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05 . Aug, 2025

Magnesium Sulfate Market Overview & Industry Trends (2024)

Magnesium Sulfate (visit product page) is a pivotal inorganic chemical widely adopted across fertilizers, pharmaceuticals, food additives, industrial manufacturing, and the petroleum sector. With the global magnesium sulfate market size surpassed USD 1.2 Billion in 2023 (Markets & Markets), the demand is projected to rise at a CAGR of 4.5%, fueled by accelerating agricultural applications, water treatment, and pharmaceutical manufactories.

Growing Demand in Fertilizers: Over 70% of Magnesium Sulfate is consumed in agriculture for magnesium supplementation and soil improvement (source: IFA 2023).
Pharmaceutical Standard: USP/BP Grade Magnesium Sulfate is crucial for IV therapy and drug manufacturing.
Industrial Adoption: Enhanced corrosion resistance and eco-friendliness promote its use in petrochemical, textile, and water treatment industries.
Industry Certifications: Global manufacturers follow ISO 9001, GMP, and FDA standards ensuring product quality and traceability.

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Key Technical Parameters of Magnesium Sulfate

Parameter	Unit	Standard Spec (Tech Grade)	Standard Spec (Food/Pharma Grade)	Testing Standard
MgSO₄ Content	%	≥ 98.0	≥ 99.5	GB/T 10506, USP, ISO 9001
MgO Content	%	≥ 16.0	≥ 16.2	ISO/FDAtest, SGS onboard
pH (5% solution)	-	5.0–9.2	6.0–8.0	ISO 3016
Cl^- (Chloride)	%	≤ 0.02	≤ 0.01	ISO 2479
Heavy Metals (Pb, As, etc.)	ppm	≤ 10	≤ 2	USP/FCC
Granularity / Mesh	mesh	50–200	80–200	QC Sampling & Sieving, ISO 2591
Moisture (% by mass)	%	≤ 0.3	≤ 0.1	ISO 15549

Global Magnesium Sulfate Usage Breakdown

Magnesium Sulfate Market Value, 2020-2024

Specification Comparison: Industrial vs Pharma Grade

Magnesium Sulfate Manufacturing Process Insight

High-purity Magnesium Sulfate is produced via a controlled chemical process with strict quality assurance. The advanced process implemented by leading manufacturers like BaiFeng Mining (Product Details) guarantees compliance with ISO 9001:2015 and USP standards. Below is a typical step-by-step illustration of the process:

Raw Material Sourcing: High-purity magnesium ore (Magnesite) or Magnesium Oxide, and Sulfuric Acid.
Chemical Reaction: MgO (or MgCO₃) reacts with H₂SO₄ under controlled temperature, yielding high-purity MgSO₄ solution.
Filtration: Multi-stage filtration removes impurities/heavy metals, aided by nano-membrane tech (if food/pharma grade).
Crystallization & Centrifugation: Solution is cooled, Magnesium Sulfate crystallizes out, then separated and washed.
Drying & Granulation: Rotary or fluidized bed dryers reduce moisture to <0.3% (tech-grade); granules milled to specification.
QC & Packaging: Analytical QC (e.g. AAS for purity, ISO 2591 for mesh size). Sterile packaging for pharma/food, sealed PE/PP bags for industrial.

Process Flow Diagram | Raw → Reaction → Filtration → Crystallization → Drying → QC → Packaging

Magnesium Sulfate Technical Edge & Industry Certifications

Material Excellence: Sourced from high-purity magnesite/mineral; processed via high-purity sulfuric acid. Ensures maximum MgSO₄ content & low impurities.
Manufacturing: Leading factories employ blending, refining, casting, and strict ISO 9001:2015/ISO 2591 validation. GMP/ISO processes ensure batch-to-batch consistency.
Inspection & QC: Every lot undergoes multi-parameter QC: ICP-MS/EDX for heavy metals, mesh size via sieving, solution clarity, pH, and residue checks; audited under SGS, BV, and local regulators.
Longevity: Sealed and stable up to 3+ years when stored in cool, dry, chemical storage conditions.
Corrosion Resistance: Excellent stability in acidic and basic environments; non-caking and low hygroscopicity, meets ASTM/FDA use in food/pharma pipelines.
Industry Certification: ISO 9001, GMP (Good Manufacturing Practice), REACH compliance (ECHA), and major accreditations.

Application Scenarios & Technical Advantages

1. Agriculture & Fertilizer:

Supplies essential magnesium for chlorophyll production and crop yield; dissolves rapidly without soil compaction.
Widely used in tobacco, vegetables, and fruit plantations. Yield increase of up to 16.8% in trials (FAO Data, 2022).
Enhances fertilizer blends (NPK+Mg).

2. Water Treatment:

Acts as a coagulation/flocculant assistant, aiding in heavy-metal precipitation.
Prevents caustic scaling, supports eco-friendly effluent management.

3. Petrochemical Processes:

Regeneration of resins, pH buffering, and production of flame-retardant materials.

4. Pharmaceuticals & Life Sciences:

Key ingredient in intravenous solutions, hemodialysis, ophthalmic salt blends; USP/BP grade used only.

5. Food Industry:

Emulsifier, firming agent, and flavor enhancer; FDA-approved safety profile.

Factory Comparison: Leading Magnesium Sulfate Producers

Manufacturer	Annual Capacity (k MT)	Certifications	Main Markets	Specialization	MOQ (Tons)
BaiFeng Mining	120	ISO 9001, GMP, FDA, REACH	Europe, USA, S.E. Asia	High purity, bulk/agro, contract OEM	5
U.S Magnesium Inc.	60	ISO 9001, USP, FDA	NA, EU	Pharma & IV grade	10
K+S Group	55	ISO 9001, GMP, REACH	EU, APAC	Fertilizer, food	15
Dashiqiao Zhonghe	90	ISO9001, Halal, SGS	S. America, MENA	Industrial, mining	25

Custom-Tailored Magnesium Sulfate Solutions

Customized Mesh Size: 50–200 mesh, available for agriculture sprayers, granular blends, or water-soluble applications.
Purity Adaptation: Custom tech/food/pharma grade per ISO/USP/FCC, up to 99.8% MgSO₄ for injectables.
Anti-caking/Additivization: Specific anti-caking formulations for humidity-prone environments.
Contract OEM & Packaging: Private-label printing, custom bagging (5kg to 1200kg super sack).
Supply Chain Integration: Rapid delivery via sea, train, or multimodal for global agile response.
Industry Technical Support: Dedicated technical consultants for application trials, certification, and tender documentation.

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Real-world Application Cases

[Agriculture] Indonesian Tobacco Plantations
In 2023, a leading agro-company in Sumatra adopted Magnesium Sulfate-enriched drip fertilizer for tobacco fields. Result: 19% increase in leaf yield/ha, 0.7% higher nicotine quality, and improved soil balancing. Customer feedback: “No caking, water-soluble, consistently superior leaf tonnage.”

[Water Treatment] EU Brewery Effluent Neutralization
BaiFeng Mining supplied high-purity Magnesium Sulfate for an EU brewery’s wastewater system—heavy-metal removal efficiency up to 96.4% (ISO/EN test). Customer: “Fast delivery, traceable batch, achieved EU effluent compliance.”

[Pharmaceutical] IV Formulations
Global pharma firm (India/US) implemented BaiFeng's pharma-grade Magnesium Sulfate in calcium antagonist solutions; passed all USP/BP compendial tests with zero heavy metals detected. Regulatory audit “Fully meets cGMP/USP/FDA import standards.”

Global Clients Served: Syngenta, Yara, Sinochem, Pfizer, Katyusha Agro, and 200+ downstream OEMs.

Delivery Timeline ● Warranty ● Full-Service Support

Lead Time: Standard product ready to ship within 7–14 days for bulk, or 3–5 workdays for pharma/food packages.
Quality Guarantee: Each lot accompanied with full COA (Certificate of Analysis), MSDS, and traceable batch number.
Warranty: All Magnesium Sulfate covered with a 12 months warranty under correct storage/handling, ensuring consistency, purity, and mesh size.
Certification Support: Documentation for ISO, FDA, REACH, REACH SVHC-free, RoHS, and customer audits available upon request.
24/7 Technical Support: On-call technical and application support team; remote site visit consultation for international buyers.

Technical FAQs for Magnesium Sulfate

Q1: What is the optimum mesh size for agricultural Magnesium Sulfate applications?

A: For foliar and drip irrigation, 80–120 mesh is ideal for rapid dissolution; 50–80 mesh is suitable for bulk blending. Mesh size affects solubility and even distribution.

Q2: Which standards regulate Magnesium Sulfate for pharma/food applications?

A: USP, BP, EP (European Pharmacopoeia), FCC, ISO 9001, FDA (for US food/pharma import). All batches must pass stringent heavy metal and chloride testing; factory must be GMP certified.

Q3: Is there a difference between heptahydrate and monohydrate Magnesium Sulfate?

A: Yes. Heptahydrate (MgSO₄·7H₂O) is the classic Epsom salt, highly soluble. Monohydrate (MgSO₄·H₂O) is less hygroscopic and preferred for certain industrial uses. Both are available as per technical requirements.

Q4: What are acceptable impurity and heavy metal content limits?

A: For fertilizer: Pb ≤ 10ppm, As ≤ 1ppm, Cd ≤ 1ppm. For food/pharma: Pb ≤ 2ppm, As/Cd undetectable. International norms: Refer to USP/EP and FAO/WHO Codex.

Q5: Can Magnesium Sulfate be used in drinking water treatment?

A: Yes, when supplied in food/pharma grade with full ISO/FCC/FDA documentation and tested for heavy metals. Used as hardness adjuster and flocculant support.

Q6: Installation & Storage Best Practice for Magnesium Sulfate

A: Keep in sealed PE/PP liners, away from moisture and strong acids/bases. Stack on pallets in dry, ventilated warehouse, below 30℃, avoid direct sunlight to prevent caking.

Q7: How is Magnesium Sulfate tested for mesh and purity before dispatch?

A: Mesh via ISO 2591 dry sieving; Purity by gravimetric analysis and ICP-MS, pH by electrode, heavy metals by spectrometry. All results included with COA, checked by QC.

References & Industry Insights:

For in-depth technical sheets, demo samples, or expert consulting, visit BaiFeng Mining’s Magnesium Sulfate page.

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