Product name
Potassium sulfate
Specification
Reagent grade
Molecular formula
K2SO4
CAS
7778-80-5
H.S. CODE
3104300000
Molecular weight
174.24
Appearance
Colorless crystal powder
Package
25KG Woven bags or fiber drums
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Property:
Colorless crystalline or translucence powder. The relative density 1.769. Hot to 100 ℃ began to decompose into ammonia and acid hydrogen amines. Soluble in water, insoluble in ethanol and acetone.
Application:
Analytics reagents. As the support point electrochemical analysis and solution quality. Also used in the microbiological media, ammonium salt preparation.
Test standard:GB/T 16496—1996
Test items |
Specification |
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AR grade |
CP grade |
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Appearance |
Colorless crystal powder |
Colorless crystal powder |
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Assay |
≥99.0% |
≥98.5% |
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pH |
5.0-8.0 |
5.0-8.0 |
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Appearance of solution |
Conform |
Conform |
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Water insoluble |
≤0.005% |
≤0.01% |
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Chloride |
≤0.0005% |
≤0.001% |
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Total nitrogen |
≤0.0005% |
≤0.001% |
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Sodium |
≤0.03% |
≤0.1% |
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Calcium |
≤0.01% |
≤0.02% |
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Iron |
≤0.0002% |
≤0.0005% |
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Arsenic |
≤0.0001% |
≤0.0005% |
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Heavy metals |
≤0.0005% |
≤0.001% |
Storage:
Store in a cool, dry and well ventilated place. Keep away from incompatible substances. Keep container closed.