Project Details Solubility of Potassium Sulfate in Water (Solubility Data Series)

Project No.:
Start Date:
01 June 2011
End Date:
01 October 2013
Division Name:
Analytical Chemistry Division
Division No.:


This project will compile and evaluate all available solubility data in binary water systems with potassium sulfate. The results of this work will be prepared in the standard format of the IUPAC-NIST Solubility Data Series for publication in the Journal of Physical and Chemical Reference Data and for inclusion in a web-accessible database being prepared by the US National Institute of Standards and Technology (NIST).

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Under the direction of the Subcommittee on Solubility and Equilibrium Data (SSED) of the Analytical Chemistry Division, the IUPAC Solubility Data Project (SDP) compiles and evaluates data on solubility and disseminates the resulting information to the widest possible range of users by traditional (printed) and electronic (web-accessible database) means.

The Solubility Data Project has focused on five subject areas of wide importance. The systems to be covered by this project fit into one of these priority areas, Solubility Related to Industrial Processes. Potassium sulfate has been produced mainly as fertilizer (some 2/3 of its overall production). Its role during solidification of concrete has been discussed in substantial extent as well. Besides, the double sulfate KAl(SO4)2• 12 H2O has use in cosmetics and medicine because of its coagulation and astringent effect. Potassium sulfate itself is also connected with the additive E115. The respective systems were not covered yet in Solubility Data Series.


> Oct 2013 – Project completed

IUPAC-NIST Solubility Data Series. 93. Potassium Sulfate in Water
J. Phys. Chem. Ref. Data 41, 013103 (2012);

Last update: 1 Oct 2013