Phosphorus Trichloride, Analyzed Reagent

The requirements of the US Armed Forces for P trichloride are covered in two specifications, M1L-P-10398B (11 Feb 1969) for Phosphorus Trichloride, Technical, and MIL-P-51300 (12 March 1969) for Phosphorus Trichloride, Analyzed Reagent... 

Initially, experiments by Freeman et al. [19] in the laboratory using reagent-grade samples and both 532-nm and 632.8-nm visible excitation demonstrated that Raman analysis of the phosphorus trichloride system was feasible. When typical process materials were used, sample fluorescence prevented the analysis. Freeman et al. subsequently demonstrated that using 1064-nm excitaion and an FT-Raman spectrometer, it was possible to monitor on-line heel chlorination. The initial setup used an unfiltered windowed probe coupled to the analyzer (a FT-Raman spectrometer, excitation wavelength = 1064 nm) via a fiber-optic cable. 

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