What is Potassium Sulphate?
Potassium Sulphate (K2SO4), commonly known by its fertiliser industry abbreviation SOP (Sulphate of Potash), provides both potassium and sulphur — two essential plant macronutrients — in a chloride-free form. This makes it the preferred potassium fertiliser source for chloride-sensitive crops and quality-focused agricultural production, distinguishing it from the more commonly used and generally less expensive Muriate of Potash (Potassium Chloride).
Polychem Industries supplies Potassium Sulphate in agricultural grade (SOP) and industrial grade to fertiliser companies, premium crop producers, and various industrial chemical manufacturers across India and internationally. Its chloride-free composition and dual nutrient supply make it particularly valuable for crops where chloride sensitivity, fruit quality, or specific quality parameters (such as tobacco burn quality or fruit sugar content) are economically important considerations.
Available Grades
| Grade | Form | Purity | Standard | Applications |
|---|---|---|---|---|
| Agricultural Grade (SOP) | White crystalline granules/powder | 98%+ (Agricultural / Industrial Grade) | Fertiliser / Agricultural | Chloride-sensitive crops, fertigation, foliar feeding |
| Industrial Grade | White crystalline powder | 98%+ | Industrial | Glass manufacturing, ceramics, chemical processing |
Applications & Uses
Quality-Sensitive Fruit Crops
One of the most valued applications. Potassium Sulphate is preferred for chloride-sensitive fruit crops including grapes, citrus, and various other fruits where chloride exposure can negatively affect fruit quality, sugar content, and overall crop value.
Chloride-Sensitive Vegetable Crops
Used extensively for potatoes, tomatoes, and other vegetable crops known to be sensitive to chloride accumulation, helping avoid quality defects and yield reductions associated with excessive chloride uptake.
Tobacco Production
A critically important application in tobacco cultivation, where chloride content directly affects leaf burn quality and smoking characteristics, making chloride-free SOP the standard potassium source for quality tobacco production.
Fertigation & Foliar Feeding
Used in fertigation and foliar feeding programmes where its relatively good water solubility (though lower than Potassium Nitrate) and chloride-free nature make it suitable for precision nutrient delivery systems.
Glass & Ceramics Manufacturing
Industrial Grade Potassium Sulphate is used in certain glass and ceramic manufacturing processes, contributing potassium oxide content for specific glass and ceramic product formulations.
Chemical Processing
Used as a raw material in various industrial chemical processes requiring a sulphate and potassium source, including the production of other potassium compounds and certain specialty chemical applications.
Technical Specifications
Potassium Sulphate — Key Properties
Why Source Potassium Sulphate from Polychem Industries?
- Agricultural Grade (SOP) and Industrial Grade available
- Chloride-free — ideal for quality-sensitive and chloride-sensitive crops
- Certificate of Analysis available on request
- Dual nutrient supply — potassium and sulphur in one product
- Reliable bulk supply for fertiliser companies and premium crop producers
- Export documentation experience for international shipments
