SOP Potassium Sulphate is a crystalline, white, odorless salt with the chemical formula K2SO4. It is commonly known as potash of sulfur or sulfate of potash. It is a premium source of potassium (K) and sulfur (S) essential for plant growth and is widely used as a fertilizer in agriculture and horticulture. SOP Potassium Sulphate contains a high concentration of potassium (K), one of the three major macronutrients required by plants for healthy growth and development. It has a guaranteed minimum of 50% K2O content, making it an excellent source of potassium for crops.