Potassium sulphate, anhydrous ≥99.0%, powder ACS

Supplier: MP Biomedicals

0215256490 0215256491
ICNA0215256490EA 215 SGD
ICNA0215256490 ICNA0215256491
Potassium sulphate, anhydrous ≥99.0%, powder ACS
Potassium sulphate

Potassium sulfate is used in various industrial and research applications. Industrial uses include fertilizer production, the manufacture of potassium alum, potassium carbonate, and glass.


Analytical applications include the Kjeldahl method for the determination of nitrogen and protein in foodstuffs. It has been used to research electrostatic effects on pKa values of amino acid residues in the staphylococcal nuclease. When a buffer with a high zwitterionic salt concentration is used, Potassium sulfate can be used to improve protein separation via capillary zone electrophoresis. It has been reported to be useful to adsorb immune complexes on agarose derivative adsorbents.


Soluble in water (1 g/8.3 ml at 25 °C; 1 g/4 ml boiling water) or glycerol (1 g/75 ml); insoluble in ethanol; the solubility in water is decreased in the presence of KCl or (NH₄)₂SO₄ and is practically insoluble in a saturated solution of the latter.

Formula: K₂SO₄
MDL Number: MFCD00011388
CAS Number: 7778-80-5

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Specification Test Results

Synonyms Sulphuric Acid Dipotassium Salt; Sal polychrestum; Arcanum duplicatum; Tartarus vitriolatus
Form Powder
Storage Store at Room Temperature (15 to 30 °C)
Assay ≥99,0% K2SO4
Heavy Metals Lead (as Pb): ≤5 ppm; Iron (Fe): ≤5 ppm
Insoluble Matter ≤0,01%
pH 5,5 - 8,5 (5% soln, 25 °C)
Chloride (Cl) ≤0,001%
Nitrogen Compounds (as N) ≤5 ppm
Calcium (Ca) ≤0,01%
Magnesium (Mg) ≤0,005%
Sodium (Na) ≤0,02%

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