Nitrogen (N)	13% min
Potassium (K2O)	46% min
Chloride (Cl)	0.2% max
Moisture	0.3% max
Water insoluble	0.1% max
pH (10% solution)	5.0–7.0
Solubility (20 °C)	≈316 g/L
Appearance	White crystalline prills or granules
HS code	2834.21

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Product overview

Agricultural potassium nitrate (KNO3) delivers nitrate nitrogen and chloride-free potassium in a single highly soluble crystal. The 13-46 analysis is the reference grade for greenhouse tomato, pepper and cucumber fertigation during fruiting, when crops need potassium for sugar transport and fruit size without the vegetative push of high-ammonium inputs.

Unlike potassium chloride, KNO3 adds no chloride to drip systems — critical for protected horticulture on saline irrigation water and for chloride-sensitive rootstocks. Low insolubles (0.1% max) protect emitters and fertigation injectors. Agricultural grade suits open-field fertigation, foliar sprays and blending into water-soluble NPK formulations where cost per kg K2O must balance against technical-grade purity.

Supply origins include integrated nitrate complexes in Europe, the Middle East and Central Asia. Export buyers include greenhouse operators in the Gulf and Levant, soluble-fertilizer blenders in South Asia, and distributor networks serving Mediterranean vegetable and berry production.

Loading ports & logistics

Potassium nitrate is classified as an oxidiser (UN 1486) and requires dedicated storage away from combustibles. Agricultural grade moves in moisture-proof packaging to prevent caking during transit through humid ports.

FOB loading at Black Sea chemical terminals and MENA nitrate complexes. Parcel sizes from 300 MT (coaster or containerised big-bag lots) to 3,000 MT on multipurpose or container vessels for bagged cargo.

CFR/CIF deliveries to South Asia (Nhava Sheva, Karachi), East Africa (Mombasa), the Gulf (Jebel Ali, Dammam) and Mediterranean horticulture hubs. Bagged shipments in 25 kg PP woven bags with PE liner or 1,000 kg FIBC suit ports without bulk nitrate handling licences.

Typical lead time 15–30 days from contract to loading window, subject to ADR/IMDG documentation and berth scheduling for oxidiser-class cargo.

Packaging & documentation

25 kg PP woven bags with inner PE liner, palletised and stretch-wrapped; 1,000 kg FIBC big-bags for greenhouse complexes with bulk dissolution tanks; or vessel-hold lots in moisture-barrier packaging. Each consignment ships with a mill certificate of analysis (COA), commercial invoice, packing list, bill of lading and certificate of origin. SDS per GHS and transport declarations for oxidiser-class cargo are included. SGS or Bureau Veritas inspection at loading available for LC-backed or first-time contracts.

FAQ

When should growers switch to potassium nitrate during the crop cycle?

Apply KNO3 during fruit set and ripening when potassium demand peaks and nitrogen should remain moderate. The 13-46 analysis supplies nitrate-N without ammonium that could delay flowering, while chloride-free potassium supports sugar transport and fruit colour without adding salinity to drip systems.

Can agricultural-grade KNO3 be tank-mixed with calcium fertilisers?

Never combine concentrated potassium nitrate and calcium nitrate in the same stock tank — precipitation will block filters and emitters. Use a twin-tank A/B fertigation setup or alternate applications in separate irrigation cycles, flushing lines between inputs.

What packaging and MOQ apply to bulk potassium nitrate export?

Minimum order is 300 MT. Agricultural grade ships in 25 kg bags, 1,000 kg FIBC big-bags or bulk vessel lots from Black Sea and MENA load ports. Each consignment includes a mill COA; SGS or Bureau Veritas inspection at loading is available on request.

Potassium Nitrate Agricultural 13-46 — Chloride-Free N + K for Fertigation

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