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The domestic potassium sulphate market continued to rise in mid-February, and the spot price increased slightly. On February 17, the average domestic SOP prices were 4,333.33 RMB/ton, up 4.84% from the beginning of the month. Domestic potash fertiliser production is currently ramping up, and the results are promising. In the early stages, the supply of potash fertiliser firms using the domestic resource technique increased, the price of salt lake and Zangge potassium chloride remained consistent, and the volume steadily increased, but market supply was still limited and supply was quite tight.

The domestic industry's load position is currently relatively low, and the overall operating rate is less than 50%. Potassium sulphate is also in short supply on the spot market. On the cost front, there is now a positive influence. Following the early winter storage, the traders' supply has been depleted. Because of the recent adoption of the domestic potash fertiliser contract, current market trade has picked up, and merchants have a positive attitude.

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Procurement Resource provides latest prices of SOP. Each price database is tied to a user-friendly graphing tool dating back to 2014, which provides a range of functionalities: configuration of price series over user defined time period; comparison of product movements across countries; customisation of price currencies and unit; extraction of price data as excel files to be used offline.

Chart Description

Procurement Resource provides prices of SOP for several regions around the globe, which are as follows:

  • North America
  • South America
  • Europe
  • Asia Pacific
  • Middle East
  • Africa

About SOP

SOP refers to Sulphate of Potash which is a mixture of both potash and sulfur. The general composition for Sulphate of Potash involves 51% soluble potash and about 18% sulfur. It also includes traces of metals like calcium and magnesium. SOP is majorly used as a fertilizer and acts as an excellent source of potassium and sulfur nutrients. It is a low-chloride type of a fertilizer that aids the plants to resist diseases and pests.

Chemical Formula:

  • K2SO4


  • Sulphate of Potash
  • Potassium Sulphate

Molecular Weight:    

  • 174.259 g/mol

Industrial Uses

  • Fertilisers
  • Glass manufacturing
  • Mining
  • Propellant

Production Processes

  • Production of SOP by Decantation process

SOP is produced by Decantation process where Langbeinite is treated with a concentrated solution of Potassium chloride which results in the precipitation of potassium sulphate. The precipitated potassium sulphate is then separated by decantation. SOP can also be prepared by Mannheim Process.

Supplier Database

  • Agrico Canada L.P.
  • Ameropa Australia Pty Ltd
  • Archean Group
  • AG CHEMI GROUP s.r.o.
  • AgroLiquid
  • ArrMaz Gulf Chemicals, Ltd.

Note: Our supplier search experts can assist your procurement teams in compiling and validating a list of suppliers indicating they have products, services, and capabilities that meet your company's needs.


The displayed pricing data is derived through weighted average purchase price, including contract and spot transactions at the specified locations unless otherwise stated. The information provided comes from the compilation and processing of commercial data officially reported for each nation (i.e. government agencies, external trade bodies, and industry publications).

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