[3] In another reaction PSCl3 reacts with KSO2F to make PSF3, KCl and SO2, but also partly yields PSClF2.

[4] A small percentage of is formed when F2P(=S)−S−P(−CF3)2 or (F3C−)2P(=S)−S−PF2 reacts with chlorine.

[5] It can be formed from difluoro(germylthio)phosphine: Although phosphorothioic chloride difluoride does not spontaneously ignite in air, mixtures with air are explosive.

The gas is hydrolysed slowly by water vapour.

[7][8] The nuclear magnetic resonance coupling constants for 31P are 1220.