Low temperature vulcanising

The sodium salt (Pr 0)2PSSNa is useful as an activator of thiazole accelerators used for the low-temperature vulcanisation of rubber. Other uses of [(RO)2PS2l2Ni, for example, are as anti-oxidants in plastics (Section 12.15). Sodium and ammonium dialkylphosphoro-dilhioates (R= Et or Pr) are used as flotation agents to suspend and separate metallic ores from unwantedcontaminants. Dithiophosphinic acids, R2P(S)SH, can be used to extract Am " and Ln " from radioactive wastes [41]. 

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