Abstract
Infrared spectroscopy permits a determination of the concentration of CHCl2COCl, CH2ClCOCl and CCl3COCl as the organic impurities in TiCl4. In this study, an infrared spectrometer with ZnSe window and the cell of PTFE was assembled, and used to determine the concentration of three organic impurities. The detection limits of CCl3COCl, CHCl2COCl, CH2ClCOCl were determined as 3.16×10-3 μg/g 1.92×10-3 μg/g and 1.55×10-2 μg/g respectively. The new method is applied to quality control of refined TiCl4 from titanium sponge.
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