Potassium Fertilizer
Potassium Sulfate (SOP) Fertilizer Supplier for Chloride-Sensitive Crops
We supply potassium sulfate (sulfate of potash / SOP) for fruits, vegetables, tobacco, tea, grapes, citrus and drip irrigation systems. Available in granular and water-soluble grades with 25kg bags, jumbo bags, COA, TDS and MSDS for agricultural B2B buyers worldwide.
Potassium Sulfate (SOP) Specifications
Potassium sulfate (SOP) is the preferred potassium source for chloride-sensitive, quality-focused agriculture. It delivers both potassium (~50% K2O) and sulfur (~18% S) in one application, making it especially valuable for fruits, vegetables, tobacco, tea, and fertigation systems where nutrient precision directly affects crop market value.
| Product Name | Potassium Sulfate / Sulfate of Potash (SOP) |
| CAS Number | 7778-80-5 |
| K2O Content | ~50% |
| Sulfur Content | ~18% S |
| Chloride Content | <1% |
| Available Forms | Granular / Powder / Water-Soluble |
| Packaging | 25kg bag / 50kg bag / 1000kg jumbo bag / pallet |
| Origin | China |
| Documents | COA / TDS / MSDS available |
SOP vs MOP: Quick Comparison
| Property | Potassium Sulfate (SOP) | Muriate of Potash (MOP) |
|---|---|---|
| K2O Content | ~50% | ~60% |
| Chloride | <1% | ~47% |
| Sulfur | ~18% S | None |
| Best For | Chloride-sensitive crops, fruits, vegetables, tobacco, tea | General field crops, pasture, chloride-tolerant crops |
| Price Position | Premium | Economy |
SOP is not marketed as the cheapest potassium source. It is marketed as the right source for chloride-sensitive and quality-focused crop programs. Buyers balance input cost against crop response, agronomic suitability, and market value.
Applications of Potassium Sulfate
- Citrus orchards
- Grape production
- Berry cultivation
- Tomato and pepper growing
- Melon and watermelon programs
- Tobacco farming
- Tea plantations
- Greenhouse crops
- Drip irrigation and fertigation
- Horticultural production
Product Forms and Grade Selection
Packaging and Bulk Supply
All packaging is designed for export durability. Standard options: 25kg woven bags, 50kg bags, 1000kg jumbo bags, and palletized packing. Container loading: approximately 20-27MT per 20-foot container depending on packaging format. OEM labels available for qualified orders after artwork confirmation.
Quality Documents Available
Related Resources
FAQ About Potassium Sulfate (SOP)
What is potassium sulfate (SOP) used for?
Potassium sulfate is primarily used as a chloride-free potassium fertilizer for chloride-sensitive crops such as fruits, vegetables, tobacco, tea, grapes, citrus, potatoes, and greenhouse crops. It supplies both potassium (K) and sulfur (S) in one application.
What is the difference between SOP and MOP?
SOP (sulfate of potash) contains ~50% K2O and less than 1% chloride with ~18% sulfur. MOP (muriate of potash) contains ~60% K2O but ~47% chloride. SOP is preferred for chloride-sensitive and quality-focused crops despite a higher price per unit of potassium.
Do you supply water-soluble grade potassium sulfate?
Yes. We supply both granular field-grade SOP and water-soluble SOP grades suitable for drip irrigation, fertigation, and greenhouse nutrient delivery systems. Please specify your solubility requirement.
What packaging is available for SOP?
Standard packaging includes 25kg bags, 50kg bags, and 1000kg jumbo bags. Pallet packing and OEM labels can be discussed. Export-quality packaging ensures product integrity during long-distance shipping.
Can you provide COA, TDS and MSDS for SOP?
Yes. COA, TDS and MSDS are available for all grades. Documentation supports customs clearance and end-user quality verification.
What is the MOQ for bulk SOP orders?
MOQ depends on grade and packaging format. Trial orders are often supported. Full container loads (20-27MT per 20-foot container depending on packaging) offer the most economical freight cost.
Looking for a reliable Potassium Sulfate (SOP) supplier?
Contact us today for grade recommendation, COA, TDS, packing details and bulk quotation.
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