Determination of Dimethyl Ether in Methyl Chloride

1949 ◽  
Vol 21 (10) ◽  
pp. 1165-1168 ◽  
Author(s):  
E. B. Claiborne ◽  
M. C. Fuqua
Keyword(s):  
Dimethyl Ether ◽  
Methyl Chloride

Determination of Methyl Chloride in Air

1946 ◽  
Vol 18 (5) ◽  
pp. 314-316 ◽  
Author(s):  
J.L. Franklin ◽  
E.L. Gunn ◽  
R.L. Martin
Keyword(s):  
Methyl Chloride

CATIONIC COPOLYMERIZATION OF ISOBUTYLENE WITH ISOPRENE: KINETICS OF THE PROCESS AND DETERMINATION OF KINETIC CONSTANTS

2015 ◽  
Vol 88 (4) ◽  
pp. 574-583 ◽  
Author(s):  
N. V. Ulitin ◽  
K. A. Tereshchenco ◽  
D. A. Shiyan ◽  
G. E. Zaikov
Keyword(s):  
Experimental Data ◽  
Molecular Weight ◽  
Cationic Polymerization ◽  
Methyl Chloride ◽  
Theoretical Description ◽  
Kinetic Constants ◽  
Molecular Weight Characteristics ◽  
Cationic Copolymerization ◽  
Kinetics Of

ABSTRACT A theoretical description has been developed of the kinetics of isobutylene with isoprene (IIR) cationic polymerization in the environment of methyl chloride on aluminum trichloride as the catalyst. Based on experimental data on the kinetics of copolymerization (isobutylene conversion curve) and the molecular weight characteristics of the copolymer of IIR, kinetic constants for the process were found. Adequacy of the developed theoretical description of the kinetics of the IIR copolymerization process was confirmed by comparing the experimental molecular-weight characteristics calculated by this description, independent characteristics, and IIR unsaturation.

Gas Chromatographic Determination of Diethylstilbestrol Dimethyl Ether in Diethylstilbestrol

1972 ◽  
Vol 55 (1) ◽  
pp. 185-186
Author(s):  
F E Gainer ◽  
W J Chiasson
Keyword(s):  
Aqueous Solution ◽  
Dimethyl Ether ◽  
Chloroform Solution ◽  
Internal Standard ◽  
Chromatographic Determination ◽  
Detector Response ◽  
Chloroform Layer ◽  
Internal Standard Peak ◽  
Linear Plot

Abstract A GLC method is described for the determination of the dimethyl ether of diethylstilbestrol (DME) in diethylstilbestrol (DES). A 1 g sample of DES is dissolved in an aqueous solution of 0.5N NaOH and then extracted with a chloroform solution containing benefin, the internal standard. An aliquot of the chloroform layer is chromatographed and the DME peak is measured relative to the internal standard peak. The method was tested for accuracy within the 11–110 ppm range and a linear plot of detector response vs. concentration was obtained.

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