Determination of Trace Moisture Content in Dimethylacetamide by Gas Chromatography
Yong-A Choe, Chan-Hyon Han, Kye-Ryong Sin
TL;DR
This paper presents a gas chromatography method to accurately measure trace moisture in dimethylacetamide, crucial for polymer processing, using acetylene production after reaction with calcium carbide.
Contribution
It introduces a novel, precise method for detecting trace moisture in DMA via acetylene measurement, improving sensitivity and accuracy.
Findings
RSD of 2.272% for moisture measurement
Limit of measurement as low as 0.002%
Effective at 30°C with ultrasonic dispersion
Abstract
Dimethylacetamide is used as a solvent in polymer processing and moisture in DMA affects the morphology and mechanical properties of the polymer products. This paper describes a method for determination of trace moisture content in DMA by acetylene production - gas chromatography. In the condition of 30 centigrade and ultrasonic dispersion, moisture in DMA sample was reacted with calcium carbide and its product of acetylene was measured by gas chromatography. By this way, trace moisture in DMA was determined with RSD of 2.272 percent and limit of measurement was 0.002 percent.
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Taxonomy
TopicsAnalytical Chemistry and Chromatography · Chemical Thermodynamics and Molecular Structure · Crystallization and Solubility Studies