Thermodynamic behaviour of binary systems of quinoline with methylene chloride, chloroform, carbon tetrachloride, benzene and cyclohexane. Vapour pressures and excess molar Gibbs energies

1993 ◽  
Vol 89 (14) ◽  
pp. 2429 ◽  
Author(s):  
Jagan Nath ◽  
S. S. Das
Keyword(s):  
Carbon Tetrachloride ◽  
Binary Systems ◽  
Methylene Chloride ◽  
Thermodynamic Behaviour ◽  
Gibbs Energies

The determination of heats of mixing

1952 ◽  
Vol 212 (1110) ◽  
pp. 406-425 ◽  
Keyword(s):  
Carbon Tetrachloride ◽  
Binary Systems ◽  
Methylene Chloride ◽  
Vapour Phase ◽  
Ethylene Dichloride ◽  
Binary Liquid ◽  
Heats Of Mixing ◽  
Liquid Systems ◽  
Improved Accuracy

A calorimeter has been designed for measuring the heats of mixing of binary liquid systems, which eliminates the need to correct for changes in the composition of the vapour phase on mixing. Improved accuracy has thus been obtained. Heats of mixing have been measured for the three binary systems formed from the three components carbon tetrachloride, chloroform and methylene chloride, and also for the systems benzene + carbon tetrachloride and benzene + ethylene dichloride. Reports that the last system is ideal have been disproved.

Diffusion of Methane and Chloromethanes in Air

1971 ◽  
Vol 49 (1) ◽  
pp. 74-77 ◽  
Author(s):  
M. Cowie ◽  
Harry Watts
Keyword(s):  
Carbon Tetrachloride ◽  
Diffusion Coefficients ◽  
Methylene Chloride ◽  
Methyl Chloride ◽  
Diffusion Cell ◽  
Infrared Spectrophotometry ◽  
Gaseous Diffusion ◽  
Simple Diffusion ◽  
Concentration Changes

The binary gaseous diffusion coefficients of air with methane, methyl chloride, methylene chloride, chloroform, and carbon tetrachloride at 298.2 °K and 1 atm have been determined. A simple diffusion cell was used, in which concentration changes of the diffusing gas were followed by infrared spectrophotometry.

Excess properties of binary systems formed by carbon tetrachloride with isopropanol and n-butanol

1997 ◽  
Vol 136 (1-2) ◽  
pp. 307-314 ◽  
Author(s):  
L Simoiu ◽  
I Trandafir ◽  
M Pleniceanu ◽  
M Baniceru
Keyword(s):  
Carbon Tetrachloride ◽  
Binary Systems ◽  
Excess Properties

Analysis of a Single Crop Extract for Substituted Urea Herbicides and Metabolites, Chlorinated Insecticides, and Amitrole

1969 ◽  
Vol 52 (3) ◽  
pp. 526-532
Author(s):  
John H Onley ◽  
George Yip
Keyword(s):  
Carbon Tetrachloride ◽  
Methylene Chloride ◽  
Established Method ◽  
Florisil Column ◽  
Aqueous Acetonitrile ◽  
Sample Extract ◽  
Ether Extraction ◽  
Layer Chromatography ◽  
Colorimetric Procedure ◽  
Substituted Urea

Abstract An established method for chlorinated insecticides has been modified and extended to include substituted urea herbicides, some urea metabolites, and amitrole. Starting with an acetonitrile sample extract, chlorinated insecticides are removed by petroleum ether extraction for the usual cleanup and determination. The aqueous acetonitrile phase is next extracted with methylene chloride and carbon tetrachloride to isolate the urea compounds (chloroxuron, diuron, fenuron, fluometuron, linuron, metobromuron, monuron and neburon) and some of their metabolites. This combined extract is chromatographed on a MgO-cellulose-Florisil column from which two eluatcs are obtained: one contains the substituted urea herbicides, aniline metabolites, and one compound with the urea moiety and the second contains four compounds with the urea moiety. Both eluates are analyzed by thin layer chromatography. Finally, the aqueous acetonitrile extract is passed through a column of Amberlite IR-120 resin. Amitrole (3-AT), which is absorbed on the resin, is removed with NH4OH and determined by a colorimetric procedure. Recoveries of all compounds from samples fortified at 0.05–5 ppm ranged between 70 and 106%. Apparent limit of sensitivity was 0.05 ppm for both the substituted urea herbicides and their metabolites and for amitrole. Recoveries for the chlorinated insecticides at 0.005 ppm ranged between 76 and 104%.

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