High-Purity Magnesium Sulfate Heptahydrate Supplier

High-Purity Magnesium Sulfate Heptahydrate Supplier | Buy Now

04 . Aug, 2025

1. Industry Trends: The Expanding Market of Magnesium Sulfate Heptahydrate

In recent years, Magnesium Sulfate Heptahydrate has been experiencing a robust surge in demand across pharmaceuticals, agriculture, water treatment, and process industries worldwide. According to Market Research Future, the global market for Magnesium Sulfate (MgSO₄·7H₂O) is projected to reach $1.2 billion USD by 2027, growing at a CAGR of nearly 5.8% from 2021-2027. The push for efficient, safe, and sustainable chemical raw materials has solidified its position especially in regions with strong agricultural and industrial infrastructure such as North America, China, and Europe.

Global Magnesium Sulfate Heptahydrate Market Share by Industry (2023)

2. Product Overview: Magnesium Sulfate Heptahydrate Key Parameters

Magnesium Sulfate Heptahydrate (CAS No: 10034-99-8), commonly known as Epsom salt, is a colorless crystalline substance highly valued for its high magnesium content and ready solubility in water. Its applications span fertilizer, feed additive, pharmaceutical excipient, and a water softener. The following specification table highlights its main technical parameters and competitive advantages.

Parameter	Specification (Industry Grade)	Specification (Pharma Grade)	Reference Standard
Purity (MgSO₄·7H₂O)	≥ 98.0%	≥ 99.5%	GB 29207-2012, USP/BP/EP
Appearance	Colorless or white crystalline powder/granular		-
Heavy Metals (as Pb)	≤ 0.002%	≤ 0.0005%	ISO 9001 / USP
Iron (Fe)	≤ 0.01%	≤ 0.0015%	ISO/USP
Chloride (Cl)	≤ 0.05%	≤ 0.014%	USP/BP
pH (5% solution)	5.0-9.2	5.0-7.0	USP/GB
Loss on Ignition	48.0-52.0%	48.0-52.0%	USP/ISO
Water Insoluble	≤ 0.05%	≤ 0.02%	BP/GB

Purity Levels: Magnesium Sulfate Heptahydrate from Leading Suppliers

3. Manufacturing Process Explained: Magnesium Sulfate Heptahydrate

Raw Material
(Magnesite, Kieserite or Sea Water)

High-purity source

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Acid Solution

Reacted with sulfuric acid (H₂SO₄)

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Crystallization

Cooling & slow precipitation

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Centrifugation & Drying

Solid-liquid separation

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Screening & Packaging

Product QA & ISO Testing

The advanced production of Magnesium Sulfate Heptahydrate at Baifeng Mining adheres to rigorous international standards (ISO 9001:2015, GMP, USP, BP). Precision crystallization guarantees product homogeneity and consistency, while stringent QA procedures ensure compliance with customer and regulatory requirements.

Material Characteristic: Colorless monoclinic crystalline with excellent solubility in water.
Processing: Enclosed reactors, continuous line crystallization, mechanical centrifugation.
Testing Standards: Raw, intermediate, and finished products extensively tested per ISO/USP/EP.
Durability: Maintains stable properties under ambient storage for 2+ years.
Industries Served: Petrochemical, metallurgy, agriculture, wastewater treatment, pharmaceutical.

4. Technical Advantages of Magnesium Sulfate Heptahydrate

Excellence in performance, cost-efficiency, and versatility makes Magnesium Sulfate Heptahydrate a sought-after choice. Leading features include:

High Purity: Achievable up to 99.7%, guarantees food/pharmaceutical compliance.
Superior Solubility: Dissolves instantly in water (710g/L at 20°C) for high-reactivity.
Eco-friendliness: Non-toxic, biodegradable, harmless to aquatic life.
Cost-effective Sourcing: Readily available, stable price structure.
Corrosion Resistance: Minimal risk to ferrous systems, ideal for pipelines/tank linings.
Energy Efficiency: Enables nutrient uptake in agriculture with minimized resource consumption.

Solubility & Durability Comparison

5. Supplier Comparison: Magnesium Sulfate Heptahydrate Vendors

Supplier	Purity (%)	Certifications	Delivery Time	Support
Baifeng Mining	99.5 – 99.7	ISO 9001, GMP, USP, BP	10-18 days	24h technical support
Supplier A	99.0 – 99.3	ISO 9001	18-25 days	Standard business hours
Supplier B	98.0 – 98.8	ISO 14001	20-30 days	5x8h email

Industry leaders select Baifeng Mining’s Magnesium Sulfate Heptahydrate for consistent high purity, comprehensive technical support, and globally recognized certifications. Advanced manufacturing ensures reliability and competitive delivery schedules.

6. Customized Solutions: Application-Oriented Magnesium Sulfate Heptahydrate

Agriculture: Custom granule size, rapid-dissolve formulation for fertigation.
Pharmaceutical: Enhanced batch traceability, ultra-low heavy metals, GMP packaging.
Water Treatment: Anti-caking, optimized dosing for corrosion suppression and pH balancing.
Industrial: Bulk supply (25kg/50kg/1T super-sack), tailored by sector.

Baifeng Mining’s technical team enables: collaborative development (OEM/Private Label), on-site pilot testing, and project-matched bulk logistics—all with ISO, ANSI, and FDA compliance.

Industry Application Allocation - 2023 Orders

7. Application Cases: Real-World Performance of Magnesium Sulfate Heptahydrate

Agriculture – Citrus Growers, Brazil: Soil remediation with Magnesium Sulfate Heptahydrate resulted in 14% crop yield increase, 10% fertilizer cost reduction (2022).
Feedback: “The product’s flowability and solubility sharply improved irrigation efficiency—enabling better absorption and nutrient delivery.” (Santos Agri-Tech)
Pharmaceutical – API Plant, India: Fully GMP-compliant Magnesium Sulfate Heptahydrate batches with traceability for parenteral preparations.
Feedback: “Low endotoxin lots are consistently achieved as verified by USP standards.”
Petrochemical – Pipeline Maintenance, Saudi Arabia: 95km steel pipeline protected against scale and corrosion. Project extended expected service life by 8+ years due to anti-scale efficacy.
Municipal Water Treatment, EU: High purity variant enables dosing control, minimal residues (2023 pilot case).
Performance report: “Complies with ISO 9001, minimized sludge formation by 17%.”

Magnesium Sulfate Heptahydrate Data Sheet At A Glance

Parameter	Typical Value	Unit	Test Method	Notes
Chemical formula	MgSO₄·7H₂O	-	-	Standard composition
Magnesium content (Mg)	9.8	%	EDTA titration	High value for fertilizers
Total sulfate (SO₄²⁻)	39.1	%	Gravimetric	Ensures plant nutrition
Bulk density	1.68	g/cm³	USP	Influences packaging format
Melting point	112	°C	ASTM	Thermal stability
Solubility at 20°C	710	g/L	ISO 976	Superior water solubility
Loss on ignition	49.8	%	ISO 9001	Product confirmation

8. Expert FAQ: Magnesium Sulfate Heptahydrate Technical FAQ

Q1. What is the structural form of Magnesium Sulfate Heptahydrate?

A1. It crystallizes in the monoclinic system as MgSO₄·7H₂O, forming needle-like or prismatic transparent crystals. This structure ensures high solubility and even ion dissociation in solution.

Q2. What key standards are adhered to in production?

A2. Production strictly follows ISO 9001:2015 for quality assurance, and USP/BP/EP pharmacopoeia standards for pharmaceutical grades. Food/feed grades comply with GB29207-2012 and relevant FDA import/export protocols.

Q3. How is particle size controlled and why does it matter?

A3. Particle size is regulated (0.5–3.0 mm for granules;

Q4. What are typical installation and dosage standards in industry?

A4. Dosing is tailored: agriculture (25–50 kg/ha); water treatment (2–5 ppm), pharma (according to USP protocol), with verification of compatibility via ANSI/ASTM application guides.

Q5. How long is the shelf life, and what storage conditions are recommended?

A5. Shelf life is typically 2–3 years under dry, ventilated storage. Packaging utilizes moisture-resistant, double PE-lined bags to maintain product integrity.

Q6. What is your logistics/lead-time policy for bulk orders?

A6. Standard delivery is 10–18 days (FCL); urgent shipments possible within 7 days (subject to stock). Orders include COA, MSDS, and third-party test reports upon request.

Q7. What after-sales service and technical support is provided?

A7. Global customers benefit from 24/7 technical assistance, COA re-issue, on-site QA audits, and customized usage guides & SDS materials, ensuring safety and regulatory compliance.

9. Delivery, Warranty & Customer Assurance

Delivery Cycle: Average lead-time is 10-18 days after PO and payment confirmation, with tracking and real-time logistics updates.
Warranty & Quality Commitment: All Magnesium Sulfate Heptahydrate shipments carry full compliance COA, and are backed by a 180-day quality guarantee covering purity and moisture content.
Support: Free technical consulting, document assistance (ISO, FDA, SGS, REACH), and on-site visit options for key accounts.

Contact Baifeng Mining for Tailored Magnesium Sulfate Heptahydrate Solutions