K2SO4
White Powder
| Item | Specs / Unit | Test Method / Ref. |
|---|---|---|
| Potassium as K2O | 50 Min / % | Flam Photometric / ES 2199/2018 |
| Sulfur (S) | 17 Min / % | ICP / In house |
| Chloride (Cl) | 2.5 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 |
| Moisture Content | 0.3 Max / % | Oven / AOAC 950.01 |
| Insoluble Matter | 2.5 Max / % | Gravimetric / Internal |
| Bulk Density | 1.35 -1.6 / gm/cm3 | Loos pour / IFDC S-111 |
| 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 / EPA 6010 B |
| Zinc (Zn) | 50 Max / ppm | ICP / EPA 6010 B |
| 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 |
Potassium sulphate is a high-purity potassium fertilizer containing two essential nutrients: potassium (K) and sulfur (S). Typically available in powder or granular form, it is widely used in agriculture and various industrial processes. The label “SOP / Stand” refers to the standard grade, which is not designed for high solubility like its Sol counterpart but still offers excellent nutrient value for many applications.
One of the key advantages of SOP standard form is its chloride-free nature. Unlike potassium chloride (MOP), it doesn’t harm crops that are sensitive to chlorine, making it especially valuable for high-value agricultural production in Brazil, such as tobacco, grapes, and citrus fruits.
The versatility of potassium sulfate use makes it an essential compound in both farming and industrial sectors. In agriculture, potassium sulphate use is focused on:
In industrial applications, SOP / Stand is involved in:
Its compatibility with alkaline soils makes it particularly useful in Brazilian agriculture and environmental conditions.
When compared to MOP (muriate of potash), SOP offers several advantages, especially for high-value crops. The absence of chloride reduces plant stress, and the added sulfur contributes to essential amino acid formation.
Key K₂SO₄ fertilizer advantages include:
Given its benefits, many farmers consider the slightly higher potassium sulphate price per kg a worthy investment, especially when cultivating premium crops where quality is paramount.
The potassium sulfate price depends on several variables, including:
For buyers in Brazil and abroad, the potassium sulfate price per ton may vary depending on local demand, global supply chains, and shipping routes. Generally, potassium sulphate price reflects the product’s efficiency and compatibility with sensitive agricultural systems.
As a trusted Foscote Group supplier of potassium sulphate in Brazil, we provide consistent product quality, flexible delivery options, and reliable customer support. Our SOP / Stand meets international standards and is available in bulk quantities suited for industrial and agricultural applications.
Why clients choose Foscote Group:
Crops sensitive to chloride, such as tobacco, coffee, citrus, and grapes, gain the most from SOP due to its high potassium content and absence of harmful salts.
Standard SOP is generally not used in hydroponics due to its lower solubility. For such applications, Sol-form SOP is recommended.
SOP is more soil-friendly, especially in regions with alkaline or saline conditions. It avoids chloride buildup, improving soil health over time.
Get in touch
with us!
We source products from reliable manufacturers across the globe and are always looking forward to connecting with new suppliers and customers.
