Ammonium Thiosulphate

Product Description

Analysis:  12-0-0-26S

Often abbreviated as ATS, this clear liquid produced by reacting sulfur dioxide, elemental S and aqueous ammonia.


  • Slightly basic pH
  • Highly soluble in water
  • Essentially noncorrosive and may be stored in mild steel, poly and aluminum vessels


  • Compatible with many other fluid fertilizers; commonly mixed with UAN to produce 28-0-0-5S
  • Nitrogen component is readily available for plant uptake
  • Thiosulphate breaks down into roughly equal parts sulphate (SO4) and elemental S, which extends the window of available S over more of the growing season


  • Thiosulphate isn’t generally available for plant uptake until soil microbes convert it to sulphate; this process can be delayed in cool soil temperatures

Application methods:

  • side-dress (surface applied) or banded (adjacent to the seedbed)


Contanda Hamilton; various external sources

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