Description

Ammonium Sulfate: Reliable Nitrogen and Sulfur Fertilizer from Iran

Ammonium sulfate is one of the most traditional and reliable inorganic fertilizers in the world, widely used for enriching soil with nitrogen and sulfur—two essential nutrients for plant growth and yield. It is a white crystalline salt with the chemical formula (NH₄)₂SO₄, valued both in agriculture and in various industrial processes. Its combination of approximately 21% nitrogen and 24% sulfur makes it a balanced fertilizer for improving crop productivity and maintaining soil health.

At Call2Supply, we supply and export Iranian-origin ammonium sulfate directly from reputable chemical producers and refineries across the country. Our sourcing comes primarily from private plants that operate under strict quality control, producing both caprolactam-based and synthetic grades. We offer consistent purity, low moisture content, and a steady supply capacity to serve global clients in Asia, Africa, Europe, and CIS markets.

Key Benefits and Characteristics

Ammonium sulfate is known for its high solubility, non-hygroscopic nature, and uniform crystalline structure. It dissolves quickly in water, releasing nitrogen in ammoniacal form and sulfur in sulfate form—both of which are immediately available for plant uptake. The nitrogen supports leaf and stem growth, while the sulfur aids in chlorophyll formation and protein synthesis.

Because of its slightly acidic effect, ammonium sulfate is particularly suitable for alkaline and neutral soils, helping to improve soil pH and nutrient absorption. Unlike urea, it causes minimal volatilization loss, ensuring that most of the applied nitrogen remains available to the plants. Farmers in different regions prefer ammonium sulfate for its predictable results and compatibility with other fertilizers.

Agricultural Applications

Ammonium sulfate plays a vital role in modern agriculture, serving as both a direct fertilizer and a raw material for NPK blends. It is used for rice, wheat, maize, sugarcane, cotton, vegetables, fruits, and tea plantations. In areas with sulfur-deficient soils, it significantly improves crop yield and quality.

For dryland and irrigated farming systems, ammonium sulfate provides balanced nutrition throughout the growing season. It can be applied through broadcasting, side dressing, or fertigation. Its consistent particle size ensures uniform distribution when spread mechanically or manually.

It can also be mixed safely with potassium chloride, ammonium phosphate, and urea, forming custom nutrient blends for specific crops. Because of its compatibility and stable chemical behavior, it remains a core component in the global fertilizer industry, preferred by producers and distributors alike.

Industrial and Non-Agricultural Uses

Beyond its agricultural role, ammonium sulfate is an important compound in multiple industrial sectors. In the textile industry, it is used for pH adjustment and as a mordant during dyeing and tanning. In water treatment, it acts as a neutralizing agent and coagulant aid for wastewater purification.

It also finds applications in the pharmaceutical and biotechnology industries, particularly in protein purification and precipitation processes. In chemical manufacturing, ammonium sulfate serves as a raw material or by-product in the caprolactam process, which is part of nylon production. These diverse applications demonstrate its versatility and chemical stability, making it more than just a simple fertilizer.

Grades, Packaging, and Delivery

Call2Supply provides two main categories of ammonium sulfate: fertilizer grade and industrial grade.
The fertilizer grade is available in both crystalline and granular forms, featuring high purity and uniform size for efficient spreading. The industrial grade, with extremely low insoluble content, is used in chemical and water treatment applications.

We offer flexible packaging options including 50 kg woven PP bags, jumbo bags (1 metric ton), or bulk shipments in containers. All shipments are carefully handled to prevent caking or contamination during transport.

Delivery terms can be arranged as FOB Iranian ports, CFR, or CIF worldwide, depending on buyer preference. Ports such as Bandar Abbas, Imam Khomeini Port, and Bandar Anzali serve as our main export hubs. Optional third-party inspection by organizations like SGS or Bureau Veritas is available before loading.

Quality Assurance

Each batch of ammonium sulfate is tested in certified laboratories for nitrogen and sulfur content, moisture level, solubility, and appearance. A Certificate of Analysis (COA) and Material Test Report (MTR) are provided with every shipment. Buyers can request independent testing to verify compliance with their technical requirements.

At Call2Supply, maintaining consistent quality and transparency is a top priority. We ensure that all products conform to international export standards, enabling reliable performance in both agricultural and industrial applications.

Why Choose Call2Supply

• Direct sourcing from leading Iranian chemical producers

• Stable quality and consistent composition

• Flexible packaging and logistics for different market needs

• Competitive export pricing through optimized supply chains

• Experience in serving global fertilizer distributors and industrial clients

• Commitment to punctual delivery and transparent documentation