Potassium sulfate (SOP / Sol)

Parameters

Application

Packing

Potassium sulfate (SOP / Sol) specification
Item	Specs / Unit	Test Method / Ref.
Potassium as K2O	50 Min / %	Flam Photometric / ES 2199/2018
Sulfur (S)	18 Min / %	ICP / In house
Chloride (Cl)	1 Max / %	Volumetric / ES2199/2018 Volhard test method
pH (1 g/ 100 ml H2O)	2.45-3	pH meter / Internal
Acidity as H2SO4	5.5 Max	Volumetric / Acid-Base titration
Solubility in H2O	110 Min / g/L	Solubility / AOAC950.01
Moisture Content	0.15 Max / %	Oven / Internal
Insoluble Matter	0.1 Max / %	Gravimetric / IFDC S-111
Bulk Density	1.35-1.6 / gm./cm3	Loose pour / IFDC S-115
Arsenic (As)	5 Max / ppm	ICP / AOAC 2006.03
Cadmium (Cd)	3 Max / ppm	ICP / AOAC 2006.03
Lead (Pb)	5 Max / ppm	ICP / AOAC 2006.03
Hexavalent Chromium (Cr)	2 Max / ppm	ICP / EPA 8023
Total (Cr)	10 Max / ppm	ICP / AOAC 2006.03
Mercury (Hg)	0.2 Max / ppm	ICP / EPA 6010 B
Nickel (Ni)	50 Max / ppm	ICP / AOAC 2006.03
Biuret	12 Max / g/kg	Spectrophotometer / In house
Perchlorate	10 Max / ppm	Spectrophotometer / In house
Cupper (Cu)	50 Max / ppm	ICP / AOAC 2006.03
Zinc (Zn)	50 Max / ppm	ICP / AOAC 2006.03

Item	Specs / Unit	Ref.
Particle Size > 2.0 mm	1 Max / %	dry Sieve
Particle Size > 1.0 mm	5 Max / %	dry Sieve
Particle Size > 0.5 mm	30 Max / %	dry Sieve
Particle Size > 0.1 mm	70 Min / %	dry Sieve

The above quality parameters and values as for reference only. Please contact us for the most recent technical Data Sheet (TDS) related to this product.

What is Soluble Potassium Sulfate?

Potassium sulphate is a highly efficient, chlorine-free potassium fertilizer with widespread application in agricultural and industrial fields. It is chemically represented as K₂SO₄ and occurs in both granular and soluble potassium sulfate. It is appropriate for crops that are chloride-sensitive relative to potassium chloride and therefore is the preference for high-value agricultural crops. Apart from its use in agriculture, sulphate de potassium is also used in several industrial processes because it is chemically inert and very soluble.In Brazil, where agriculture plays a crucial role in the economy, potassium sulphate is widely utilized to enhance soil fertility and improve crop yields, particularly in regions with high-value fruit and vegetable production.

Major uses of Potassium Sulfate

Due to its chemical nature, the use of potassium sulfate is widespread across industries:

Agriculture – SOP is applied as a fertilizer on crops like tobacco, grapes, potatoes, and citrus fruits that are sensitive to chloride. It helps in the growth of plants by providing potassium and sulfur, which play a vital role in photosynthesis and enzyme activation.
Industrial Applications – Its industrial applications involve the manufacturing of glass, drugs, and chemical synthesis. Its property to be used as a stabilizer and reactant is utilized in these applications.
Water Treatment – Application of potassium sulfate also finds its way into water treatment activities, where it is utilized in mineral balancing and enhancing the quality of water in municipal and industrial environments.

Soluble Potassium Sulfate price: what influences the price?

Several factors influence the potassium sulphate cost, making its price fluctuate in global markets:

Product Variants – Potassium magnesium sulphate price is based on the levels of purity, granulation, and solubility. Soluble sulphate of potash with high purity is more expensive because of extra purification processes.
Availability of Raw Materials – SOP production depends on material like potassium-containing minerals and synthetic operations. Limited availability of raw materials can increase the cost of production.
Demand and Logistics – Seasonal demand, transportation expenses, and market conditions have a strong influence on the price of sulfate of potash. As an internationally traded commodity, price fluctuation is normal due to local supply chains and agricultural cycles.

Where to purchase Soluble Potassium Sulfate?

While choosing a sop potassium sulphate supplier, quality certification, product consistency, and supplier reliability are considerations. Good suppliers offer clear product specifications, clear pricing, and assured delivery.

Foscote Group is a trusted soluble potassium sulfate supplier, offering quality soluble sop price solutions to industrial and agricultural clients worldwide, as well as in Brazil. Having a partnership with a trusted supplier means having access to high-quality soluble sulphate of potash, which translates to efficiency and reliability for your company.