results 211 to 220 of about 3,817 (238)
Some of the next articles are maybe not open access.
Determination of ricinoleic acid by differentiating titrations
Journal of the American Oil Chemists' Society, 1965AbstractA technique based on a method of differentiating titrations was developed for the resolution of mixtures of ricinoleic, sulfuric and ethylsulfuric acids. The total and partial acid values were determined by potentiometric titration with a glass‐calomel electrode using aqueous sodium hydroxide as titrant.
H. W. Prengle +2 more
openaire +2 more sources
Lactic Acid and Ricinoleic Acid Based Copolyesters
Macromolecules, 2005Copolyesters based on purified ricinoleic (RA) and lactic (LA) acids with different RA:LA ratios were synthesized by thermal polycondensation and by transesterification of high molecular weight poly(lactic acid) (PLA) with ricinoleic acid and repolyesterification.
Abraham J. Domb, Raia Slivniak
openaire +2 more sources
The Journal of Chemical Thermodynamics, 2012
Abstract Standard energies of combustion of ricinoleic acid and methyl ricinoleate were measured experimentally by using a semi-micro bomb calorimeter. The energies of combustion of ricinoleic acid and methyl ricinoleate were used to derive the corresponding standard molar enthalpies of formation ( - Δ f H m ∘ ) in liquid
Eduardo Martínez +3 more
openaire +2 more sources
Abstract Standard energies of combustion of ricinoleic acid and methyl ricinoleate were measured experimentally by using a semi-micro bomb calorimeter. The energies of combustion of ricinoleic acid and methyl ricinoleate were used to derive the corresponding standard molar enthalpies of formation ( - Δ f H m ∘ ) in liquid
Eduardo Martínez +3 more
openaire +2 more sources
Stable polyanhydride synthesized from sebacic acid and ricinoleic acid
Journal of Controlled Release, 2017Poly(anhydride) are unstable and prone to hydrolytic degradation and depolymerisation via anhydride interchange. They are stored at -20°C, packed under inert atmosphere until use. We synthesized a new poly(anhydride) from ricinoleic (RA) and sebacic (SA) acid with alternating ester-anhydride structure that is stable at 25°C for over 18months.
Ron Schlinger +7 more
openaire +3 more sources
Hydroboration-oxidation of ricinoleic acid derivatives
Russian Journal of Organic Chemistry, 2008The regioselectivity in the hydroboration-oxidation of ricinoleic acid derivatives only slightly depends on the configuration of the optically active center: the fraction of the resulting 1,3-diol is larger by 6–10% than that of the 1,4-isomer.
O. V. Shitikova +5 more
openaire +2 more sources
Ricinoleic acid inLinum mucronatum seed oil
Lipids, 1971AbstractLinum mucronatum seed oil contains 15% ricinoleic [(+)‐12‐D‐hydroxy‐cis‐9‐octadecenoic] acid, previously unknown in the Linaceae. Identification was made by IR, gas liquid chromatography, nuclear magnetic resonance, ozonolysis and mass spectrometry. Other major components of the oil are oleic acid (24%) and linoleic acid (48%).
R. Kleiman, G. F. Spencer
openaire +3 more sources
A convenient synthesis of carboxyl‐labelled ricinoleic acid
Journal of Labelled Compounds and Radiopharmaceuticals, 1979AbstractThe exchange reaction of carboxyl groups with labelled carbon dioxide has been utilized for the preparation of carboxyl labelled ricinoleic acid. The thermal instability of ricinoleic acid is overcome by pyrolysis of the t‐butyl ether‐t‐butyl ester in the presence of labelled carbonate.
James D. McChesney, Phil Fraher
openaire +2 more sources
Ricinoleic Acid in Common Vegetable Oils and Oil Seeds
Lipids, 2008AbstractAn original gas chromatography/mass spectrometry method for quantifying trace amounts of ricinoleic acid (12‐hydroxy‐cis‐9‐octadecenoic acid) is detailed. Data are presented on trace amounts of ricinoleic acid found in several common vegetable oils and oils extracted from common oil seeds: e.g., ca. 30 ppm in commercial olive oil was the lowest
Akira Shibahara +2 more
openaire +3 more sources
Lactic and Ricinoleic Acid Based Copolyesters Stereocomplexation
Macromolecules, 2005A systematic study of the synthesis and stereocomplexation of l-lactic acid and ricinoleic acid based copolyesters is reported. l-lactic acid and ricinoleic acid based copolyesters were synthesized by melt condensation and transesterification of high-molecular-weight poly(lactic acid) (PLA) with ricinoleic acid and repolymerization by condensation to ...
Robert Langer +2 more
openaire +2 more sources
QSAR studies of antibacterial ricinoleic acid derivatives
Pharmaceutical Chemistry Journal, 2007A series of ricinoleic acid derivatives has been synthesized and tested for antibacterial activity with respect to four standard strains. Dibromoricinoleic acid (DBRA) showed high activity comparable with that of the reference drug ciprofloxacin. QSARs between various physicochemical indices and the antibacterial activity of a training set including 12
Avinash Dhake +2 more
openaire +2 more sources