Industrial & Agricultural Grade Potassium Sulfate SOP Chloride-Free Fertilizer CAS 7778-80-5

Potassium Sulfate (commonly known as Sulphate of Potash, SOP, CAS:7778-80-5,EINECS:231-915-5, HS Code:3104300000, molecular formula K₂SO₄, MW:174.26) is a white crystalline powder or granular solid with extremely low hygroscopicity and no odor. Produced via mature Mannheim process (reaction of sulfuric acid and potassium chloride), natural mineral extraction or neutralization of potassium hydroxide with sulfuric acid, our product is available in two mainstream specifications: agricultural grade (50-52% water-soluble K₂O) and industrial grade (≥99.0% purity). It exhibits excellent water solubility (11.1g/100mL at 20°C) and stable chemical properties, providing both essential potassium and sulfur nutrients for plants and serving as a versatile raw material for various industrial sectors. As the only chloride-free high-efficiency potassium fertilizer, it is globally recognized as the preferred potassium source for chloride-sensitive crops and high-value agricultural production. Our product strictly complies with international standards including GB/T 20406-2017 and ASTM, ensuring consistent quality and reliable performance.

Applications
Agricultural Fertilizer (Core Application)
Ideal potassium source for chloride-sensitive crops including tobacco, grapes, citrus, strawberries, potatoes, tea, cotton and sugar beets, effectively preventing chloride toxicity and improving crop quality
Enhances sugar content in fruits, increases oil content in oilseeds, improves fiber strength in cotton and boosts disease and stress resistance of plants
Suitable for saline-alkali soils as it does not increase soil chloride concentration; can be used as base fertilizer, topdressing or foliar fertilizer
Provides dual nutrients of potassium and sulfur, addressing common sulfur deficiency in modern agricultural soils
Chemical Industry
Basic raw material for manufacturing various potassium compounds such as potassium carbonate, potassium persulfate, potassium alum and potassium silicate
Used in the production of dyes, pigments, explosives and synthetic rubber additives
Glass & Ceramic Industry
Acts as a fining agent to remove bubbles and improve transparency and mechanical strength of glass products
Added to ceramic glazes to enhance glaze adhesion and color stability
Food & Beverage Industry
Approved food additive (E515) used as a stabilizer, thickener, flavor enhancer and potassium supplement in processed foods, beverages and dietary supplements
Pharmaceutical Industry
Excipient in pharmaceutical formulations and raw material for producing laxatives and serum protein separation reagents
Used in biochemical laboratories for protein precipitation and buffer preparation
Other Applications
Additive in electroplating baths for metal surface treatment
Potassium supplement in animal feed to maintain electrolyte balance
Auxiliary agent in textile dyeing and printing processes

Product Advantages
✅ Chloride-free formula: Safe for all chloride-sensitive crops and suitable for long-term application in saline-alkali soils without causing soil salinization
✅ Dual nutrient supply: Provides both potassium (critical for plant growth, yield formation and stress resistance) and sulfur (essential for protein synthesis and enzyme activity)
✅ Excellent physical properties: Extremely low hygroscopicity, no caking, easy to store, transport and apply mechanically
✅ Dual grade options: Agricultural grade for cost-effective crop nutrition and high-purity industrial grade for fine chemical and food applications
✅ Strict quality control: Batch-by-batch testing with complete COA, MSDS and regulatory certification documents for global import customs clearance
✅ Stable supply: Large-scale production capacity with sufficient spot inventory to support bulk orders and long-term framework contracts

Packaging & Storage
Standard packaging: 25kg/50kg PP woven bags with inner PE liners, 1000kg FIBC bulk bags for agricultural grade; 25kg fiber drums with PE liners for industrial grade. Customized packaging is available upon request. Store in a cool, dry and well-ventilated warehouse, keep containers tightly sealed to prevent moisture absorption and caking. Avoid contact with strong acids, alkalis and incompatible substances. Shelf life is 36 months under proper storage conditions.

Safety Information
Classified as non-hazardous goods for international transportation. Generally recognized as safe for agricultural and food use. However, avoid direct contact with eyes and skin; wear dust-proof gloves and goggles during handling of fine powder. In case of eye contact, rinse thoroughly with plenty of clean water for at least 15 minutes. Ingestion of large quantities may cause gastrointestinal discomfort; seek medical attention if symptoms persist. Follow local environmental regulations for disposal of unused product and packaging materials.

1. 1.A 70,000 ㎡ warehouse (20,000 MT capacity) with moisture-proof and temperature-controlled systems, enabling efficient fulfillment of large-volume orders.
2. 2.Free samples (Ship within 3-7 days) to let you test products at zero trial cost.
3. 3.Transparent lead time for hazardous chemicals: 45–60 days, with clear delivery schedules.
4. 4.Certified with a Hazardous Chemical Business License and ISO certification, ensuring smooth customs clearance.
5. 5.6 packaging options with customizable logos to minimize product loss during transportation.
6. 6.Over 400 chemical SKUs available for one-stop procurement, helping you reduce sourcing costs.