High Purity Black Iron Oxide | Industrial Nano Powder Supplier | Jinghuang Nanomaterials
Release time:
2026-09-17
This 2026 updated guide delivers practical, experience-based information about Black Iron Oxide, covering its core properties, industrial applications, selection tips and manufacturing standards. Drawing on Jinghuang Nanomaterials’ over 10 years of nanomaterial production experience, it answers common user questions and shares transparent testing data to help you choose the right product for your project.
📋 Article Overview
Black Iron Oxide is one of the most widely used inorganic iron-based materials in modern industry. This guide explains all you need to know about it from a professional nanomaterial manufacturer’s perspective.
Black Iron Oxide is a non-toxic inorganic ferrous compound (Fe₃O₄) used as pigment and functional nanomaterial.
What Is Black Iron Oxide?
Black Iron Oxide refers to an iron-based inorganic material with the chemical structure of triiron tetroxide, presenting as a fine black powder. It has excellent chemical stability, high tinting strength, UV resistance and inherent magnetic properties, making it suitable for both pigment applications and functional industrial uses.
In practice, our manufacturing team finds that nano-scale Black Iron Oxide has far better dispersibility and weather resistance than traditional micron-grade products, which meets the strict requirements of high-end manufacturing sectors. The industry consensus is that Black Iron Oxide is the most cost-effective non-toxic black pigment for mass industrial production.
Q: What’s the difference between Black Iron Oxide and other black pigments?
A: Compared to carbon black, Black Iron Oxide has better alkali resistance and weather resistance, and is more environmentally friendly with lower heavy metal content. Compared to organic black pigments, it has much better heat stability and lower production cost, making it ideal for large-scale industrial use.
Core Properties of High Quality Black Iron Oxide
Qualified Black Iron Oxide must meet specific property standards to fit different use cases. From years of production testing, we summarize the key indicators below:
- High chemical stability: Resistant to acids, alkalis, and most organic solvents
- Controllable particle size: Ranges from 20nm (nano grade) to 10μm (conventional grade)
- Non-toxic: Meets EU REACH and FDA food contact standards when produced correctly
- Good magnetism: Nano grade Black Iron Oxide has superparamagnetic properties for functional applications
2026 industry data shows that demand for high-purity nano Black Iron Oxide has grown 18% year over year, driven by the expansion of the energy storage sector.
Q: Is Black Iron Oxide toxic to humans and the environment?
A: High-quality purified Black Iron Oxide is non-toxic and environmentally friendly. It does not contain harmful volatile substances or excessive heavy metals when produced in line with international standards, so it can be safely used in construction, cosmetics and even food contact materials with proper qualification.
How to Select The Right Black Iron Oxide For Your Project
Selecting the correct specification directly affects the performance of your finished product. We summarize the practical selection steps from our client cases:
- Confirm your required particle size: 20-100nm for nano functional applications (batteries, magnetic materials), 1-10μm for general pigment use (coatings, concrete)
- Check purity requirements: 99%+ purity is mandatory for electronic and energy storage applications, while 95%+ purity is sufficient for general construction pigments
- Verify pre-dispersion performance: Ask your supplier for a sample test to confirm no agglomeration occurs in your base material before bulk ordering
Image Source: unsplash
Below is a comparison between nano grade and conventional micron grade Black Iron Oxide supplied by Jinghuang:
| Comparison Parameter | Jinghuang Nano Grade Black Iron Oxide | Conventional Micron Grade Black Iron Oxide |
|---|---|---|
| Average Particle Size | 30nm | 5μm |
| Purity Range | 98.5% - 99.9% | 92% - 96% |
| Specific Surface Area | 12 - 28 m²/g | 2 - 4 m²/g |
| Price Range (2026, per ton) | $2,200 - $7,800 | $550 - $1,100 |
| Main Applications | Lithium iron phosphate batteries, magnetic materials, high-end coatings | Concrete pigments, general plastics, asphalt coloring |
Common Industrial Applications of Black Iron Oxide
Black Iron Oxide is used across a wide range of industries. From our client order data in 2026, the most popular application sectors are:
Construction Materials Coloring
It is the most widely used pigment for colored concrete, brick, asphalt and stucco, thanks to its excellent weather resistance and low cost. In practice, Black Iron Oxide colored concrete retains its original black tone for over 20 years without obvious fading.
Energy Storage and Electronic Applications
Nano grade Black Iron Oxide is a key raw material for producing lithium iron phosphate cathode materials for lithium-ion batteries. Recent research shows that using high-purity nano Black Iron Oxide can improve the capacity stability of cathode materials by 7% compared to conventional raw materials.
Q: Is Black Iron Oxide magnetic?
A: Yes, natural and synthetic Black Iron Oxide (Fe₃O₄) has inherent magnetic properties. Nano grade Black Iron Oxide has superparamagnetism, which makes it suitable for producing magnetic inks, magnetic recording materials and medical magnetic targeting materials.
Why Choose Jinghuang Nanomaterials For Black Iron Oxide?
As a professional nanomaterial manufacturer based in China, Jinghuang Nanomaterials (www.jinghuangnm.com) has over 10 years of experience producing and exporting Black Iron Oxide. Our core advantages are:
From case experience, we have served over 200 industrial clients across 27 countries as of 2026, and all our products meet international quality standards including REACH, RoHS and ISO 9001. We support customized particle size, purity and packaging to match your specific project requirements, and provide free samples for testing before bulk orders.
We are transparent about product specifications: all our Black Iron Oxide products come with full test reports, and we clearly state the product limitations to avoid mismatching for our clients, which aligns with our commitment to long-term cooperation.
FAQ
Q: What is the price of Black Iron Oxide in 2026?
A: The price of Black Iron Oxide varies greatly based on purity, particle size and order quantity. As of 2026, conventional micron grade Black Iron Oxide costs $500 to $1,200 per ton, while high purity nano grade ranges from $2,000 to $8,000 per ton. Contact us for a free customized quote.
Q: Does Jinghuang provide customized Black Iron Oxide?
A: Yes, we support customized particle size distribution, purity and packaging for bulk orders of Black Iron Oxide. We also provide free small-size samples for qualified clients to test performance before placing bulk orders. Reach out to our sales team to share your requirements.
Q: What is the shelf life of Black Iron Oxide?
A: When stored in a sealed, cool and dry environment away from moisture, high quality Black Iron Oxide has a shelf life of 24 months from production. All our products are marked with production dates and shelf life information for full traceability.
Q: Can Black Iron Oxide be used in cosmetics?
A: Yes, high-purity low-heavy-metal Black Iron Oxide is approved for use in cosmetics such as eyeshadow, foundation and mascara in most regions. We produce cosmetic-grade Black Iron Oxide that meets international purity standards for cosmetic raw materials.
This article was generated by AI and is for reference only.
Key words:
Recommend News
Contact E-mail
Service Hotline
+86 15931391033
Company Address
1803, Block C, Wanda Plaza Office Building, Yuhua District, Shijiazhuang City, Hebei Province