scholarly journals CLXI.—Equilibrium in the system: ethyl alcohol, acetic acid, ethyl acetate and water, and its apparent displacement by hydrogen chloride

1911 ◽  
Vol 99 (0) ◽  
pp. 1427-1432 ◽  
Author(s):  
William Jacob Jones ◽  
Arthur Lapworth
Keyword(s):  
Acetic Acid ◽  
Ethyl Acetate ◽  
Hydrogen Chloride ◽  
Ethyl Alcohol ◽  
Apparent Displacement

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

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.

XVII.The transport numbers of hydrogen chloride in ethyl alcohol

1931 ◽  
Vol 11 (68) ◽  
pp. 222-225 ◽  
Author(s):  
J.W. Woolcock ◽  
Harold Hartley ◽  
O.L. Hughes
Keyword(s):  
Hydrogen Chloride ◽  
Ethyl Alcohol ◽  
Transport Numbers
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