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|Section2= |Section3= |Section7= |Section8= }} Thiophosphoryl fluoride is an inorganic molecular gas with formula PSF3 containing phosphorus, sulfur and fluorine. It spontaneously ignites in air and burns with a cool flame. The discoverers were able to have flames around their hands without discomfort, and called it "probably one of the coldest flames known".〔 The gas was discovered in 1888.〔 It is useless for chemical warfare as it burns immediately and is not toxic enough. ==Preparation== Thiophosphoryl fluoride was discovered and named by J. W. Rodger and T. E. Thorpe in 1888. They prepared it by heating arsenic trifluoride and thiophosphoryl chloride together in a sealed glass tube to 150 °C. Also produced in this reaction was silicon tetrafluoride and phosphorus fluorides. By increasing the PSCl3 the proportion of PSF3 was increased. They observed the spontaneous inflammability. They also used this method: :3 PbF2 + P2S5 → 3 PbS + PSF3 at 170 °C, and also substituting a mixture of red phosphorus and sulfur, and substituting bismuth trifluoride.〔 Another way to prepare PSF3 is to add fluoride to PSCl3 using sodium fluoride in acetonitrile. A high yield reaction can be used to produce the gas:〔 P4S10 + 1 2HF → 6 H2S + 4 PSF3 Under high pressure phosphorus trifluoride can react with hydrogen sulfide to yield: :PF3 + H2S → PSF3 + H2 (100 megabars at 200 °C) Another high pressure production uses phosphorus trifluoride with sulfur.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Thiophosphoryl fluoride」の詳細全文を読む スポンサード リンク
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