Qrop™ SOP

Qrop™ SOP G and Qrop™ SOP S:

  • Are the most concentrated chloride-free potassium sources in the market.
  • Are of natural origin and the extraction method is environmentally friendly. Both have a low salinity index (46,1), IFDC 1979.
  • Both contain low-solubility potassium and sulphur, which are much required at the start of the growth cycle of crops.
  • Qrop™ SOP G (granulated) and Qrop™ SOP S (standard) are two highly concentrated products. They supply 51 % of potassium oxide (K2O) and 18 % of sulphur (S).
  • Are virtually free of sodium, heavy metals and impurities and they are chloride-free. They have a very low salinity index which is especially appropriate for those crops that are susceptible to chloride and susceptible to saline conditions of intensive production systems.
  • Are extracted from subterranean lakes by means of environmentally friendly technologies. Therefore it is permitted to use both products in organic agriculture.
  • Can be directly applied to the soil. Both are compatible with all the fertilizers in the market which means that top quality physical blends can be made with Qrop™ SOP.

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Declared Contents

Potassium oxide (K2O)


Sulphur (S)




Solubility (in water at 20 °C)

11,1 g/100 cm³


1,7 tonne/m³

Angle of repose (°)


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Additional information associated with a nutrient: Potassium

This product is recommended for

All the information is given to the best of SQM's knowledge and is believed to be accurate. Your conditions of use and application of the suggested products and recommendations are beyond our control. There is no warranty regarding the accuracy of any given data or statements. SQM specifically disclaims any responsibility or liability relating to the use of the suggested products and recommendations and shall under no circumstances whatsoever, be liable for any special, incidental or consequential damages which may arise from such use.

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