The Adsorption of Water, Ethyl Alcohol, Ethyl Acetate, and Acetic Acid Vapors by Tungstic and Zirconium Oxides. Its Bearing on Heterogeneous Catalysis

1929 ◽  
Vol 33 (5) ◽  
pp. 692-704 ◽  
Author(s):  
J. N. Pearce ◽  
M. J. Rice
Keyword(s):  
Acetic Acid ◽  
Heterogeneous Catalysis ◽  
Ethyl Acetate ◽  
Ethyl Alcohol ◽  
Zirconium Oxides ◽  
Adsorption Of Water ◽  
Alcohol Ethyl

Ethyl Alcohol-Ethyl Acetate and Acetic Acid–Ethyl Acetate Systems

1937 ◽  
Vol 29 (6) ◽  
pp. 709-710 ◽  
Author(s):  
C. C. Furnas ◽  
W. B. Leighton
Keyword(s):  
Acetic Acid ◽  
Ethyl Acetate ◽  
Ethyl Alcohol ◽  
Alcohol Ethyl

THE ANALYSIS OF MIXTURES OF ETHYL ALCOHOL, ETHYL ACETATE, ACETIC ACID AND WATER

1928 ◽  
Vol 50 (4) ◽  
pp. 981-988 ◽  
Author(s):  
S. Poznanski
Keyword(s):  
Acetic Acid ◽  
Ethyl Acetate ◽  
Ethyl Alcohol ◽  
Alcohol Ethyl

scholarly journals Slow oxidations at high pressures I—Methane and ethane, II—Methyl alcohol, ethyl alcohol, acetaldehyde, and acetic acid

1934 ◽  
Vol 147 (862) ◽  
pp. 555-571 ◽  
Keyword(s):  
High Pressure ◽  
Acetic Acid ◽  
Optimum Condition ◽  
Ethyl Alcohol ◽  
Methyl Alcohol ◽  
High Pressures ◽  
Hydrocarbon Gases ◽  
Hydrocarbon Combustion ◽  
Liquid Products ◽  
Alcohol Ethyl

In two recent papers from these laboratories it was shown that when methane- and ethane-oxygen mixtures containing excess of the hydrocarbon react at high pressure various liquid products can be isolated. For methane-oxygen mixtures methyl alcohol and water are found, and for ethane-oxygen mixtures ethyl alcohol, acetaldehyde, methyl alcohol, acetic acid, formic acid, and water. These products being important for the light they throw on the mechanism of hydrocarbon combustion and because they suggest means for using waste hydrocarbon gases, further experiments have now been made with the object of finding the order of their formation and the optimum condition for their survival.

Phase Equilibria in Ethyl Alcohol–Ethyl Acetate–Water System

1949 ◽  
Vol 41 (10) ◽  
pp. 2352-2358 ◽  
Author(s):  
John Griswold ◽  
Pao L. Chu ◽  
W. O. Winsauer
Keyword(s):  
Phase Equilibria ◽  
Ethyl Acetate ◽  
Ethyl Alcohol ◽  
Water System ◽  
Alcohol Ethyl

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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