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Potassium sulfate (K2SO4)- Crystalline

Potassium sulfate (K2SO4)- Crystalline

CAS: 7778-80-5
Molecular Formula: K2SO4
Purity: 99%
Products Code: TR19160801CY
Specification Model: -100 Mesh
Hazardous Class: Class 9
EINECS No.: 231-915-5
UN No.: UN3077
Package Class: PGIII
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Potassium sulfate (K2SO4)- Crystalline introduce:



Potassium sulfate (in British English potassium sulphate (SOP), also called sulphate of potash, arcanite, or archaically known as potash of sulfur) is the inorganic compound with formula K2SO4. It is a white water-soluble solid. 

Chemical formula:K2SO4

Molar mass:174.259 g/mol

Appearance:White solid


Density:2.66 g/cm3

Melting point:1,069 °C (1,956 °F; 1,342 K)

Boiling point:1,689 °C (3,072 °F; 1,962 K)

Solubility in water:111 g/L (20 °C);120 g/L (25 °C);240 g/L (100 °C)

Solubility:slightly soluble in glycerol;insoluble in acetone, alcohol, CS2

Magnetic susceptibility (χ):−67.0·10−6 cm3/mol

Refractive index (nD):1.495

Crystal structure:orthorhombic




Potassium sulfate is used in the production of fertilizers (i.e. providing potassium and sulfur), potassium alum, potassium carbonate and glass. In analytical chemistry, it is used in the determination of nitrogen by the Kjeldahl method and protein in foodstuffs. Also, it is used in the electrostatic effects on pKa values of amino acid residues in the staphylococcal nuclease. It is used in the separation of protein through electrophoresis and also serves as a laboratory reagent.
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