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Potassium Nitrate / Nitrate of Potash (NOP)

Chemical Name Potassium Nitrate / Nitrate of Potash (NOP)
Chemical Formula: KNO₃ (N 13.5% – K₂O 46%)
CAS No.: 7757-79-1
EINECS No. 231-818-8
HS Code: 2834.21 (Potassium nitrates)
Appearance White, free-flowing crystalline granules or prills
Grade Agricultural Grade / Technical Grade
Solubility Highly soluble in water (~316g/L @20°C)
Key Features Chloride-free, fully water-soluble, dual nutrient source
Packaging: 25 kg / 50 kg bags or 1000 kg jumbo bags
Certificate: ISO, SGS, COA, MSDS available

Potassium Nitrate (KNO₃) Description


 

Raison Chemical——Potassium Nitrate (KNO₃), commonly referred to as Nitrate of Potash (NOP), is a fully water-soluble, chloride-free NK source (approx. 13–14% N as 100% nitrate-N / 46% K₂O). Because nitrogen is supplied in nitrate form, it is immediately available for plant uptake without relying on soil microbial conversion, making it especially suitable for high-value crops, fertigation/hydroponics, and periods of active fruiting / stress recovery.

 

Technical Specifications Table


 

Parameter Unit Agri / Fertigation Grade (Typical) Technical / Industrial Grade (Typical) Test / Standard (common)
Appearance White crystalline prills / fine crystals White crystalline / granular Visual
Assay (KNO3) % ≥ 99.0 99.0 – 99.5+ Titration / Gravimetric
Nitrogen (N) – nitrate form % ≥ 13.5 13.5 Spectro / Titration
Potassium (K2O) % ≥ 46.0 46.0 – 46.3 Calculation / Flame photometer / ICP
Chloride (as Cl) % ≤ 0.03 – 0.20 (grade dependent) ≤0.01 – 0.03 Mohr method
Moisture (H2O) % ≤ 0.10 – 0.30 ≤0.10 – 0.20 Loss on drying
Water Insolubles % ≤ 0.02 – 0.05 ≤0.01 – 0.03 Filtration residue
Sulfate (as SO42-) % ≤ – / ≤0.01–0.02 (optional) ≤0.005 – 0.01 Gravimetric
Iron (Fe) % ≤ ≤0.003 – 0.005 AAS / ICP
pH (5% soln, 25°C) 5.5 – 8.0 5.5 – 7.5 pH meter
Bulk density g/cm3 1.0 – 1.2 (prill dependent) ~1.0 – 1.2 ASTM / ISO

 

 

Key Benefits of Potassium Nitrate / Nitrate of Potash (NOP)


 

  1. Immediate Nutrient Availability
    Supplies 100% nitrate-nitrogen (NO₃⁻) for instant plant uptake without soil conversion, eliminating ammonia toxicity risks and delivering rapid response during critical growth stages.
  2. Chloride-Free Premium Formula
    Zero chloride content prevents leaf burn and salt stress, making it ideal for chloride-sensitive high-value crops including tobacco, potatoes, grapes, strawberries, and citrus.
  3. Optimized N:K Ratio (1:3.4)
    Perfect 13.5% N + 46% K₂O balance promotes fruit development, sugar accumulation, color enhancement, and improved shelf life without excessive vegetative growth.
  4. Superior Fertigation Performance
    Exceptional solubility (>316g/L at 20°C) ensures complete dissolution with zero residues, preventing emitter clogging in drip irrigation systems and hydroponic setups.
  5. Enhanced Stress Resistance
    Strengthens cell walls and osmotic regulation, improving crop resilience against drought, extreme temperatures, and disease pressure while boosting overall plant vigor.
  6. Export-Compliant Quality Assurance
    Consistent crystalline structure with low impurities meets international fertilizer standards, supported by full documentation (COA, MSDS, SGS) for seamless global shipping.

 

At-a-Glance Specs (For Quick Reference)


 

Physical Properties

Property Typical Value Notes
Melting Point 334 °C Decomposes upon further heating
Boiling Point ~400 °C Decomposition starts around this temperature
Density 2.11 g/cm3 (at 20°C) Relative to water
Solubility in Water Highly soluble Increases significantly with temperature (e.g., 31.6g/100g water at 20°C)
Solubility in Alcohol Insoluble Does not dissolve in anhydrous ethanol or ether
Hygroscopicity Very low Excellent anti-caking properties, remains free-flowing

 

Chemical Properties

  • Oxidizing Agent: Potassium Nitrate is a strong oxidizer. It readily releases oxygen when heated, which supports the combustion of other materials.
  • Thermal Decomposition: When heated above 334°C, it decomposes to produce potassium nitrite and oxygen gas. Further heating leads to the formation of potassium oxide and nitrogen oxides.
  • Reaction: 2KNO3 → 2KNO2 + O2
  • Stability: It is stable at room temperature but should be kept away from heat sources, open flames, and reducing agents.
  • Compatibility: Reacts violently with combustible materials (such as sulfur, carbon, and organic matter), strong acids, and active metals, posing a significant fire or explosion hazard.

Packing&Shipping


 
Packaging Type Weight Options
Woven PP Bags 9.9 kg, 50 kg
Jumbo Bags 1000 kg (1 MT)
Bulk Delivery Available upon request

A:​ We focus on two core categories:

  • Agricultural fertilizers:​ Urea (46% N, prilled/granular), NPK compound fertilizers, Potassium Nitrate (technical/agri grade) and related potash/blended fertilizers.

  • Industrial & hazardous chemicals:​ organic peroxides/initiators (MEKP, BPO, etc.), corrosive chemicals (e.g. Caustic Soda flakes/liquid, acids), and associated inorganic salts/industrial materials.

    We position ourselves as an integrated supplier​ covering sourcing, quality check, repacking/labeling, warehousing coordination and export documentation.

Q:​ How do you guarantee compliance and smooth customs clearance?

A:​ Compliance is non-negotiable in our segment. For each shipment we can prepare the standard export document set required by most importers:

  • COA / MSDS(SDS)​ per batch

  • Certificate of Origin

  • Commercial Invoice / Packing List

  • When needed: SGS/third-party inspection, quantity & quality reports, and additional certificates (depending on destination & product)

    For hazardous goods (DG), we work within the required DG framework: proper UN marking, DG declarations, and DG-class aware logistics booking from Qingdao/Shanghai/Tianjin.

A:​ Yes—KNO₃ is part of our handled range, but we treat it as what it is: a 5.1 oxidizer​ and a controlled/regulated item in many jurisdictions. We only offer it when the inquiry matches a lawful end-use and the buyer can work with proper DG procedures (correct documentation, compliant packaging, and DG-capable carriers). If you are unsure about your local import permit/license path, tell us your country & HS code requirement and we’ll align the paperwork accordingly.

A:​ Yes. Common options include 25 kg / 50 kg PP woven + PE inner, and FIBC/Jumbo bags (500/1000 kg). We can arrange OEM bag printing​ (your logo, multi-language labels, lot/batch info). For hazardous items, any “custom pack” must still respect DG/UN packaging rules—so we’ll confirm which artwork/labels are feasible before production.

A:​ After deposit & artwork confirmation (if any), typical windows are roughly:

  • In-stock / spot arrangements: 7–15 days​ to readiness

  • Made-to-order / special specs / OEM bags: 15–30 days​ (depends on spec, inspection, DG queue)

    Main export gateways: Qingdao / Shanghai / Tianjin, chosen by cargo type, container equipment and routing cost.

A:​ For most lines we quote against 1×20ft FCL​ as the practical MOQ (to keep unit cost & logistics sane). Smaller LCL lots are possible case-by-case—especially for DG where carriers/permits drive feasibility.

Payment norm: T/T (30% deposit + 70% against copy docs / BL); other terms discussed per client profile & inspected track record.

A:​ Yes. We can arrange small representative samples​ (often courier / local express) for your lab check. For hazardous items, sample channel must follow DG courier rules—sometimes that means higher cost or an alternative arrangement. Sample cost & freight are usually on buyer’s account; refundable against first container in many cases.

Leave Your Message

Still not sure which spec/pack fits your market? Contact Raison Chemical​ with your destination country, HS code and monthly volume—we’ll propose a compliant plan and lead time.

 

Why Choose Raison®  Chemical

 

· Licensed DG Exports​ – Full permits, zero compliance risks.

· Integrated Supply​ – Agro & industrial chemicals, one source.

· Certified Quality​ – SGS/ISO assured with full COA/SDS.

· Qingdao Logistics​ – Faster shipping, lower freight costs.

· Flexible Packaging​ – OEM branding tailored to your market.

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