Potassium Sulphate
[English Name] Potassium Sulphate
Formula of potassium sulfate K2SO4, theoretical potassium (K2O) 54%, generally 50%, also contains about 18% of sulfur, sulfur is essential crop nutrients. Preparation of potassium sulfate potassium ore available, or the conversion of potassium chloride, or salt brine and other resources. Alunite is commonly used to restore thermal solution.
[Molecular Formular ] K2SO4 CAS No. 7778-80-5
[Molecular Weight] 174.26
[Property] Colorless crystals, density 2.662 g / cm 3. Melting point 1069 °C, soluble in water. Moisture absorption is small, uneasy caking, good physical properties, easy application, is a good water-soluble potash.
[Appearance]
1) Industrial Grade Potassium Sulphate: colorless or white hexagonal or orthorhombic crystalline or granular powder. Transformation of the relative density of 2.662 point 588 °C, melting point 1069 °C, boiling point 1689 °C. Soluble in water is not soluble in alcohol, acetone and carbon disulfide. A bitter salty.2)Agricultural Grade Potassium Sulphate: white or colored crystalline powder or granules.
[Specifications]
Item | Standard | Typical Result |
Appearance | White powder or granule | Pass |
K2SO4 | 98%min | 99.0% |
K20 | 50%min | 52.6% |
Moisture | 1.5%max | 0.95% |
CL | 1.5%max | 1.5% |
S | 18%min | 18% |
Free Acid(H2SO4) | 1.5%max | 1.45% |
PH | 3-5 | 4.5 |
Water Soluble | 100% | 100% |
Heavy Metal | 0.01%max | 0.002% |
Calcium | 0.1%max | 0.04% |
Iron(Fe) | 0.1%max | 0.02% |
[Applications]In Agriculture
Suitable for various crops can be used as basal fertilizer, topdressing, types of fertilizer and foliar application. Basal amount of general mu 10-12. 5 kg, types of fertilizer consumption mu 1. 5-2. 5 kg, spray application 0.5% -2% is appropriate. Potassium in soil have been generally, does not leak, but the difference in fertilizer retaining capacity of sand on the need to "Eat smaller meals" measures, usually potatoes, melons and other crops on the application of potassium hi best, Use a wide range of large amount.
[Packing] N.W.20/25/50KG PP woven bag with PE linner bag. Shrink-wrapped with pallet is available.
[Storage & transportation] Stored in dry, cool airiness place, far away from heat, avoid insolation, sign with no moisture and no insolation.
Potassium Sulphate Granular (SOP)