P0772

Sigma-Aldrich

Potassium sulfate

ReagentPlus®, ≥99.0%

Linear Formula:
K2SO4
CAS Number:
Molecular Weight:
174.26
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.55

Quality Level

product line

ReagentPlus®

assay

≥99.0%

form

powder

SMILES string

[K+].[K+].[O-]S([O-])(=O)=O

InChI

1S/2K.H2O4S/c;;1-5(2,3)4/h;;(H2,1,2,3,4)/q2*+1;/p-2

InChI key

OTYBMLCTZGSZBG-UHFFFAOYSA-L

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General description

Potassium sulfate is an inorganic salt that can be prepared by reacting phosphogypsum and potassium chloride. It forms needlelike mullite particles on heating with aluminum sulfate (Al2(SO4)3) and silicon dioxide (SiO2). Its application to the soil has been reported to minimize the bronzing of rice plants. Its surface integration growth kinetics has been obtained in the temperature range of 20-50°C. The theoretical heat capacity curve of potassium sulfate in vapor phase has been obtained.

Application

Potassium sulfate may be used as a sulfonating agent in the preparation of 4′-dibenzo-18-crown-6-sulfonic acid via sulfonation of dibenzo-18-crown-6.

Packaging

250 g in poly bottle
1 kg in poly bottle

Legal Information

ReagentPlus is a registered trademark of Sigma-Aldrich Co. LLC

storage_class_code

13 - Non Combustible Solids

WGK Germany

WGK 1

Flash Point F

Not applicable

Flash Point C

Not applicable

Certificate of Analysis

Certificate of Origin

Thermodynamics of the vaporization processes for potassium sulfate.
Eliezer I and Howald RA.
J. Chem. Phys. , 65(8), 3053-3062 (1976)
Growth and dissolution kinetics of potassium sulfate crystals in an agitated vessel.
Garside J, et al.
Industrial & Engineering Chemistry Fundamentals, 13(4), 299-305 (1974)
Sulfonation of benzocrown ethers by potassium sulfate in polyphosphoric acid.
Grebenyuk AD, et al.
Chemistry of Heterocyclic Compounds, 37(7), 822-826 (2001)
Conversion of phosphogypsum to potassium sulfate.
Aagli A, et al.
Journal of Thermal Analysis and Calorimetry, 82(2), 395-399 (2005)
Rice bronzing in Nigeria caused by nutrient imbalances and its control by potassium sulfate application.
Yamauchi M.
Plant and Soil, 117(2), 275-286 (1989)

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