Heats of Mixing in the Ternary System Ethanol–Acetic Acid–Ethyl Acetate by a Rapid Approximate Method.

1942 ◽  
Vol 46 (3) ◽  
pp. 399-405 ◽  
Author(s):  
Bruce Longtin
Keyword(s):  
Acetic Acid ◽  
Ternary System ◽  
Ethyl Acetate ◽  
Approximate Method ◽  
Heats Of Mixing ◽  
Ethanol Acetic Acid

HEATS OF MIXING AND HEAT CAPACITIES IN THE SYSTEM: ACETIC ACID–CHLOROFORM–WATER, AT 25°

1965 ◽  
Vol 43 (5) ◽  
pp. 1004-1011 ◽  
Author(s):  
A. N. Campbell ◽  
J. M. T. M. Gieskes
Keyword(s):  
Acetic Acid ◽  
Ternary System ◽  
Binary Systems ◽  
Heat Capacities ◽  
Acid Water ◽  
Heats Of Mixing ◽  
Acetic Acid Water

The heats of mixing, HE, and heat capacities, at 25 °C, have been determined both for the ternary system: acetic acid–chloroform–water, and for the component binary systems: acetic acid–chloroform and acetic acid–water. The results are discussed in their bearing on the equilibria existing in these systems.

Excess enthalpies and heat of esterification reaction in ethanol + acetic acid + ethyl acetate + water system at 313.15 K

2019 ◽  
Vol 139 (2) ◽  
pp. 1301-1307 ◽  
Author(s):  
Alexandra Golikova ◽  
Nikita Tsvetov ◽  
Artemiy Samarov ◽  
Maria Toikka ◽  
Irina Zvereva ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Ethyl Acetate ◽  
Water System ◽  
Esterification Reaction ◽  
Excess Enthalpies ◽  
Ethanol Acetic Acid

Effect on Heterorhabditis indica of substances occurring in decomposing palm tissues infested by Rhynchophorus ferrugineus

Nematology ◽  
2003 ◽  
Vol 5 (5) ◽  
pp. 647-652 ◽  
Author(s):  
Abd-Elrahman Monzer ◽  
Randa Abd El-Rahman
Keyword(s):  
Acetic Acid ◽  
Ethyl Acetate ◽  
Entomopathogenic Nematode ◽  
In Vitro Study ◽  
Rhynchophorus Ferrugineus ◽  
Red Palm Weevil ◽  
Heterorhabditis Indica ◽  
Ethanol Acetic Acid ◽  
Candidate Species

AbstractEthanol, acetic acid and ethyl acetate are generated during the degeneration of palm tissues infested by the red palm weevil, Rhynchophorus ferrugineus Oliv. This in vitro study determined the influences of concentrations of 0.05-2% v/v of these substances in distilled water on the behaviour, survival and infectivity of the entomopathogenic nematode Heterorhabditis indica, a candidate species for control of R. ferrugineus. The observed responses of the nematode included normal movement, reversible partial paralysis and death. The estimated LC50 were 1.48, 0.25 and 0.14% for ethanol, acetic acid and ethyl acetate, respectively, but only 0.18% for the equal mixture of all three. Nematodes that survived treatment at the LC50 of each substance showed infectivity and penetration activity comparable to those of control nematodes. We conclude that it will be difficult to control R. ferrugineus using H. indica in the presence of these substances in palm trunks.

Excess enthalpies of the reactive system ethanol + acetic acid + ethyl acetate + water for chemically equilibrium states at 313.15 K

2018 ◽  
Vol 134 (1) ◽  
pp. 835-841 ◽  
Author(s):  
Alexandra Golikova ◽  
Nikita Tsvetov ◽  
Yuri Anufrikov ◽  
Maria Toikka ◽  
Irina Zvereva ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Ethyl Acetate ◽  
Equilibrium States ◽  
Reactive System ◽  
Excess Enthalpies ◽  
Ethanol Acetic Acid

Vapour-liquid equilibrium in the ternary system cyclohexane-acetic acid-propionic acid

1989 ◽  
Vol 54 (11) ◽  
pp. 2840-2847 ◽  
Author(s):  
Ivona Malijevská ◽  
Alena Maštalková ◽  
Marie Sýsová
Keyword(s):  
Acetic Acid ◽  
Ternary System ◽  
Propionic Acid ◽  
Activity Coefficients ◽  
Error Propagation ◽  
Analytical Techniques ◽  
Liquid Equilibrium ◽  
Consistency Test ◽  
Propagation Law ◽  
Equilibrium Data

Isobaric equilibrium data (P = 101.3 kPa) for the system cyclohexane-acetic acid-propionic acid have been measured by two different analytical techniques. Activity coefficients calculated by simultaneous solving of equations for the chemical and phase equilibria were subjected to a consistency test based on inaccuracies determined from the error propagation law, and were correlated by Wilson’s equation. The activity coefficients measured were compared with those calculated from binary vapour-liquid equilibrium data and with values predicted by the UNIFAC method.

Liquid−Liquid Equilibria of the Ternary System Water + Acetic Acid + 1-Heptanol

2000 ◽  
Vol 45 (2) ◽  
pp. 301-303 ◽  
Author(s):  
Adel S. Aljimaz ◽  
Mohamed S. H. Fandary ◽  
Jasem A. Alkandary ◽  
Mohamed A. Fahim
Keyword(s):  
Acetic Acid ◽  
Ternary System ◽  
System Water

Interlaboratory comparison of results of erythrocyte protoporphyrin analysis.

1978 ◽  
Vol 24 (12) ◽  
pp. 2135-2138 ◽  
Author(s):  
K W Jackson
Keyword(s):  
Acetic Acid ◽  
Hydrochloric Acid ◽  
Ethyl Acetate ◽  
Disease Control ◽  
Whole Blood ◽  
Interlaboratory Comparison ◽  
Direct Reading ◽  
Blood Samples ◽  
Erythrocyte Protoporphyrin ◽  
Whole Blood Samples

Abstract Each of 65 laboratories analyzed 10 whole-blood samples for erythrocyte protoporphyrin by one or more of several analytical procedures. These procedures were of two types: (a) extraction of protoporphyrin from the erythrocytes into ethyl acetate/acetic acid, re-extraction into hydrochloric acid, and fluorometric measurement; or (b) direct reading in a portable fluorometer (hematofluorometer), with no pretreatment of the blood sample. Interlaboratory correlation was generally poor, especially between laboratories using extraction procedures. Hematofluorometric results intercorrelated better, but they had a low bias as compared to the extraction approach. Nationwide standardization of the test is required to assure satisfactory interlaboratory performance and to identify laboratories whose results are sufficiently accurate to be used for interpretations according to guidelines set forth by the Center for Disease Control for erythrocyte protoporphyrin testing.

HSCCC Separation of Three Main Compounds from the Crude Extract of Dracocephalum Tanguticum by Using Dimethyl Sulfoxide as Cosolvent

2020 ◽  
Author(s):  
Xue Yang ◽  
Yongling Liu ◽  
Tao Chen ◽  
Nana Wang ◽  
Hongmei Li ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Ethyl Acetate ◽  
Dimethyl Sulfoxide ◽  
Efficient Method ◽  
Crude Extract ◽  
High Speed ◽  
Glacial Acetic Acid ◽  
Butyl Alcohol ◽  
Preparative Hplc ◽  
Counter Current

Abstract Separation of natural compounds directly from the crude extract is a challenging work for traditional column chromatography. In the present study, an efficient method for separation of three main compounds from the crude extract of Dracocephalum tanguticum has been successfully established by high-speed counter-current chromatography (HSCCC). The crude extract was directly introduced into HSCCC by using dimethyl sulfoxide as cosolvent. Ethyl acetate/n-butyl alcohol/0.3% glacial acetic acid (4: 1: 5, v/v) system was used and three target compounds with purity higher than 80% were obtained. Preparative HPLC was used for further purification and three target compounds with purity higher than 98% were obtained. The compounds were identified as chlorogenic acid, pedaliin and pedaliin-6″-acetate.

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