Presence Of Ethyl Alcohol Research Articles

Polycondensation of the ethyl ester of glycine in the presence of ethyl alcohol

1. The effect of ethyl alcohol on the polycondensation of the ethyl ester of glycine was investigated. 2. It was established that addition of ethyl alcohol accelerates the polycondensation in the first, slow stage of the reaction and leads to an increase in the yield of diketopiperazine

Studies on the effect of non-electrolytes on the stability of copper ferrocyanide sol

In general the addition of non-electrolyte to hydrophobic sols results into an irregular change in the stability of the latter, towards electrolyte coagulation. Precipitation concentration of potassium chloride for copper ferrocyanide sol changes in the presence of ethyl alcohol, glycol or glycerol. Ethyl alcohol sensitizes while others stabilise the sol to different extents. In presence of these alcohols, electrolytic coagulation of copper ferrocyanide sol is attended by a decrease in the conductance and hydrogen ion concentration as compared to a pure sol (sol without non-electrolyte).

Determination of methyl ketones by pH measurement

A rapid and accurate method for the determination of methyl ketones in presence of ethyl alcohol is described; it depends upon the measurement of pH after the liberation of free hydrochloric acid in the hydroxylamine hydrochloride reaction ▪

Composition of Wines. I. Organic Constituents

This chapter is limited to the organic components of wines and to publications in the period 1930 to 1953. Both phases of enology have been reviewed, but it is obvious that the more significant studies have been those of a physical-chemical nature. The organic components of wines have been discussed in broad general groups-acids, carbohydrates, alcohols, etc. For each component, information on the methods of determination has been given first, followed by a review of work on the occurrence or significance of the compound. Wines are classified, taxed, and bought and sold according to alcohol content. Therefore, great attention has been given to its accurate and rapid determination. Some errors of the method and of the instruments in the ebulliometric determination of alcohol have been pointed out. Further difficulties in determining the alcohol content of sweet wines using the ebullioscope were found. Another physical method is based on the principle of extracting the alcohol with an immiscible solvent and reading the per cent alcohol from the position of the meniscus. The disagreement on the exact relation between the sugar content of the must and the resulting alcohol content of the wine was reviewed. The difficulty of determining methyl alcohol in the presence of ethyl alcohol was stressed. The mechanism of the formation of higher alcohols has been studied, which reported that higher alcohol formation coincided with the beginning of the main fermentation

Spectrophotometric study of the formaldehyde-leuco-methylene blue reaction

The sensitivity of the reaction between foimaldchyde and Icuco-mcthyleno blue has been found to be increased in the presence of ethyl alcohol, acetone, dicthyl ketone and methyl ethyl ketone. Acetone has been found to be most effective. Sensitisers increase the absorption maximum and stabilise it, while the rate of development of methylene blue colour is slowed down. Sensitivity also depends upon the content of thiosulphate used to prepare the Icuco-base; a smaller amount of thiosulphate increases greater sensitivity.

Une réaction micro-photochimique du tungsténe

A micro-photochemical reaction is described, which is based on the fact that ultraviolet radiation reduces hexavalent tungsten (freshly prepared tungstic acid) to tetravalent tungsten in the presence of ethyl alcohol. The method is simple and rapid, having the advantage that the other elements, which usually accompany tungsten, do not interfere. The accuracy of the method is of the order of some y of tungsten. The technique, which is described in detail, can also be used in field tests (mines, shafts).

Mechanism of Formation of Ether, Using the Heavy Oxygen Isotope 18O as a Tracer Element

THIS communication gives a preliminary report on the investigation of the mechanism of formation of diethyl ether by interaction of diethyl sulphate and ethyl alcohol, using the heavy oxygen isotope, 18O, as a tracer element. The object of the work is to decide the positions at which the bonds break during the reaction. There are two distinct possibilities, as is shown by the equations below, and it was thought that, by allowing the reaction to occur in the presence of ethyl alcohol enriched in the heavy oxygen isotope, the correct mechanism might be discovered.

Glycerol Oxidation and Muscular Exercise

Summary.The fall in the glycerol concentration in the blood after oral administration of glycerol is slowed down during muscular work.This effect is assumed to be due to the liberation of glycerol from the fats metabolized during the work.If triglycerides are broken down in the working muscles, then at any rate the glycerol component is not directly oxidized in the muscles.The presence of ethyl alcohol in the blood causes a marked depression in glycerol oxidation, a further indication of the close relationship between the metabolism of the two compounds.

Tryptic Digestion of Bovine Serum and Other Proteins in the Presence of Ethyl Alcohol

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTryptic Digestion of Bovine Serum and Other Proteins in the Presence of Ethyl AlcoholEdwin A. Risley, Ann C. Buffington, and L. Earle ArnowCite this: J. Am. Chem. Soc. 1944, 66, 3, 398–401Publication Date (Print):March 10, 1944Publication History Published online1 May 2002Published inissue 10 March 1944https://doi.org/10.1021/ja01231a026RIGHTS & PERMISSIONSArticle Views79Altmetric-Citations5LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (438 KB) Get e-Alerts Get e-Alerts

Determination of Methanol in the Presence of Ethyl Alcohol

Determination of Methanol in the Presence of Ethyl Alcohol

Improved Denigès Test for the Detection and Determination of Methanol in the Presence of Ethyl Alcohol.

Improved Denigès Test for the Detection and Determination of Methanol in the Presence of Ethyl Alcohol.

Estimation of acetone in presence of ethyl alcohol

Estimation of acetone in presence of ethyl alcohol

Estimation of methyl alcohol in presence of ethyl alcohol

The first page of this article is displayed as the abstract.

Detection and Estimation of Minute Quantities of Formaldehyde in Presence of Hexamethylenamine and of Methyl Alcohol in Presence of Ethyl Alcohol

Detection and Estimation of Minute Quantities of Formaldehyde in Presence of Hexamethylenamine and of Methyl Alcohol in Presence of Ethyl Alcohol

The detection of small quantities of methyl alcohol in the presence of ethyl alcohol

The detection of small quantities of methyl alcohol in the presence of ethyl alcohol

I.—The estimation of methyl alcohol in presence of ethyl alcohol

The first page of this article is displayed as the abstract.

On the estimation of methylalcohol in presence of ethylalcohol

On the estimation of methylalcohol in presence of ethylalcohol