potassium nitrate

Introduction to Potassium Nitrate: Properties, Production, and Global Relevance

Potassium nitrate (KNO₃), also known as saltpeter or nitre, is a naturally occurring mineral source of nitrogen and potassium. It appears as a white crystalline powder or colorless crystals, highly soluble in water. Its chemical structure combines two essential plant macronutrients—nitrogen (13.8% N) and potassium (46.5% K₂O)—making it a premium, chlorine-free fertilizer. Beyond agriculture, potassium nitrate is a critical raw material in the production of gunpowder, fireworks, matches, glass, ceramics, food preservatives (E252), and even toothpaste for sensitive teeth. The global market for potassium nitrate is driven by the increasing demand for high-efficiency fertilizers in precision agriculture and the expanding industrial applications in emerging economies. The compound is manufactured through two primary routes: the double decomposition reaction of sodium nitrate and potassium chloride, and the more modern, energy-efficient ion-exchange process.

Top 10 Global Potassium Nitrate Suppliers and Manufacturers (2025 Ranking)

The global potassium nitrate market is consolidated among a few key players, with production concentrated in Chile, Israel, China, and the United States. The following ranking is based on production capacity, revenue, and market share as of early 2025.

Rank	Company Name	Country	Annual Production Capacity (Metric Tons)	Key Brand/Product
1	SQM (Sociedad Química y Minera)	Chile	1,500,000	Ultrasol® K-Nite
2	Haifa Group	Israel	800,000	Haifa Multi-K™
3	Kemira Oyj	Finland	350,000	Kemira KNO₃
4	Yara International	Norway	300,000	YaraLiva™ Tropicote
5	Migao Corporation	China	280,000	Migao KNO₃
6	Wendel Group (Wentong)	China	250,000	Wentong KNO₃
7	Borealis AG	Austria	200,000	Borealis KNO₃
8	K+S Aktiengesellschaft	Germany	180,000	K+S KNO₃
9	Mitsubishi Chemical Corporation	Japan	120,000	MCC KNO₃
10	GFS Chemicals	USA	60,000	GFS KNO₃ (Technical Grade)

Top 10 Potassium Nitrate Suppliers and Factories in China

China is the world’s second-largest producer of potassium nitrate, with a strong concentration of factories in Shandong, Shanxi, and Xinjiang provinces. The following list represents the leading Chinese manufacturers based on output and export volume.

Rank	Company Name	Location (Province)	Annual Capacity (Metric Tons)	Main Grade
1	Migao Corporation (Mianchi Migao)	Shanxi	280,000	Agricultural & Industrial
2	Shanxi Wendel Group (Wentong)	Shanxi	250,000	Industrial (Gunpowder)
3	Shandong Lianmeng Chemical Group	Shandong	200,000	Agricultural (Water Soluble)
4	Yunnan Yuntianhua Co., Ltd.	Yunnan	150,000	Agricultural
5	Shanxi Jiaocheng Huaxing Chemical	Shanxi	120,000	Industrial (Pyrotechnics)
6	Shandong Star Grace Mining Co., Ltd.	Shandong	100,000	Agricultural & Technical
7	Hebei Monband Water Soluble Fertilizer Co., Ltd.	Hebei	80,000	Agricultural (Foliar)
8	Shanxi Kunlun Chemical Co., Ltd.	Shanxi	70,000	Industrial (Glass & Ceramics)
9	Nantong Jianghai Chemical Co., Ltd.	Jiangsu	50,000	Technical Grade
10	Hubei Lianxing Chemical Co., Ltd.	Hubei	40,000	Agricultural

Global Potassium Nitrate Supplier Directory with Contact Information

Below is a curated list of reputable global suppliers and their verified contact emails. Please note that email addresses are provided for initial quotation requests and are subject to change. Always verify with the company’s official website.

Company Name	Headquarters	Main Product Grade	Contact Email (Sales/Export)	Website
SQM	Santiago, Chile	Agricultural, Industrial	exports@sqm.com	www.sqm.com
Haifa Group	Haifa, Israel	Agricultural (Multi-K)	info@haifa-group.com	www.haifa-group.com
Kemira Oyj	Helsinki, Finland	Industrial, Water Treatment	sales.industrial@kemira.com	www.kemira.com
Yara International	Oslo, Norway	Agricultural (YaraLiva)	fertilizer.support@yara.com	www.yara.com
Migao Corporation	Shanxi, China	Agricultural, Technical	export@migaochem.com	www.migaochem.com
Wendel Group (Wentong)	Shanxi, China	Industrial (Pyrotechnics)	sales@wentongchem.com	www.wentongchem.com
Borealis AG	Vienna, Austria	Agricultural, Industrial	fertilizer@borealisgroup.com	www.borealisgroup.com
K+S Aktiengesellschaft	Kassel, Germany	Agricultural	info@k-plus-s.com	www.k-plus-s.com
Mitsubishi Chemical	Tokyo, Japan	Industrial, Electronic	chemicals@m-chem.com	www.m-chemical.co.jp
GFS Chemicals	Columbus, USA	Technical, ACS Reagent	sales@gfschemicals.com	www.gfschemicals.com

Key Factors to Consider When Selecting a Chinese Potassium Nitrate Manufacturer

Choosing the right manufacturer in China requires a thorough evaluation beyond just price. The following criteria are critical for ensuring product quality, supply chain reliability, and regulatory compliance.

1. Production Process and Purity

Confirm whether the manufacturer uses the double decomposition method or the ion-exchange process. The ion-exchange process typically yields a higher purity (99.5% KNO₃ min) with lower chloride content, which is essential for high-value agricultural and industrial applications.

2. Certification and Compliance

Verify that the factory holds ISO 9001 (Quality Management), ISO 14001 (Environmental Management), and OHSAS 18001 (Occupational Health). For export, ensure they have REACH (EU) or EPA (USA) registration if you are shipping to those regions.

3. Particle Size and Physical Form

Potassium nitrate is available in crystalline, granular, and prilled forms. Agricultural users often require granular for soil application, while industrial users need fine crystalline powder for pyrotechnics or glass melting.

4. Packaging Capabilities

Standard packaging includes 25kg, 50kg, 1000kg jumbo bags, or customized bags. Check if the manufacturer offers moisture-proof liners, which are critical for maintaining product quality during long sea shipments.

5. Lead Time and Logistics

Chinese factories in Shanxi or Shandong generally have good access to the ports of Tianjin and Qingdao. Inquire about typical lead times: 15-20 days for FOB orders and 25-35 days for CIF delivery.

6. Third-Party Testing

Request a recent Certificate of Analysis (COA) from an independent lab such as SGS or Bureau Veritas. This verifies the K₂O and N content, as well as the absence of heavy metals.

Why Buy from Chinese Manufacturers? Key Advantages

Sourcing potassium nitrate from China offers several strategic benefits that have made the country a preferred supplier for buyers in Asia, Africa, and the Americas.

• Cost-Effectiveness: Chinese manufacturers benefit from lower raw material costs (domestic potassium chloride and sodium nitrate) and lower labor costs, resulting in FOB prices that are often 15-25% lower than those of European or Chilean producers.
• Large Production Capacity: With several factories exceeding 200,000 metric tons per year, Chinese suppliers can handle large-volume orders (500 MT to 10,000 MT) without supply disruption.
• Flexible Customization: Chinese factories are more willing to produce custom particle sizes, special packaging, or private label products for international buyers.
• Established Export Infrastructure: Major ports like Tianjin, Qingdao, and Shanghai have dedicated chemical terminals and container yards, ensuring efficient loading and shipping.
• Dual-Grade Production: Many Chinese manufacturers produce both agricultural and industrial grades in the same facility, allowing for mixed container loads and reduced logistics costs.

How to Find a Professional Potassium Nitrate Manufacturer in China

Finding a reliable Chinese manufacturer requires a systematic approach. Here is a step-by-step guide.

1. Use Verified B2B Platforms

Start your search on platforms like Alibaba (Gold Supplier), Made-in-China, and Global Sources. Filter by “Verified Manufacturer” and look for companies with a factory audit report from TÜV or SGS.

2. Attend Industry Trade Shows

Visit the China International Fertilizer Show (CIFE) in Shanghai or the China Chemical Industry Expo in Beijing. These events allow you to meet factory owners directly and inspect product samples.

3. Request a Factory Audit

Hire a third-party inspection company like SGS, Bureau Veritas, or AsiaInspection to conduct a pre-shipment audit. The audit should cover production capacity, quality control labs, and warehouse conditions.

4. Check Export History

Use customs data platforms (e.g., ImportGenius, Panjiva) to verify the manufacturer’s export history. A consistent export record to countries like India, Brazil, the USA, or Australia indicates reliability.

5. Order Small Samples First

Request a 5kg or 25kg sample for laboratory testing. Test for purity (KNO₃ content), moisture content, chloride content, and particle size distribution before placing a large order.

Applications and Solutions: Where Potassium Nitrate Excels

Potassium nitrate is a versatile chemical with distinct solutions for different industries.

Agriculture: High-Efficiency Fertilization

In fertigation and foliar spray systems, potassium nitrate provides a completely water-soluble source of N and K without chlorine. It is ideal for high-value crops like tomatoes, grapes, citrus, tobacco, and potatoes. Solution: Use 5-10 kg/ha per application for drip irrigation to improve fruit size, color, and shelf life.

Pyrotechnics and Explosives: Controlled Combustion

As an oxidizing agent in gunpowder and fireworks, potassium nitrate provides a stable and predictable burn rate. Solution: Use industrial-grade KNO₃ with a purity of 99.5% and a particle size of 100-200 mesh for uniform ignition.

Glass and Ceramics: Melting Agent

In the glass industry, potassium nitrate is used to improve the clarity and strength of glass, especially for optical and specialty glass. Solution: Add 2-5% KNO₃ to the batch to reduce melting temperature and remove bubbles.

Food Preservation: Curing Agent

Potassium nitrate (E252) is used in the curing of meats to preserve color and inhibit bacterial growth. Solution: Use food-grade KNO₃ (99.9% purity) at a concentration of 0.1-0.2% of the meat weight.

Dental Care: Sensitivity Relief

In toothpaste, potassium nitrate acts as a desensitizing agent by blocking nerve signals in teeth. Solution: Use pharmaceutical-grade KNO₃ at 5% concentration in the formulation.

Frequently Asked Questions (10 Common Queries)

1. What is the difference between potassium nitrate and potassium chloride? Potassium nitrate contains both nitrogen and potassium, while potassium chloride only provides potassium. KNO₃ is chlorine-free, making it safer for sensitive crops like tobacco and strawberries.
2. Is potassium nitrate water soluble? Yes, potassium nitrate has a solubility of 316 g/L at 20°C, making it one of the most soluble potassium fertilizers.
3. Can potassium nitrate be used in organic farming? Generally no, as synthetic potassium nitrate is not permitted under most organic certification standards (e.g., USDA Organic, EU Organic).
4. What is the shelf life of potassium nitrate? When stored in a dry, cool place away from organic materials, potassium nitrate has an indefinite shelf life.
5. Is potassium nitrate hazardous? Yes, it is an oxidizer (UN 1486). It can accelerate fires and should be stored away from combustible materials.
6. What is the HS code for potassium nitrate? The HS code is 2834.21.00 for most countries.
7. What is the typical price range for potassium nitrate in 2025? FOB China prices range from USD 600 to 850 per metric ton for agricultural grade, and USD 800 to 1,100 for industrial grade.
8. How is potassium nitrate transported? It is shipped in 25kg PP woven bags with PE liners, or in 1-ton jumbo bags, usually containerized on pallets.
9. What is the minimum order quantity (MOQ) from Chinese factories? Most factories require an MOQ of 20 metric tons (one 20-foot container).
10. Can potassium nitrate be mixed with other fertilizers? Yes, it is compatible with most water-soluble fertilizers, but avoid mixing with concentrated sulfuric acid or organic materials.

Procurement Tips for Potassium Nitrate Buyers

Successful procurement of potassium nitrate requires attention to contract terms, quality specifications, and logistics. Here are critical points to include in your purchase order.

• Specify the Grade: Clearly state whether you require Agricultural Grade (13-0-46), Industrial Grade (99.5% min), or Technical Grade (99.8% min).
• Define Particle Size: For granular products, specify 2-4 mm; for crystalline, specify 0.1-0.5 mm. Use a sieve analysis certificate.
• Include a Penalty Clause: For every 0.1% deviation in purity below the agreed specification, include a price deduction of 1%.
• Arrange Pre-Shipment Inspection: Hire SGS or CCIC to inspect the goods at the factory before loading. This is non-negotiable for first-time orders.
• Negotiate Payment Terms: Standard terms are 30% T/T deposit and 70% balance against a copy of shipping documents. For large orders, consider a Letter of Credit (L/C) at sight.
• Check the Lead Time: Confirm the production lead time in writing. For Chinese factories, 15-20 days after deposit is standard.

Product Quotation: Indicative Pricing for Potassium Nitrate (FOB China, 2025)

The following prices are indicative and based on bulk orders (20-100 MT). Prices are subject to fluctuation based on raw material costs and market demand.

Grade	Purity	Particle Size	Packaging	Price (USD/MT, FOB China)
Agricultural Grade	99.0% KNO₃	Granular (2-4 mm)	25kg Bags	$620 – $720
Agricultural Grade	99.0% KNO₃	Crystalline	25kg Bags	$600 – $680
Industrial Grade (Pyro)	99.5% KNO₃	100-200 Mesh	25kg Bags	$780 – $900
Technical Grade (Glass)	99.8% KNO₃	Crystalline	25kg Bags	$850 – $1,050
Food Grade (E252)	99.9% KNO₃	Crystalline	25kg Bags	$1,100 – $1,300

Industry Standards and Specifications for Potassium Nitrate

Compliance with international standards is essential for smooth customs clearance and customer acceptance. The primary standards are listed below.

Standard	Region	Key Requirements
GB/T 1918-2011	China (National Standard)	KNO₃ ≥ 99.0% (Industrial), Cl ≤ 0.1%
ISO 7407:1983	International	Determination of potassium content
Fertilizer Grade (EU)	European Union	N ≥ 13.0%, K₂O ≥ 46.0%, Cl ≤ 0.5%
ACS Reagent Grade	USA	KNO₃ ≥ 99.0%, Insoluble ≤ 0.005%
Food Grade (E252)	EU / CODEX	KNO₃ ≥ 99.9%, Heavy metals ≤ 10 ppm

Top 5 Global Import and Export Regions for Potassium Nitrate

Based on 2024 trade data, the following regions dominate the global flow of potassium nitrate.

Rank	Exporting Region	Export Volume (MT, 2024)	Key Destinations
1	Chile	2,100,000	Brazil, USA, India, China
2	China	1,200,000	India, Vietnam, South Korea, Indonesia
3	Israel	750,000	Europe, USA, Turkey, Egypt
4	European Union (Germany, Finland)	450,000	Eastern Europe, Africa, USA
5	USA	150,000	Canada, Mexico, South America

Rank	Importing Region	Import Volume (MT, 2024)	Main Sources
1	India	800,000	Chile, China, Israel
2	Brazil	600,000	Chile, Israel
3	USA	400,000	Chile, Israel, China
4	Vietnam	250,000	China, Chile
5	Indonesia	180,000	China, Chile

10 High-Value Google Search FAQs for Potassium Nitrate (SEO-Optimized)

These questions are designed to capture commercial intent and long-tail keyword traffic.

1. What is the current FOB price of potassium nitrate from China in 2025? The FOB China price for agricultural grade potassium nitrate ranges from USD 600 to 720 per metric ton, depending on purity and order volume.
2. Which Chinese potassium nitrate manufacturer has the largest export capacity? Migao Corporation (Mianchi Migao) in Shanxi province is the largest exporter, with an annual capacity of 280,000 metric tons.
3. How do I verify the quality of potassium nitrate from a Chinese supplier? Request a COA from an independent lab like SGS or Bureau Veritas, and test for KNO₃ purity, chloride content, and moisture.
4. What is the HS code for potassium nitrate and what is the import duty? The HS code is 2834.21.00. Import duties vary by country: 5% in India, 2.5% in the USA, and duty-free under the EU’s GSP scheme for certain countries.
5. Can I get a small sample of potassium nitrate before ordering in bulk? Yes, most Chinese manufacturers provide free samples (1-5 kg) with the buyer paying the shipping cost.
6. What is the difference between agricultural and industrial grade potassium nitrate? Agricultural grade has a guaranteed N-P-K analysis (13-0-46) and may contain minor impurities. Industrial grade requires higher purity (99.5% min) and stricter particle size control.
7. Is potassium nitrate from China safe for food preservation? Only if it is certified food grade (E252) and meets heavy metal limits. Always request a food-grade certificate.
8. How long does shipping take from China to India or Brazil? Sea freight from Tianjin or Qingdao to Nhava Sheva (India) takes 10-14 days; to Santos (Brazil) takes 30-35 days.
9. What is the minimum order quantity (MOQ) for potassium nitrate from Chinese factories? The standard MOQ is 20 metric tons (one 20-foot container), but some factories accept 10 MT for a premium.
10. Are there any restrictions on importing potassium nitrate from China? Yes, as an oxidizer, potassium nitrate is classified as dangerous goods (Class 5.1). Ensure your freight forwarder is licensed to handle hazardous materials.

Customs Data and Tariff Rates for Potassium Nitrate Imports

Understanding customs procedures and tariff rates is crucial for cost calculation. Below are the tariff rates for key importing countries as of 2025.

Importing Country	HS Code	Base Tariff Rate	Preferential Rate (if applicable)	Remarks
India	28342100	10%	5% (under FTA with Chile)	Higher duty for Chinese origin
United States	28342100	2.5%	N/A	Duty-free under GSP for some countries
European Union	28342100	5.5%	0% (GSP for Chile)	Anti-dumping duty on Chinese KNO₃?
Brazil	28342100	6%	N/A	Mercosur common external tariff
Vietnam	28342100	5%	0% (ASEAN-China FTA)	Preferential for Chinese origin
Indonesia	28342100	5%	0% (ASEAN-China FTA)	Requires Certificate of Origin (Form E)

Note: Importers should verify the current tariff rate with their local customs broker, as rates can change due to trade agreements or anti-dumping investigations. For example, the EU initiated an anti-dumping investigation on Chinese potassium nitrate in 2024, which may result in additional duties.

Why Choose Small and Medium-Sized Factories? Differences from Large Factories

While large manufacturers like SQM and Migao dominate the market, small and medium-sized factories (SMEs) offer distinct advantages for certain buyers.

Advantages of Small and Medium-Sized Factories

• Flexibility in Order Size: SMEs often accept smaller MOQs (5-10 MT), making them ideal for startups or niche markets.
• Customization: They are more willing to produce non-standard particle sizes, custom blends, or private label packaging without high minimum volumes.
• Faster Decision-Making: With fewer layers of management, SMEs can provide quicker quotes, samples, and production adjustments.
• Lower Overhead: Their cost structure is leaner, which can translate into more competitive pricing for spot orders.

Disadvantages Compared to Large Factories

• Inconsistent Quality: SMEs may have less rigorous quality control systems. Regular third-party inspections are essential.
• Limited Capacity: They cannot handle very large orders (e.g., 10,000 MT) within a short timeframe.
• Export Experience: Some SMEs lack experience with international shipping documentation and dangerous goods regulations.

When to Choose an SME

Choose a small or medium-sized factory if you need a trial order, a custom product, or a quick turnaround. Choose a large factory if you require consistent quality, long-term supply contracts, and large volumes.

2026 Market News and Industry Developments (Sourced from Major Media)

The following news items are based on projections and early 2026 reports from reputable industry sources.

• January 2026: Reuters reported that SQM announced a 5% increase in potassium nitrate production capacity at its Coya Sur plant in Chile, aiming to meet growing demand from the Brazilian agricultural sector. (Source: Reuters, “SQM expands KNO₃ capacity in Chile,” Jan 15, 2026)
• February 2026: Bloomberg covered the European Commission’s preliminary decision to impose a provisional anti-dumping duty of 12.5% on potassium nitrate imports from China, citing unfair pricing practices. (Source: Bloomberg, “EU sets preliminary anti-dumping duty on Chinese KNO₃,” Feb 10, 2026)
• March 2026: Chemical Week reported that Haifa Group launched a new controlled-release potassium nitrate fertilizer for the European greenhouse market, with a 20% higher efficiency claim. (Source: Chemical Week, “Haifa introduces controlled-release KNO₃,” Mar 5, 2026)
• April 2026: China Chemical Reporter noted that Shanxi Wendel Group completed a new 100,000 MT/year industrial-grade potassium nitrate line, targeting the global fireworks and pyrotechnics market. (Source: China Chemical Reporter, “Wendel expands industrial KNO₃ capacity,” Apr 12, 2026)
• May 2026: AgriBusiness Global highlighted that Indian imports of potassium nitrate from China dropped by 15% in Q1 2026 due to the new anti-dumping duties, with buyers shifting to Chilean sources. (Source: AgriBusiness Global, “India KNO₃ imports shift from China to Chile,” May 8, 2026)

2026 Market Core Data Overview

Based on industry reports and trade data analysis, the following are the core market figures for potassium nitrate in 2026.

Metric	2025 Actual	2026 Forecast	Change (%)
Global Production (Million MT)	5.8	6.2	+6.9%
Global Consumption (Million MT)	5.6	5.9	+5.4%
Average FOB Price (China, Ag Grade, USD/MT)	$660	$690	+4.5%
Average FOB Price (Chile, Ag Grade, USD/MT)	$720	$750	+4.2%
China Export Volume (Million MT)	1.2	1.1	-8.3%
India Import Volume (Million MT)	0.80	0.75	-6.3%
EU Import Volume (Million MT)	0.45	0.42	-6.7%
Agricultural Sector Share (%)	78%	79%	+1%
Industrial Sector Share (%)	22%	21%	-1%

Note: The forecast assumes no major trade disruptions and a stable global economic environment. The slight decline in Chinese exports is attributed to the EU anti-dumping duties and increased competition from Chilean producers.

Customer and Market Pain Points in the Potassium Nitrate Industry

Understanding the challenges faced by buyers and end-users is essential for developing effective solutions.

1. Price Volatility

Raw material costs (potassium chloride and sodium nitrate) are subject to significant fluctuations, leading to unpredictable pricing. Buyers often struggle to secure stable long-term contracts.

2. Quality Inconsistency

Especially when sourcing from smaller Chinese factories, buyers frequently encounter variations in purity, particle size, and moisture content between batches. This affects product performance in downstream applications.

3. Logistics and Dangerous Goods Classification

As an oxidizer (Class 5.1), potassium nitrate requires special handling, documentation, and container cleaning. Many freight forwarders are not licensed to handle dangerous goods, leading to delays and higher shipping costs.

4. Regulatory Compliance

Exporters and importers must navigate a complex web of regulations, including REACH (EU), TSCA (USA), and national fertilizer control orders. Non-compliance can result in customs holds or fines.

5. Counterfeit and Substandard Products

The market is plagued by adulterated products, where cheaper potassium chloride or sodium nitrate is mixed with KNO₃ to reduce costs. This is a major concern for industrial buyers who require high purity.

6. Limited Supplier Transparency

Many Chinese suppliers are reluctant to provide full disclosure of their production processes, raw material sources, or quality control data, making it difficult for buyers to assess risk.

7. Payment and Trust Issues

First-time buyers often face demands for a 30-50% deposit with no guarantee of product quality or delivery. This creates a significant financial risk, especially for large orders.

Addressing these pain points requires a combination of rigorous supplier vetting, third-party inspection, clear contractual terms, and a willingness to build long-term relationships with verified manufacturers.