Potassium Nitrate 99% Min Crystal – High-Purity Industrial & Hydroponic Grade KNO₃ (25Kg Bag)
Potassium nitrate 99 crystal (chemical formula KNO₃) is an ultra-pure, inorganic salt formulation directly imported from China, compliant with standard specifications requiring Potassium Nitrate purity ≥ 99.0%. Featuring brilliant white prismatic crystals with ultra-low chloride (≤ 0.02%) and moisture (≤ 0.15%), this chemical serves as an indispensable kno3 tech grade compound for chemical strengthening in touch-screen display glass, salt bath metallurgy heat treatments, and optical ceramic glazes. Simultaneously, its crystal-clear solubility (≤ 0.03% insoluble matter) makes it an exceptional soluble kno3 fertilizer for closed-loop commercial hydroponic fertigation. Offering superior chemical stability and reaction kinetics, this high purity potassium nitrate is the premier choice for industrial manufacturers and agricultural enterprises looking to buy kno3 99 bulk china at competitive wholesale pricing.
Technical Specification Standards – Potassium Nitrate Crystal (Standard Specification)
| Technical Parameters & Identification | Guaranteed Technical Limits (Standard Specification) |
|---|---|
| Chemical Name / IUPAC | Potassium Nitrate / Saltpeter / Nitrate of Potash |
| Molecular Formula / Molecular Weight | KNO₃ | M = 101.10 g/mol |
| CAS Registry No. / UN Transportation Code | CAS: 7757-79-1 | UN 1486 (Hazard Class: Class 5.1 Oxidizer, Packing Group III) |
| Technical Quality Standard | Compliant with technical quality standards for Potassium Nitrate ≥ 99% |
| Country of Origin | Made in China |
| Physical Appearance & Form | White crystalline powder / crystal, free-flowing, 100% water-soluble |
| Purity / Assay (KNO₃ Content, dry basis) | ≥ 99.0% Min (High-purity industrial grade) |
| Moisture Content (H₂O) | ≤ 0.15% Max (Ultra-low moisture prevents agglomeration and caking) |
| Chloride Content (as Cl⁻) | ≤ 0.02% Max (Trace-level chloride protects equipment against pitting corrosion) |
| Sulfate Content (as SO₄²⁻) | ≤ 0.01% Max |
| Carbonate Content (as CO₃²⁻) | ≤ 0.01% Max |
| Water-Insoluble Matter | ≤ 0.03% Max (Dissolves into a crystal-clear solution; zero emitter clogging) |
| Packaging Specification | 25 Kg Net Bag (Woven PP bag with sealed inner PE moisture-barrier liner) |
| Shelf Life | 36 months from manufacturing date |
Technological Properties & Key Advantages of KNO₃ 99% Crystal
- Exceptional Technical Purity (≥ 99.0%): Unlike standard granular agricultural fertilizers, technical crystalline potassium nitrate undergoes advanced multi-stage recrystallization to strip away heavy metals and secondary salts. This guarantees uniform reaction kinetics, consistent stoichiometry, and stable thermodynamic performance in high-temperature industrial molten salt baths.
- Total Dissolution Clarity (≤ 0.03% Insolubles): Rapidly dissolves in ambient water to form a completely transparent, residue-free solution. With insolubles kept below 0.03%, it eliminates sediment fouling in automated micro-irrigation lines, commercial hydroponic drip emitters, and high-pressure chemical misting nozzles.
- Ultra-Low Chloride Content (≤ 0.02% Cl⁻): Maintaining chlorides at trace levels is crucial for industrial metallurgy to prevent stress corrosion cracking during heat treatment cycles. For high-tech horticulture, it prevents chloride phytotoxicity and leaf margin necrosis in sensitive greenhouse crops.
- Dry, Free-Flowing Crystal Habit (≤ 0.15% Moisture): Ultra-low moisture content prevents caking and solid block formation in warehouse storage, enabling precise gravimetric dosing and automated pneumatic conveyance.
Multi-Sector Practical Applications in Industry & Advanced Agriculture
Backed by robust oxidizing potential and high solubility, industrial potassium nitrate serves diverse technological processes:
- Commercial Hydroponics & High-Tech Fertigation:
• A primary nitrogen and potassium source in stock A/B concentrated nutrient formulations for closed-loop greenhouse cultivation of rockmelons, strawberries, and hydroponic vine tomatoes.
• Provides 100% plant-available nitrate nitrogen (N-NO₃) that avoids root-zone acidification while delivering concentrated potash to maximize fruit sizing, sugar (°Brix) accumulation, and post-harvest firmness.
• High-purity foliar sprays for floral induction and vegetative flush control in high-value fruit orchards without scorching foliage. - Optical Glass Strengthening & Touch-Screen Displays: Functions as a molten salt bath medium (~400°C) for chemical glass tempering (potassium-sodium ion exchange), producing high surface compressive stress and impact resistance in smartphone glass and aerospace optical lenses.
- Ceramics & High-Performance Glazes: Acts as an efficient fluxing agent that lowers melting temperatures, purges air bubbles, and ensures brilliant surface vitrification in fine porcelain and electronic ceramics.
- Metallurgical Heat Treatment: Utilized in molten salt annealing baths for controlled quenching, tempering, and isothermal hardening of tool steels without oxidizing the metal surface.
- Chemical Synthesis, Pyrotechnics & Safety Matches: Serves as a dependable, highly uniform solid oxidizing agent supplying pure oxygen in safety match heads, artistic display fireworks, and specialty propellants.
Technical Dosing Guidelines, Handling & Storage Protocols
- Hydroponic Stock Preparation Protocol: Slowly add crystals into clean water while agitating continuously until fully dissolved before integrating into final mixing tanks. Avoid blending concentrated dry crystals directly with concentrated calcium compounds to avoid physical displacement.
- Personnel Protective Equipment (PPE): Personnel handling bulk bags must wear dust respirators, safety splash goggles, and industrial rubber gloves to prevent mucous membrane irritation from airborne crystal dust. Prohibit smoking and open flames in chemical dispensing areas.
- Warehouse Storage Protocol (UN 1486 Class 5.1): Store bags on pallets elevated at least 20 cm above floors in a cool, dry, well-ventilated dedicated warehouse below 35°C. Keep away from direct sunlight, steam pipes, and moisture.
- Strict Chemical Segregation: Strictly isolate and never store near combustible organic matter, sulfur, activated charcoal, metal powders, lubricants, strong reducing agents, or concentrated mineral acids (H₂SO₄, HNO₃) to prevent fire hazards. Tightly reseal inner PE liners after partial use.
⚠️ CHEMICAL SAFETY ADVISORY (GHS CLASS 5.1 OXIDIZING SUBSTANCE - UN 1486, PG III):
• Hazard Characteristics: Strong oxidizer. Although non-combustible on its own, it rapidly releases oxygen upon thermal decomposition, accelerating and intensifying combustion of surrounding combustible materials.
• Emergency First Aid: In case of contact with eyes or skin, flush immediately with copious clean water for at least 15 minutes. If crystal dust is inhaled, move the victim to fresh air immediately, keep warm, and seek medical attention with the product MSDS.
• Firefighting Response: In case of surrounding fire involving potassium nitrate, flood with copious amounts of water spray or dry sand; do not use standard dry chemical extinguishers if the fire involves large bulk volumes.
Commercial Supply Policy at THP Chemical
Tan Hung Phu Chemical Co., Ltd. (THP Chemical) is a premier direct importer and wholesale distributor of Potassium Nitrate 99% Min Crystal (25kg Bag China) serving advanced glassmakers, metallurgical facilities, and commercial agricultural operators nationwide:
- Certified compliant with technical standards for Potassium Nitrate ≥ 99%, guaranteeing verified purity and consistent assay lot-to-lot.
- Original packaging: 25 Kg Net heavy-duty woven PP bags with heat-sealed inner PE moisture-barrier liners and fresh 36-month shelf life.
- Complete compliance documentation: Batch-specific factory Certificate of Analysis (COA), 16-section Material Safety Data Sheet (MSDS), and legal VAT invoices provided with every dispatch.
- Substantial ready-stock inventories maintained in Ho Chi Minh City logistics hubs, supporting rapid nationwide delivery from single-pallet orders to full truckload consignments.
Frequently Asked Questions (FAQ)
1. What differentiates 99% crystal KNO₃ from standard agricultural prilled/powder KNO₃?
Standard agricultural potassium nitrate features purities between 95% and 98% with higher permissible levels of insolubles and chlorides. Potassium Nitrate 99% Min Crystal undergoes rigorous centrifugal refining, delivering minimum 99.0% assay, ultra-low chloride (≤ 0.02%), and crystal-clear dissolution (≤ 0.03% insolubles) suitable for high-tech hydroponics, chemical glass strengthening, and precision metallurgy.
2. Why is low chloride critical in display glass strengthening and heat treating?
During chemical glass tempering, sodium ions in the glass are exchanged for larger potassium ions in molten KNO₃. Chlorides or sulfate impurities cause localized surface haze, decrease optical clarity, and cause pitting corrosion on stainless steel salt bath tanks. Ultra-pure KNO₃ ensures flawless optical transmission and extends equipment service life.
3. Will Potassium Nitrate 99% Crystal clog automated hydroponic drip emitters?
No. With water-insoluble matter strictly restricted to ≤ 0.03%, the product dissolves completely into a sparkling clear solution without leaves, sludge, or crystalline fallout, ensuring drip emitters and high-pressure misting nozzles remain clean and unclogged.
4. Does THP Chemical supply batch-specific COAs and VAT invoices for bulk orders?
Yes. THP Chemical provides factory Certificates of Analysis (COA) corresponding to each production batch, 16-section MSDS sheets, and commercial VAT invoices with every wholesale shipment to satisfy corporate QA/QC and regulatory audits.
Industrial glass manufacturers, heat treatment engineers, ceramics facilities, and commercial hydroponic growers seeking to buy KNO3 99 bulk china (Potassium Nitrate 99% Min Crystal – 25kg Bag) or requesting batch COA/MSDS documents, please contact our Technical Sales Department directly:
Tan Hung Phu Chemical Co., Ltd. (THP Chemical)
Hotline / Zalo: 0913 711 647
Email: tanhungphu@thpchemical.com
