| CAS No.: | 7778-80-5 |
|---|---|
| Formula: | K2so4 |
| EINECS: | 231-915-5 |
| Certification: | CIQ, ISO |
| Purity: | ≥99% |
| Type: | Potassium Sulphate |
| Customization: |
|---|
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Audited Supplier Chemical Name: Potassium Sulphate(Potassium sulfate)
Molecular Formula : K2SO4
Molecular weight: 174.27
CAS No: 7778-80-5
Assay:99.5%
MgO:16.0%min
Cl: 0.1% max
Mg: 9.8%min
| ITEMS | INDEX |
| Content (K2SO4 ) | ≥98% |
| K2O | ≥50% |
| S content | ≥17% |
| CL content | ≤1.5% |
| Pb | ≤1% |
| Water-insoluble | ≤0.05% |
| Free acidity (H2SO4) | ≤1.0% |
| Moisture | ≤0.5% |
|
Potassium Sulfate |
|
Gunpowder grade |
Feed grade |
Technical grade |
|
Assay(K2SO4)% |
≥99.0 |
≥99.0 |
≥98.5 |
≥98.5 |
|
Water Insoluble% |
≤0.01 |
≤0.02 |
-- |
-- |
|
(As)% |
≤0.0002 |
-- |
≤0.001 |
≤0.001 |
|
PH(50g/L,25ºC) |
6.0-8.0 |
6.0-8.0 |
-- |
-- |
|
(Cl), % |
≤0.001 |
≤0.002 |
-- |
-- |
|
Nitrogen(N)% |
-- |
-- |
-- |
-- |
|
Calcium (Ca)% |
≤0.02 |
≤0.03 |
-- |
-- |
|
Heavy metal(as Pb) % |
≤0.001 |
≤0.001 |
≤0.002 |
≤0.002 |
|
Iron (Fe)% |
≤0.0005 |
≤0.001 |
-- |
-- |
|
Sodium (Na)% |
≤0.1 |
-- |
-- |
-- |
|
Magnesium (Mg)% |
≤0.005 |
≤0.01 |
-- |
-- |
|
Fineness(120 meshes sieve) |
-- |
≤5 |
40 meshes sieving rate≥95 |
-- |
Potassium sulphate is colorless crystals, small hygroscopicity, not easy to agglomerate. With good physical properties, convenient for application,
it is a good water-soluble potash fertilizer. Potassium sulphate is chemically neutral, physiological acid fertilizer. It is a chlorine-free, high quality and efficient potash fertilizer. In particular, it is indispensable important fertilizer for the crops of tobacco, grapes, sugar beets, tea, potatoes,
It is also raw materials of high-quality NPK fertilizer. The density is 2.95g/cm3. Its melting point is
400°C, and flashing point is 1689°C. Solubility: 110 g/L at 20°Cwater,insoluble in alcohol, carbon disulfide
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