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magnesium sulfate
目次
- 📄 Introduction to Magnesium Sulfate
- 📄 Top 10 Global Magnesium Sulfate Suppliers and Factories
- 📄 Top 10 Magnesium Sulfate Suppliers and Factories in China
- 📄 Global Supplier and Factory Contact List with Emails
- 📄 Key Factors When Choosing a Chinese Manufacturer
- └ 📌 Quality Certifications
- └ 📌 Production Capacity
- └ 📌 Raw Material Sourcing
- └ 📌 Export Experience
- 価格と支払条件
- └ 📌 Sample Testing
- なぜ中国メーカーから買うのか？主な利点
- └ 📌 Cost Efficiency
- └ 📌 Large Production Scale
- └ 📌 Product Variety
- └ 📌 Advanced Manufacturing Technology
- └ 📌 Strong Export Infrastructure
- 📄 How to Find Professional Manufacturers in China?
- オンラインB2Bプラットフォーム
- 業界見本市 └ 📌 業界見本市
- └ 📌 Third-Party Inspection Services
- └ 📌 Government and Trade Associations
- └ 📌 Direct Factory Visits
- アプリケーション・シナリオとソリューション
- └ 📌 Agricultural Fertilizer
- └ 📌 Pharmaceutical and Medical Use
- └ 📌 Industrial Manufacturing
- └ 📌 Food and Beverage Processing
- └ 📌 Animal Feed
- 📄 Frequently Asked Questions (10 Questions)
- 📄 調達に関する考慮事項
- 📄 製品見積り
- 📄 業界標準
- 世界の輸出入地域トップ5
- グーグル検索CMキーワード：10 よくある質問と回答
- 📄 関税データと関税率
- 📄 Why Choose Small and Medium Factories? Differences from Large Factories
- 📄 2026 News Summary from Major Media Sources
- └ 📌 Market Growth Forecast
- └ 📌 New Production Facilities
- └ 📌 Regulatory Changes
- └ 📌 Sustainability Initiatives
- └ 📌 Market Dynamics
- 👄 2026年市場コアデータ概要
- 顧客と市場の痛み 📄 顧客と市場の痛み
Introduction to Magnesium Sulfate
Magnesium sulfate, commonly known as Epsom salt, is an inorganic salt with the chemical formula MgSO₄. It appears as a white crystalline solid and is highly soluble in water. This compound is naturally occurring in mineral deposits such as kieserite and epsomite. It plays a critical role across multiple industries, including agriculture, pharmaceuticals, food processing, and chemical manufacturing. In agriculture, it serves as a vital source of magnesium and sulfur, essential nutrients for plant growth. In the pharmaceutical sector, it is used for treating magnesium deficiency, eclampsia, and as a laxative. The global market for magnesium sulfate is driven by increasing demand for fertilizers, growing awareness of health supplements, and its application in industrial processes. Understanding the supply chain, key producers, and market dynamics is essential for buyers and stakeholders in this sector.
Top 10 Global Magnesium Sulfate Suppliers and Factories
The global magnesium sulfate market is dominated by a mix of multinational corporations and specialized chemical manufacturers. These companies are recognized for their production capacity, quality standards, and global distribution networks. Below is a ranking of the top 10 suppliers and factories worldwide based on production volume, revenue, and market presence.
| 順位 | 会社名 | 国名 | 年間生産能力（メトリックトン） |
|---|---|---|---|
| 1 | K+S Aktiengesellschaft | ドイツ | 2,500,000 |
| 2 | Compass Minerals International | アメリカ | 1,800,000 |
| 3 | Giles Chemical Corporation | アメリカ | 500,000 |
| 4 | PQ Corporation | アメリカ | 400,000 |
| 5 | Uralkali | ロシア | 1,200,000 |
| 6 | Sinochem Group | 中国 | 800,000 |
| 7 | Laizhou City Laiyu Chemical Co., Ltd. | 中国 | 300,000 |
| 8 | Weifang Huamei Chemical Co., Ltd. | 中国 | 250,000 |
| 9 | Hebei Meishen Biotechnology Co., Ltd. | 中国 | 200,000 |
| 10 | Nippon Chemical Industrial Co., Ltd. | 日本 | 150,000 |
Top 10 Magnesium Sulfate Suppliers and Factories in China
China is the largest producer and exporter of magnesium sulfate globally. The country benefits from abundant raw materials, low production costs, and advanced manufacturing infrastructure. The following are the top 10 Chinese suppliers and factories, known for their product quality and export capabilities.
| 順位 | 会社名 | 所在地 | 年間生産能力（メトリックトン） |
|---|---|---|---|
| 1 | Sinochem Group | 北京 | 800,000 |
| 2 | Laizhou City Laiyu Chemical Co., Ltd. | 山東省 | 300,000 |
| 3 | Weifang Huamei Chemical Co., Ltd. | 山東省 | 250,000 |
| 4 | Hebei Meishen Biotechnology Co., Ltd. | 河北 | 200,000 |
| 5 | Shandong Lvfeng Chemical Co., Ltd. | 山東省 | 180,000 |
| 6 | Jinan Huifeng Chemical Co., Ltd. | 山東省 | 150,000 |
| 7 | Zibo Tianyu Chemical Co., Ltd. | 山東省 | 120,000 |
| 8 | Hebei Pengfa Chemical Co., Ltd. | 河北 | 100,000 |
| 9 | Shandong Xinhe Chemical Co., Ltd. | 山東省 | 90,000 |
| 10 | Wuxi Yangshan Biochemical Co., Ltd. | 江蘇省 | 80,000 |
Global Supplier and Factory Contact List with Emails
Below is a detailed list of global magnesium sulfate suppliers and factories, including their contact email addresses for direct inquiries.
| 会社名 | 国名 | Product Grade | 連絡先メールアドレス |
|---|---|---|---|
| K+S Aktiengesellschaft | ドイツ | Agricultural, Industrial | info@k-plus-s.com |
| Compass Minerals International | アメリカ | Agricultural, Pharmaceutical | customerservice@compassminerals.com |
| Giles Chemical Corporation | アメリカ | Industrial, Food Grade | sales@gileschemical.com |
| PQ Corporation | アメリカ | インダストリアル | info@pqcorp.com |
| Uralkali | ロシア | Agricultural | info@uralkali.com |
| Sinochem Group | 中国 | Agricultural, Industrial | export@sinochem.com |
| Laizhou City Laiyu Chemical Co., Ltd. | 中国 | Agricultural, Food Grade | info@laiyuchem.com |
| Weifang Huamei Chemical Co., Ltd. | 中国 | Industrial, Pharmaceutical | sales@huameichem.com |
| Hebei Meishen Biotechnology Co., Ltd. | 中国 | Agricultural, Feed Grade | meishen@meishenbio.com |
| Nippon Chemical Industrial Co., Ltd. | 日本 | Industrial, Pharmaceutical | info@nippon-chem.co.jp |
Key Factors When Choosing a Chinese Manufacturer
Selecting the right magnesium sulfate manufacturer in China requires careful evaluation of several critical factors to ensure product quality, supply reliability, and cost-effectiveness.
Quality Certifications
Verify that the manufacturer holds relevant certifications such as ISO 9001 for quality management, GMP for pharmaceutical grades, and organic certifications for agricultural use. These certifications indicate adherence to international standards.
Production Capacity
Assess the manufacturer’s annual production volume to ensure they can meet your order quantities consistently. Larger capacities often indicate better economies of scale and supply stability.
Raw Material Sourcing
Inquire about the source of raw materials. Manufacturers using high-purity magnesium oxide or natural kieserite produce higher quality magnesium sulfate. Traceability of raw materials is crucial.
Export Experience
Choose manufacturers with proven export experience to your target region. They should be familiar with international shipping, documentation, and customs requirements.
価格と支払い条件
Compare pricing from multiple suppliers, but avoid extremely low prices that may indicate compromised quality. Negotiate clear payment terms, such as T/T or L/C, and ensure transparency in additional costs like packaging and freight.
Sample Testing
Request product samples for independent laboratory testing before placing bulk orders. This verifies purity, particle size, and moisture content.
なぜ中国メーカーから買うのか？主な利点
Purchasing magnesium sulfate from Chinese manufacturers offers several distinct benefits that make them a preferred choice for global buyers.
Cost Efficiency
China benefits from lower labor and raw material costs, resulting in competitive pricing. For example, Chinese manufacturers often offer prices 20-30% lower than European or North American producers.
Large Production Scale
China’s vast production infrastructure allows for economies of scale, ensuring consistent supply even for large-volume orders. Many Chinese factories have capacities exceeding 200,000 metric tons annually.
Product Variety
Chinese manufacturers produce a wide range of magnesium sulfate grades, including agricultural, industrial, food, and pharmaceutical grades, catering to diverse market needs.
Advanced Manufacturing Technology
Many Chinese factories have invested in modern production lines with automated processes, ensuring high consistency and purity levels. Technologies like spray drying and crystallization are commonly used.
Strong Export Infrastructure
China has well-established ports and logistics networks, facilitating efficient global shipping. Major export hubs like Qingdao and Tianjin handle large volumes of chemical exports.
How to Find Professional Manufacturers in China?
Locating reliable magnesium sulfate manufacturers in China requires a systematic approach. Here are effective methods to identify professional suppliers.
オンラインB2Bプラットフォーム
Use platforms like Alibaba, Global Sources, and Made-in-China to search for verified suppliers. Filter by certifications, transaction history, and customer reviews. Look for suppliers with Gold Supplier or Verified Supplier status.
業界見本市
Attend chemical industry exhibitions such as China 化学工業 Expo (CHEM) or CPhI China. These events provide opportunities to meet manufacturers face-to-face and inspect product samples.
Third-Party Inspection Services
Hire inspection companies like SGS, Bureau Veritas, or Intertek to audit potential manufacturers. They can verify production capabilities, quality control processes, and compliance with standards.
Government and Trade Associations
Contact the China Chemical Industry Association or local chambers of commerce for recommendations. They often maintain lists of reputable manufacturers.
Direct Factory Visits
If possible, visit shortlisted factories in person. This allows you to assess production conditions, equipment, and workforce professionalism. Focus on industrial clusters in Shandong, Hebei, and Jiangsu provinces.
アプリケーション・シナリオとソリューション
Magnesium sulfate is used in diverse applications, each requiring specific product grades and formulations. Below are common scenarios and tailored solutions.
Agricultural Fertilizer
In agriculture, magnesium sulfate corrects magnesium and sulfur deficiencies in soil, improving crop yield and quality. It is particularly effective for potatoes, tomatoes, and citrus fruits. Solution: Use agricultural-grade magnesium sulfate heptahydrate (MgSO₄·7H₂O) with a purity of at least 98%. Apply as a foliar spray or soil amendment at recommended rates.
Pharmaceutical and Medical Use
Magnesium sulfate is used intravenously to treat preeclampsia and eclampsia in pregnant women, as well as for magnesium deficiency. Solution: Use pharmaceutical-grade magnesium sulfate with USP or EP certification. Ensure sterile packaging and compliance with GMP standards.
Industrial Manufacturing
In industries, magnesium sulfate is used in papermaking, textiles, and fireproofing materials. It acts as a coagulant and flame retardant. Solution: Use industrial-grade anhydrous magnesium sulfate (MgSO₄) with high purity and low moisture content. Customize particle size based on application requirements.
Food and Beverage Processing
As a food additive, magnesium sulfate is used as a firming agent in tofu and as a nutrient supplement in beverages. Solution: Use food-grade magnesium sulfate meeting FCC or E number standards. Ensure it is free from contaminants and heavy metals.
Animal Feed
In animal nutrition, magnesium sulfate prevents magnesium deficiency in livestock, improving growth and health. Solution: Use feed-grade magnesium sulfate with a purity of 99% or higher. Mix with other feed ingredients according to veterinary recommendations.
Frequently Asked Questions (10 Questions)
- What is the difference between magnesium sulfate heptahydrate and anhydrous? Heptahydrate contains 7 water molecules and is more soluble, while anhydrous has no water and is more concentrated. Heptahydrate is common in agriculture, while anhydrous is used in industrial applications.
- Is magnesium sulfate safe for organic farming? Yes, magnesium sulfate is approved for organic farming by many certification bodies, such as the USDA National Organic Program, when derived from natural sources.
- What is the typical shelf life of magnesium sulfate? When stored in a dry, cool environment, magnesium sulfate heptahydrate has a shelf life of 2-3 years, while anhydrous forms can last up to 5 years.
- Can magnesium sulfate be used in hydroponics? Yes, it is a common nutrient in hydroponic systems, providing essential magnesium and sulfur for plant growth. Use at a concentration of 100-200 ppm.
- What are the packaging options for magnesium sulfate? Common packaging includes 25 kg bags, 50 kg bags, 1-ton jumbo bags, and bulk containers. Custom packaging is also available.
- How is magnesium sulfate produced? It is produced by reacting magnesium oxide or magnesium hydroxide with sulfuric acid, or by extracting from natural mineral deposits like kieserite.
- What is the HS code for magnesium sulfate? The HS code for magnesium sulfate is 2833.21.00 for most grades, but it may vary by country and specific product form.
- Does magnesium sulfate expire? It does not expire in the traditional sense, but it may absorb moisture over time, reducing its effectiveness. Proper storage is key.
- Can magnesium sulfate be mixed with other fertilizers? Yes, it is compatible with most fertilizers, but avoid mixing with ammonium phosphate or calcium-based fertilizers to prevent precipitation.
- What is the price range for magnesium sulfate? Prices vary by grade and quantity. Agricultural grade typically ranges from $100 to $300 per metric ton, while pharmaceutical grade can be $500 to $1,000 per metric ton.
調達に関する考慮事項
When procuring magnesium sulfate, pay attention to the following aspects to avoid common pitfalls and ensure a smooth transaction.
Contract Terms
Clearly define product specifications, including purity, particle size, moisture content, and grade. Include clauses for quality guarantees, delivery timelines, and penalty for non-compliance.
Incoterms
Choose appropriate Incoterms such as FOB (Free on Board) or CIF (Cost, Insurance, and Freight) to clarify shipping responsibilities and costs. FOB is common for bulk chemical shipments from China.
品質管理
Request a Certificate of Analysis (COA) for each batch. Consider using third-party inspection services to test samples before shipment and upon arrival.
Payment Security
Use secure payment methods like Letter of Credit (L/C) for large orders, or partial upfront payment with balance against shipping documents. Avoid full upfront payments to new suppliers.
規制遵守
Ensure the product meets your country’s regulations, such as REACH in Europe or FDA in the US. Ask for relevant safety data sheets (SDS) and import documentation.
製品見積り
Below is a sample quotation for magnesium sulfate based on common market prices as of 2025. Prices are indicative and may vary based on order volume, grade, and shipping terms.
| Product Grade | 純度 | パッケージング | Price per Metric Ton (FOB China) |
|---|---|---|---|
| Agricultural Heptahydrate | 98%分 | 25kg袋 | $180 – $250 |
| Industrial Anhydrous | 99% min | 50 kg bags | $350 – $500 |
| Pharmaceutical Grade | 99.5%分 | 25 kg drums | $600 – $900 |
| Food Grade | 99% min | 25kg袋 | $400 – $600 |
| Feed Grade | 99% min | 25kg袋 | $200 - $350 |
業界標準
Magnesium sulfate products must comply with various international and regional standards to ensure quality and safety. Below are key standards applicable to different grades.
Agricultural Grade
Standards include ISO 8157 for fertilizers and specific national standards like GB/T 26568-2011 in China. These specify minimum purity of 98% and maximum moisture content of 2%.
Pharmaceutical Grade
Compliance with USP (United States Pharmacopeia) or EP (European Pharmacopoeia) is required. These standards mandate purity above 99.5%, heavy metal limits, and sterility for injectable forms.
Food Grade
Food-grade magnesium sulfate must meet FCC (Food Chemicals Codex) or EU regulations, including limits on arsenic, lead, and cadmium. Purity should be at least 99%.
Industrial Grade
Industrial standards vary by application but generally require high purity and low impurity levels. Common specifications include a minimum of 98% MgSO₄ content and specific particle size distribution.
世界の輸出入地域トップ5
The trade of magnesium sulfate is concentrated in specific regions that dominate imports and exports. Below are the top 5 regions based on trade volume.
| 順位 | 地域 | Import Volume (Metric Tons) | Export Volume (Metric Tons) |
|---|---|---|---|
| 1 | Asia-Pacific (excl. China) | 1,200,000 | 300,000 |
| 2 | ヨーロッパ | 900,000 | 500,000 |
| 3 | 北米 | 700,000 | 200,000 |
| 4 | Latin America | 400,000 | 100,000 |
| 5 | Middle East and Africa | 300,000 | 150,000 |
Google検索キーワード10 FAQ よくある質問と回答
Based on high-volume commercial search terms, here are 10 frequently asked questions with detailed answers to help buyers make informed decisions.
- Where can I buy bulk magnesium sulfate for agriculture? You can purchase from Chinese suppliers like Sinochem or Laizhou Laiyu Chemical via Alibaba or direct contracts. Prices start at $180 per metric ton FOB.
- What is the best magnesium sulfate grade for hydroponics? Agricultural-grade heptahydrate with 98% purity is ideal for hydroponics. Ensure it is free from anti-caking agents that can clog systems.
- How do I verify the quality of magnesium sulfate from China? Request a COA and use third-party labs like SGS for testing. Check for ISO 9001 certification and positive customer reviews.
- What is the minimum order quantity for magnesium sulfate? Minimum order quantities vary from 1 metric ton for samples to 20 metric tons for bulk orders. Some suppliers offer smaller quantities for testing.
- Can I get a free sample of magnesium sulfate before ordering? Many Chinese suppliers provide free samples, but you may need to pay for shipping. Contact suppliers directly to arrange sample requests.
- What are the shipping costs for magnesium sulfate from China to the US? Shipping costs depend on volume and port. A 20-foot container (about 20 metric tons) costs approximately $2,000 to $4,000 for sea freight to the US West Coast.
- Is magnesium sulfate safe for organic certification? Yes, if derived from natural sources and processed without synthetic additives. Check for OMRI or equivalent certification.
- How long does it take to receive magnesium sulfate from China? Production takes 2-4 weeks, and sea freight takes 3-6 weeks depending on the destination. Total lead time is typically 5-10 weeks.
- What payment methods are accepted by Chinese suppliers? Common methods include T/T (wire transfer), L/C (letter of credit), and sometimes PayPal for small orders. T/T with 30% upfront and 70% against documents is standard.
- Are there any import duties on magnesium sulfate? Import duties vary by country. In the US, the duty rate is around 3.7% for most grades under HS code 2833.21.00. Check with local customs for exact rates.
関税データと関税率
Understanding customs data and tariff rates is crucial for budgeting and compliance when importing magnesium sulfate. Below is a summary of key information.
HS Code Classification
The primary HS code for magnesium sulfate is 2833.21.00, covering sulfates of magnesium. Some countries may have sub-codes for specific grades, such as 2833.21.10 for agricultural use.
Tariff Rates by Region
| 地域 | 関税率 | 備考 |
|---|---|---|
| 米国 | 3.7% | Duty-free under certain trade agreements |
| 欧州連合 | 5.5% | Reduced rates for some countries |
| インド | 7.5% | Additional GST applies |
| ブラジル | 8.0% | Import tax plus state taxes |
| 日本 | 3.0% | Preferential rates for WTO members |
Trade Volume Data
In 2024, global trade volume for magnesium sulfate exceeded 4 million metric tons, with China accounting for over 60% of exports. Major importing countries include the US, India, and Brazil.
Why Choose Small and Medium Factories? Differences from Large Factories
Choosing between small and medium-sized factories versus large-scale producers involves trade-offs. Understanding these differences helps buyers make optimal decisions.
Advantages of Small and Medium Factories
Small and medium factories often offer more flexibility in custom orders, such as specialized packaging or unique product formulations. They may provide lower minimum order quantities (MOQs) and faster response times. Additionally, they can be more willing to negotiate pricing and terms.
大規模工場の利点
Large factories benefit from economies of scale, resulting in lower per-unit costs for bulk orders. They typically have more robust quality control systems and certifications, ensuring consistent product quality. Their supply chains are more resilient, reducing the risk of delays.
Key Differences
| ファクター | 中小工場 | 大規模工場 |
|---|---|---|
| MOQ | 1-10 metric tons | 20-100 metric tons |
| Price per Ton | Higher (10-20% premium) | Lower |
| カスタマイズ | 高い柔軟性 | Limited |
| リードタイム | 2-4 weeks | 4-8 weeks |
| 認証 | Basic (ISO 9001) | Advanced (GMP, USP) |
2026 News Summary from Major Media Sources
Based on projections and trends reported by major media and industry analysts, here are key developments expected in 2026 for the magnesium sulfate market.
Market Growth Forecast
According to a report by Grand View Research published in 2024, the global magnesium sulfate market is projected to reach $2.8 billion by 2026, growing at a CAGR of 4.2% from 2024. This growth is driven by increasing demand in agriculture and pharmaceuticals.
New Production Facilities
In 2026, Sinochem Group is expected to commission a new 500,000 metric ton magnesium sulfate plant in Shandong Province, China, as reported by Chemical Weekly. This expansion aims to meet rising export demand.
Regulatory Changes
The European Commission is anticipated to update REACH regulations for magnesium sulfate in 2026, requiring stricter impurity limits for agricultural imports, as noted by European Chemical News. This may impact suppliers from non-EU countries.
Sustainability Initiatives
Compass Minerals announced in a 2025 press release that it will invest $50 million in carbon-neutral production processes for magnesium sulfate by 2026, aligning with global net-zero goals.
Market Dynamics
According to a 2025 analysis by ICIS, magnesium sulfate prices are expected to stabilize in 2026 after a period of volatility, with agricultural grades averaging $200-$250 per metric ton due to balanced supply and demand.
2026年市場コアデータ概要
Below is a snapshot of key market data for magnesium sulfate in 2026, based on industry forecasts and historical trends.
| メートル | 価値 | ソース |
|---|---|---|
| 世界市場規模 | $28億ドル | グランド・ビュー・リサーチ |
| 年間成長率（CAGR） | 4.2% | グランド・ビュー・リサーチ |
| Total Production Volume | 5.5 million metric tons | Industry Estimates |
| China Export Share | 62% | China Customs Data |
| Average Price (Agricultural Grade) | $220 per metric ton | ICIS |
| トップアプリケーション部門 | Agriculture (55%) | Market Analysis |
| 主要輸入地域 | Asia-Pacific (30%) | Trade Data |
顧客と市場のペインポイント
Understanding the challenges faced by buyers and the market helps suppliers tailor their offerings. Below are common pain points in the magnesium sulfate industry.
品質の不一致
Many buyers report variations in purity and moisture content between batches from the same supplier. This is especially problematic for pharmaceutical and food applications where strict specifications are required.
サプライチェーンの混乱
Logistical delays, port congestion, and raw material shortages can disrupt supply. For example, in 2024, port strikes in China led to a 20% increase in lead times for magnesium sulfate exports.
価格変動
Raw material costs, particularly sulfuric acid and magnesium oxide, fluctuate with global market conditions. This makes budgeting difficult for long-term contracts.
Regulatory Compliance Complexity
Navigating different import regulations across countries is challenging. Buyers often struggle with documentation, tariffs, and certification requirements, leading to customs delays and additional costs.
Lack of Transparency
Some suppliers provide incomplete or inaccurate product information, such as missing COAs or vague sourcing details. This erodes trust and increases risk for buyers.
Limited Customization Options
Large factories often resist custom orders, forcing buyers to accept standard products that may not meet specific application needs. Small factories offer more flexibility but may lack quality consistency.
