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POTASSIUM SULPHATE Extra Pure

sulphate of potash, arcanite

COAs

Packings

500 g (00500)

5000 g (05000)

25 Kg (0025K)

50 Kg (0050K)

1PW1200500 1PW1206500 1PDL00030K 1PDL00040K
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Article No. 05451 Grade Extra Pure
Purity 98.5% CAS No. 7778-80-5
Molecular Formula K2SO4 Molecular Weight 174.27
H.S. Code 2833.2990 Shelf Life 60 Months

Physical Properties

Physical state at 20 °C Solid Colour White crystalline
Odour Odorless pH value ~7
Melting point/ Freezing point [°C] 1067°C Boiling point [°C] 1689°C
Density [g/cm3] 2.662 Solubility in water [% weight] 110 g/l (20°C)

Specifications

Appearance White crystalline powder Assay (Titration after Ion exchange) 98.5 - 101.0%
pH (5% solution) 5.5 - 8.5 Chloride (Cl) Max 0.004%
Heavy metal (as Pb) Max 0.002% Iron (Fe) Max 0.001%
Magnesium (Mg) Max 0.002% Calcium (Ca) Max 0.02%
Loss on drying (at 105°C) Max 1.0%

Safety Information and Hazard Symbols

Safety Statement: 22-24/25
Revision Date: 06-Mar-2026

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