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.
Available GradesGranular / Water-Soluble / Field GradePackaging25kg bag / 50kg bag / 1000kg jumbo bagDocumentsCOA / TDS / MSDS
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
Potassium Sulfate (SOP) — granular and water-soluble grades for global agricultural supply.
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
Granular SOPIdeal for field distribution, fertilizer blending, and standard agricultural application. Good storage stability and spreading characteristics.
Water-Soluble SOPLow insoluble content, stable solubility. Designed for drip irrigation, greenhouse fertigation, and controlled nutrient delivery systems.
Powder SOPFine particle size for specialized blending, soluble formulations, and precise dosing applications.
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.
25kg / 50kg bagsStandard export packing for agricultural distributors and retailers.
Jumbo bagsCost-efficient for large plantation groups and blending operations.
OEM packingAvailable for suitable orders after artwork and label confirmation.
Quality Documents Available
COABatch-specific K2O, sulfur, chloride, moisture, and impurity data.
TDSTechnical specifications for formulation and application planning.
MSDSSafety and handling information for transport and warehouse compliance.
PhotosProduct appearance, packaging samples, and container loading references.
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.
