Potassium sulphate, anhydrous ≥99.0%, powder ACS
Supplier: MP Biomedicals
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 MW: 174,26 g/mol |
MDL Number:
MFCD00011388 CAS Number: 7778-80-5 |
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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