Import Ammonium Sulphate Granular — Buy in wholesale FOB from Supplier in Singapore

Ammonium Sulphate Granular from Topfert Agrochemical Pte Ltd is a nitrogen-sulfur fertilizer with the formula (NH4)2SO4, manufactured to fertilizer grade for professional agricultural use. The granular form features uniform particle size typically in the 2-4mm range, which supports accurate mechanical spreading and blending with other fertiliser components. It contains 21% nitrogen and 24% sulfur, with the sulfur present immediately as plant-available sulfate rather than requiring oxidation. This Singapore-originated product is supplied in bulk bags or loose bulk, targeting large-scale import operations and NPK compound fertilizer manufacturers who require consistent feedstock quality.

The granular structure is formed through agglomeration or compaction of finer crystalline material, with standard hardness sufficient to resist excessive attrition during pneumatic conveying and mechanical handling. Typical bulk density ranges from 0.9 to 1.0 tonnes per cubic metre, though buyers should confirm the exact value for hopper and storage silo design. The manufacturing process for granular ammonium sulfate involves reaction of ammonia with sulfuric acid, followed by crystallisation, drying and size classification. Anti-caking treatment is standard for tropical storage conditions, though the specific agent should be declared for buyers serving organic or speciality crop markets. Moisture content is typically controlled below 0.5% to ensure flowability and prevent lump formation in humid climates.

Primary applications include direct application to sulfur-responsive crops such as oilseeds, legumes and brassicas, and as a sulfur source in bulk blending with urea, DAP and potash to formulate complete NPK fertilizers. The granular form is preferred by plantation operators and contract spreading services for its even distribution pattern. NPK manufacturers value the sulfur contribution for balanced fertiliser formulations. Topfert Agrochemical Pte Ltd positions this material for agricultural importers, fertiliser blenders and government procurement agencies across Southeast Asian and broader export markets. Trade terms, minimum quantities and specific lead times must be confirmed directly with the supplier, as these are not stated in the listing data.

Topfert Agrochemical Pte Ltd is registered at 116 Middle Road, #07-01 ICB Enterprise House, Singapore 188972, operating from a commercial office location in Singapore's central business district. The company holds a harbor trust tier on this platform, with a response rate of 0.00% and zero recorded average response hours, indicating that buyers may experience significant delays in communication and should not rely on rapid quotation turnaround. No manufacturing facility address is provided, suggesting the company may operate as a trader, distributor or marketing office rather than a producer.

The available profile for Topfert Agrochemical Pte Ltd does not disclose establishment year, employee count, annual turnover, manufacturing capacity, or client references. Buyers should conduct direct due diligence to determine whether the company holds inventory in Singapore, operates on back-to-back purchase arrangements, or maintains processing or blending capabilities. The Singapore location offers logistical advantages for Southeast Asian distribution, including port infrastructure and trade finance facilities, but buyers must verify the company's actual operational scope and supply chain relationships before committing to volume contracts.