Contents
Iron Oxide: Composition, Formation, and Industrial Applications
Iron oxide is a fine chemical powder composed of microscopic particles. It occurs naturally through the reaction between iron atoms and oxygen (O₂) in the air, often in the presence of water. With its production and distribution of black iron oxide (Fe₃O₄), EUNANO plays a key role in supplying high-quality magnetite to industries in Turkiye and United States, contributing to the global iron oxide supply network.
Our nano-scale black magnetite products are widely used for industrial water purification, magnetic separation processes, cooling systems, and specialized magnetic coatings. They are also integral to high-tech electronic devices, including optical instruments, microwave systems, magnetic sensors, and laser printers. Beyond electronics, magnetite finds applications in power generation plants, the automotive sector, and even cosmetics. Future developments are expected to include next-generation, heat-resistant, and highly durable paints.
Through our website, you can purchase magnetite iron oxide powder in two grades:
20 nm particle size: 97% purity
30–40 nm particle size: 95% purity
Both grades share the same international CAS number: #1317-61-9.
Orders for the 20 nm variant are available in 1 kg or 25 kg packages. For the 30-40 nm grade, minimum orders start at 1 ton, with bulk availability up to 100 tons. The 95% purity, 30–40 nm nanocomposite is particularly suitable for wastewater treatment in factories and industrial facilities.
For detailed information and orders, contact our customer service at (+90) 544 317 0526.
Iron Oxide Prices
Magnetite: Structure, Properties, and Industrial Significance
Magnetite (Fe₃O₄) is a naturally occurring iron oxide mineral distinguished by the coexistence of two distinct oxidation states of iron—ferrous (Fe²⁺) and ferric (Fe³⁺)—within its crystalline structure. Exhibiting a characteristic black coloration, this mineral is renowned for its exceptional magnetic susceptibility, earning it the designation magnetic iron oxide. Owing to its unique physicochemical characteristics, magnetite plays a pivotal role in multiple industrial sectors, scientific disciplines, and advanced technological applications.
In its finely divided powder form, magnetite offers a significantly increased surface area, particularly when engineered to the nanometric scale. At particle diameters of approximately 20 nanometers—as is the case in high-performance commercial grades—the enhanced surface-to-volume ratio substantially augments chemical reactivity and facilitates superior functional performance across a diverse range of applications.
This nanostructured morphology renders magnetite a material of strategic importance in various high-value domains. In biomedical engineering, it is utilized in targeted drug delivery systems, magnetic resonance imaging (MRI) contrast agents, and hyperthermia-based cancer therapies. Within environmental engineering, magnetite nanoparticles function as efficient adsorbents for heavy metal remediation and contaminant removal in water treatment systems. Furthermore, in the field of energy storage and conversion, magnetite serves as a viable anode material in lithium-ion batteries and other electrochemical devices.
The pronounced magnetic capacity of Fe₃O₄, combined with its chemical stability and tunable surface characteristics, underscores its critical relevance to sectors such as electronics manufacturing, magnetic data storage, advanced catalysis, and next-generation nanotechnology development.
Black Iron Oxide and Other Iron Oxide Color Varieties
While magnetite (Fe₃O₄) is well known for its deep black hue, other iron oxide compounds exhibit distinct color profiles:
Hematite (Fe₂O₃) – Exhibits a reddish-brown tone and is extensively used as a natural pigment in paints, ceramics, and coatings.
Maghemite (γ-Fe₂O₃) – Characterized by a warm brown shade, produced through controlled thermal or chemical processes, and also valued as a pigment.
These variations in color stem from differences in crystal structure and oxidation states. Thanks to their stability, non-toxicity, and strong tinting power, iron oxides play a key role in the paint, coatings, ceramics, and construction materials industries.
Industrial Applications and Market Utilization of Black Iron Oxide
Black iron oxide (Fe₃O₄, magnetite) represents one of the most versatile inorganic materials, with a wide spectrum of industrial and scientific applications. Its unique magnetic, electrochemical, and pigment properties have established it as an essential raw material across multiple sectors including biomedicine, environmental engineering, energy storage, electronics, and surface coatings.
1. Biomedical Applications: Magnetite nanoparticles are increasingly utilized in advanced medical imaging (MRI) as contrast agents due to their superparamagnetic behavior. In oncology, they play a crucial role in magnetic hyperthermia therapy, where localized heating induced by an external magnetic field assists in the selective destruction of cancer cells. Additionally, their ability to be externally guided makes them highly valuable in targeted drug delivery and biosensing.
2. Environmental Engineering and Water Treatment: In the field of water purification and environmental remediation, black iron oxide nanoparticles act as highly efficient adsorbents for toxic heavy metals, arsenic, and other organic pollutants. Their magnetic separation capability allows for rapid recovery and recycling of the adsorbent material, making them a sustainable solution for wastewater treatment technologies.
3. Electronics and Energy Storage: In the electronics and energy sector, magnetite serves as a promising anode material in lithium-ion batteries, contributing to enhanced durability and electrochemical capacity. Furthermore, its integration into supercapacitors and energy storage systems supports the development of renewable and sustainable energy technologies.
4. Pigments and Surface Coatings: Synthetic black iron oxide is extensively employed as a durable pigment in paints, inks, ceramics, and polymer-based coatings. Compared to non-magnetic alternatives, magnetite pigments exhibit higher stability, weather resistance, and UV durability, making them the preferred choice in industrial coatings and protective materials.
Comprehensive List of Application Areas of Iron Oxide Powders
Textiles and Dyes
Abrasives and Polishing Materials
Agricultural Fertilizers and Micronutrients
Automotive Brake Systems and Friction Materials
Cosmetics and Jewelry Manufacturing
Dense Media Separation in Mining
Casting and Foundry Molds
Heavy Aggregates and Ballast Materials
Magnetic Adsorbents for Environmental Use
Smart Fluids and Magnetorheological Applications
Advanced Biomedical Devices
Mineral Fillers in Polymers
Industrial Pipe Coatings
Power Plant Emission Control Systems
Protective Shielding and Radiation Refraction
Solar Energy Conversion (Photovoltaics)
Sports Equipment and High-Performance Materials
Wastewater Treatment Plants
General Water Purification Technologies
Commercial Supply by EUNANO
At EUNANO, we provide high-purity black nanocomposite iron oxide powder with tailored magnetite properties, designed to meet the requirements of diverse industries worldwide. Our material is optimized for industrial production, research, and advanced technological applications.
If your company operates in biomedical, energy, chemical, coating, or environmental sectors, we invite you to contact us to source premium-grade iron oxide powder or request further technical specifications.
+90 544 317 0526
Magnetite (Fe₃O₄) Production Methods
Magnetite (Fe₃O₄) is a critical iron oxide compound widely utilized in biomedical engineering, environmental remediation, energy storage, and advanced coatings. The production method directly influences its particle size, crystallinity, purity, and magnetic performance, which are crucial parameters for both laboratory research and industrial-scale applications.
Laboratory-Scale Synthesis
In controlled laboratory environments, chemical co-precipitation techniques are frequently employed to obtain magnetite nanoparticles. Typically, ferrous (Fe²⁺) and ferric (Fe³⁺) salts are precipitated in an alkaline medium, yielding highly uniform Fe₃O₄ structures. This approach enables precise control over nanoparticle morphology and superparamagnetic properties, making it ideal for applications in MRI contrast agents, hyperthermia therapies, and targeted drug delivery systems.
Industrial-Scale Production
For large-scale manufacturing, magnetite is commonly synthesized through the reduction of hematite (Fe₂O₃) or other iron oxides using hydrogen (H₂) or carbon monoxide (CO) as reducing agents. This process facilitates the production of Fe₃O₄ with adjustable particle size distribution and enhanced magnetic saturation levels, tailored to meet the needs of energy storage technologies, lithium-ion battery anodes, and heavy industry applications.
Significance Across Industries
Due to its exceptional magnetic, electrical, and catalytic properties, magnetite has become indispensable in multiple sectors:
Biomedical Applications – targeted therapies, diagnostic imaging, and biocompatible nanomaterials
Environmental Technologies – wastewater purification, heavy metal adsorption, and pollution control
Electronics & Energy Storage – high-capacity anodes, supercapacitors, and magnetic data storage systems
Pigments & Coatings – durable black pigment in ceramics, paints, and corrosion-resistant coatings
Conclusion
Magnetite (Fe₃O₄) production methods range from precise laboratory-scale synthesis to high-capacity industrial processes, each offering unique advantages depending on the application. With the ability to tailor its nanostructure and performance characteristics, Fe₃O₄ continues to be a strategic raw material in nanotechnology, green energy, and advanced manufacturing sectors.
EUNANO provides high-purity black iron oxide (Fe₃O₄) powders engineered for these diverse applications. Contact us today to obtain tailored solutions for your industrial or research needs.
+90 544 317 0526
Nanocomposite Iron Oxide Powder (Fe₃O₄): Structure, Characteristics, and Global Industrial Applications
With the rapid progress of nanotechnology, iron oxide nanomaterials have become an essential resource in high-tech and industrial production processes. Among these, nanocomposite iron oxide powder (Fe₃O₄, magnetite) has gained significant recognition due to its unique magnetic properties, nanoscale advantages, and multifunctional applications. This article provides an in-depth analysis of the definition, crystal structure, physicochemical properties, application spectrum, and international logistics of Fe₃O₄ nanocomposites.
What is Nanocomposite Iron Oxide Powder?
Nanocomposite iron oxide powder is a nanoscale material derived from magnetite (Fe₃O₄), a naturally occurring mineral containing both ferrous (Fe²⁺) and ferric (Fe³⁺) ions. With an average particle size of 20–40 nm, the powder exhibits high surface-to-volume ratio, superior ferromagnetism, and exceptional chemical durability. These nanoscale attributes significantly improve its performance in advanced technologies and industrial operations.
Chemical Composition and Crystal Structure
Formula: Fe₃O₄
CAS Registry Number: 1317-61-9
Crystal System:: Spinel-type cubic structure
Fe₃O₄ nanocomposites are stable magnetic oxides consisting of mixed valence states (Fe²⁺/Fe³⁺). Although magnetite is naturally available, synthetic nanoscale Fe₃O₄ is widely preferred for commercial, biomedical, and electronic applications due to its controlled morphology and enhanced reactivity.
Understanding the Concept of Nanocomposites
The term “nanocomposite” describes engineered materials at the nanometer scale (1–100 nm). Compared to conventional bulk materials, these substances offer larger specific surface area, improved catalytic efficiency, tunable magnetic behavior, and enhanced conductivity. As a result, Fe₃O₄ nanocomposites are increasingly integrated into catalysis, targeted drug delivery, energy storage devices, and advanced electronics.
Physical and Functional Properties
Appearance: Black, graphite-like powder
Purity: Approx. 95%
Magnetic Behavior: Ferromagnetic (permanent magnetism)
Particle Size Distribution: 20 nm or 30–40 nm options
Comparison: Fe₃O₄ vs. Fe₂O₃
Fe₃O₄ (Magnetite): Exhibits ferromagnetic properties and contains both Fe²⁺ and Fe³⁺ ions.
Fe₂O₃ (Hematite): Displays paramagnetic characteristics and contains only Fe³⁺ ions.
While Fe₃O₄ is indispensable in magnetic separation, ferrofluids, and biomedical technologies, Fe₂O₃ is primarily utilized in pigments, coatings, and corrosion-resistant applications.
Industrial and Commercial Applications
Nanocomposite iron oxide (Fe₃O₄) powder is applied across multiple high-value industries, including:
Environmental Engineering: Wastewater treatment, removal of toxic heavy metals and organic pollutants
Magnetic Fluids: Ferrofluids for mechanical and electronic systems
Catalysis: Catalyst support in chemical synthesis and energy conversion
Biomedical Engineering: Targeted drug delivery, MRI contrast agents, magnetic hyperthermia for cancer therapy
Energy Systems: Rechargeable batteries, supercapacitors, and hydrogen storage technologies
Data and Material Sciences: Magnetic separation, sensors, and high-density data storage
Supply Chain and Logistics
Global manufacturers, including Turkey-based suppliers such as EUNANO, provide high-purity nanocomposite Fe₃O₄ powders for both domestic and international markets. Packaging solutions range from 100 g laboratory-scale samples to 25 kg industrial bulk shipments, ensuring compatibility with academic research, pilot projects, and large-scale commercial operations.
Nanocomposite Powder Summary Table
| Feature |
Detail |
| Chemical Formula |
Fe₃O₄ (Magnetite) |
| Particle Size |
20 nm or 30–40 nm |
| Purity |
Approximately 95% |
| Colour |
Black (Graphite) |
| Magnetism |
Permanent / Ferromagnetic |
| Areas of Use |
Purification, catalysis, medical, electronics, etc. |
| CAS Number |
1317‑61‑9 |
| Transfer |
Turkiye + International |
Conclusion
Due to its outstanding magnetic, structural, and chemical characteristics, nanocomposite iron oxide powder (Fe₃O₄) is a strategic material across industrial, biomedical, and energy-related fields. With the ongoing advancements in nanotechnology, global trade, and material sciences, the demand for Fe₃O₄ nanocomposites is expected to grow significantly in the coming decades.
Nanocomposite Prices
The Strategic Role of Iron Oxide Powder in Paint Manufacturing
Iron oxide powders occupy a pivotal position in the global paint and coatings industry due to their broad chromatic spectrum, high durability, and cost efficiency. Widely applied as inorganic pigments, iron oxides are available both in naturally occurring shades—such as red, yellow, and black—and in synthetically engineered forms. Their inorganic crystalline structure ensures strong resistance against UV radiation, chemical degradation, and mechanical abrasion. Consequently, iron oxide powders are extensively utilized in the formulation of interior and exterior paints, industrial coatings, and protective varnishes, where they impart long-lasting and stable coloration.
Application in Paint Manufacturing
In modern paint production processes, iron oxide pigments are incorporated through a sequence of highly controlled operations that ensure particle uniformity and dispersion quality. Initially, pigments are blended with binders, solvents, and functional additives to achieve a homogeneous matrix. Since iron oxide pigments exhibit low solubility in aqueous and solvent-based systems, they significantly enhance color permanence and coating longevity.
The manufacturing process generally follows four core stages:
1. Mixing: Iron oxide powders are evenly distributed with complementary ingredients using industrial-grade mixers.
2. Grinding (Milling): The blended slurry undergoes fine grinding, reducing particle size to optimize opacity, color strength, and surface coverage.
3. Filtration: Oversized particles are removed, ensuring the pigment achieves a refined consistency suitable for high-performance paints.
4. Packaging & Storage: The final pigment-dispersed paint is packaged under controlled conditions, prepared for distribution to end-users.
Iron oxide pigments are applied across a diverse array of paints, including concrete coatings, wood preservatives, metal coatings, automotive paints, and traffic marking paints. Their weatherproof nature and aesthetic versatility make them particularly valuable in architectural façades and urban infrastructure projects.
Utilization in United States, Turkiye, and the Global Market
In United States, Turkiye, and international markets, iron oxide pigments play a fundamental role in several high-demand sectors such as construction paints, industrial coatings, and automotive finishes.
In Turkiye, iron oxide powders are extensively used in the construction and concrete industries, where they provide natural color tones and decorative finishes in structural coatings.
In United States, demand is largely driven by infrastructure development and industrial applications, with significant consumption in road marking paints and prefabricated building materials.
Globally, iron oxide pigments are integrated into multiple industries:
Construction Sector: Road and pavement coatings, architectural paints, and cementitious coatings.
Wood & Furniture Sector: Natural-toned wood stains and protective coatings.
Automotive Sector: High-performance automotive paints, primers, and corrosion-resistant coatings.
Industrial Applications: Heavy-duty paints that shield equipment and machinery from chemical and environmental exposure.
Beyond their coloring function, iron oxide pigments provide functional enhancements, such as improved UV resistance, hydrophobic properties, corrosion protection, and extended material lifespan. This ensures that products and structures retain both aesthetic appeal and mechanical integrity over time.
The annual global consumption of iron oxide pigments is substantial, with United States, Turkiye, and other key producing nations accounting for a significant market share. This positions iron oxide powders as a strategic raw material within the international coatings supply chain.
Magnetite-Based Iron Oxides (Fe₃O₄) in Advanced Coatings
Among various grades, magnetite black iron oxide (Fe₃O₄) holds particular importance due to its chemical stability, deep coloration, and nanoscale adaptability. With standardized classification under CAS No. 1317-61-9, Fe₃O₄ powder is available in 20 nm and 30–40 nm particle sizes, making it highly suitable for nanotechnology-driven coating systems.
Through suppliers such as EUNANO, industries can access high-purity magnetite iron oxide powders, ensuring compliance with international quality and trade standards. These materials provide a competitive edge in producing advanced construction coatings, industrial paints, and automotive applications, where performance, durability, and sustainability are critical.
Iron Oxide Prices
Fe3O4 Powder Analysis Reports
The quality, purity, and particle size distribution of magnetite iron oxide (Fe₃O₄) powders are crucial parameters for their industrial applications. Comprehensive analysis reports provide transparency to end-users, ensuring reliability and consistency of the supplied material. Within the scope of nanomaterial production and trade, such reports are essential for confirming compliance with international standards and customer requirements.
a) Analysis of Black Magnetite Iron (II, III) Oxide Powder with 97% Purity and 20 nm Particle Size
The 97% pure Fe₃O₄ nanopowder with an average 20 nm particle size is widely demanded in advanced applications, including magnetic storage systems, biomedical research, and high-performance coatings.
Check out analysis and product safety reports:
1. Material Safety Data Sheet
(20 nm - Purity: 97%)
2. Micro Particle
(20 nm - Purity: 97%)
3. Certificate of Analysis
(20 nm - Purity: 97%)
The analysis reports typically cover:
Chemical Composition: Verification of Fe²⁺/Fe³⁺ ratios and absence of undesired impurities.
Particle Size Distribution: Dynamic light scattering (DLS) and electron microscopy confirm the narrow distribution around 20 nm.
Magnetic Properties: Measurement of saturation magnetization (Ms), coercivity (Hc), and remanence (Mr).
Structural Characterization: XRD analysis validating the crystalline phase of Fe₃O₄.
Surface Area: BET surface area measurement, important for catalytic and adsorption applications.
These parameters guarantee that the powder provides high stability, superior dispersibility, and excellent performance in target industries.
b) Reports on Black Magnetite Nanocomposite Iron Oxide Powder with 95% Purity and 30–40 nm Particle Size
The nanocomposite variant of black iron oxide with 95% purity and 30–40 nm particle size is particularly utilized in construction materials, paints, polymers, and electromagnetic shielding applications.
Check out the product's analysis and safety reports:
1. Material Safety Data Sheet
(30-40 nm - Purity: 95%)
2. Micro Particle
(30-40 nm - Purity: 95%)
3. Certificate of Analysis
(30-40 nm - Purity: 95%)
The analysis reports of this product include:
Morphological Studies: SEM and TEM imaging, showing uniform particle aggregation within the nanocomposite matrix.
Purity Verification: Elemental analysis (EDX, ICP-OES) ensuring 95% purity and controlled levels of trace metals.
Thermal Stability: Thermogravimetric analysis (TGA) indicating decomposition resistance under various conditions.
Mechanical Compatibility: Rheological and dispersion tests for compatibility in paints, resins, and coatings.
This product is preferred for cost-effective large-scale applications, where slightly lower purity does not compromise performance.
About us
EUNANO is one of the pioneering nanotechnology enterprises in Turkey, dedicated to the production of the natural nanomagnetic mineral magnetite iron oxide (Fe₃O₄). With a strong focus on research, development, and large-scale manufacturing, our company provides high-quality Fe₃O₄ powder that stands out for its unique magnetic and physicochemical properties. These characteristics make it an indispensable material across various industries, including chemicals, automotive, biomedical, environmental technologies, textiles, and advanced coatings.
EUNANO conducts its commercial operations under the legal entity Revak Engineering Ltd., ensuring transparency, reliability, and compliance with international standards. For complete details about our corporate structure, please visit our Contact page.
When purchasing nano Fe₃O₄ iron oxide, all listed prices are inclusive of VAT. Orders placed on business days between 09:00 – 16:00 are shipped on the same day, ensuring fast and reliable delivery.
We supply magnetite iron oxide Fe₃O₄ powder in its natural, unmodified form as displayed in the product images. Additionally, you can explore authentic videos and photographs of our original Fe₃O₄ packaging and shipment process through our official YouTube channel.
Frequently Asked Questions (FAQ) About Iron Oxides
1. What is iron oxide powder with the formula Fe₃O₄?
Fe₃O₄ is a natural iron oxide mineral known as magnetite. It is black in color, has strong magnetic properties, and is widely used in industrial, scientific, and technological applications.
2. In what areas is iron oxide powder used?
Fe₃O₄ powder is applied in magnetic fluids, catalysts, biomedical carrier systems, electronic devices, battery production, and water treatment technologies.
3. What sizes of iron oxide powders are available?
We offer 20 nm and 30–40 nm particle sizes. For custom specifications, you can contact our sales team.
4. What is a CAS number?
The CAS number of Fe₃O₄ is 1317-61-9. It serves as the global identification code for chemical substances.
5. Do you ship iron oxide powders abroad?
Yes. International deliveries are available from our warehouses in Turkiye and United States. We export to Europe and the Middle East. For logistics and customs details, please request a quote.
6. What is the difference between Fe₃O₄ and other oxides (Fe₂O₃, FeO)?
Magnetite (Fe₃O₄): Strongly magnetic, contains Fe²⁺ and Fe³⁺.
Hematite (Fe₂O₃): Paramagnetic, often used in pigments and coatings.
Wüstite (FeO): Less stable, with limited applications.
7. What is iron powder?
Iron powder is metallic iron ground into micron or nanometer sizes. It comes in atomized, sponge iron, reduced, or electrolytic forms.
8. Where is iron powder used?
Iron powder is used in powder metallurgy, automotive parts, welding electrodes, magnet production, pyrotechnics, and water treatment.
9. Is iron powder magnetic?
Yes. Particularly Fe₃O₄ (magnetite) powder and pure iron powder exhibit strong magnetism, making them ideal for electromagnetic devices.
10. Is iron powder flammable?
Yes. Fine iron powder may ignite in contact with oxygen. Storage requires compliance with ATEX and safety standards.
11. Difference between iron powder and iron oxide powder?
Iron powder: Pure metallic iron, high conductivity and magnetism.
Iron oxide powder: Oxidized form (Fe₂O₃ or Fe₃O₄), used in pigments, catalysts, and nanomaterials.
12. What is nanocomposite iron oxide powder?
It is black Fe₃O₄ powder in 20–40 nm sizes, showing ferromagnetic properties and high surface area for superior performance.
13. What chemical formula defines a nanocomposite?
Fe₃O₄ (magnetite), containing both Fe²⁺ and Fe³⁺ ions.
14. Applications of Fe₃O₄ nanocomposite powder?
Used in wastewater treatment, ferrofluids, catalysis, biomedical delivery systems, electronics, magnetic recording, and batteries.
15. What particle sizes does nanocomposite Fe₃O₄ come in?
Generally 20 nm or 30–40 nm, offering higher surface reactivity.
16. What are the purity and color properties?
Purity: ~95%
Color: Graphite black
Type: Magnetite (Fe₃O₄)
17. Is shipping available for Fe₃O₄ nanocomposites?
Yes. Exports are available from Turkiye to Europe and Middle East markets.
18. What colors do iron oxide pigments come in?
Red (Fe₂O₃), yellow (α-FeOOH), brown, and black (Fe₃O₄).
19. Where are colored iron oxides used?
In paints, ceramics, construction chemicals, asphalt, plastics, rubber, and printing inks.
20. Difference between natural and synthetic pigments?
Natural oxides: Irregular particle distribution.
Synthetic oxides: Uniform color, finer particle size, higher purity → preferred in high-performance industries.
21. Are iron oxide pigments UV-resistant?
Yes. They have excellent lightfastness and weather resistance, widely used in exterior paints, tiles, and concrete coatings.
22. Can iron oxide powders be used in food & cosmetics?
Only specific grades (e.g. E172-certified pigments) are permitted in cosmetics (lipstick, foundation) and food applications.
23. Can I return the iron oxide powder purchased from EUNANO?
No. Due to chemical safety regulations, returns are not accepted. Please request a sample order before large purchases.
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