All Photos(5)



Iron(II,III) oxide

nanopowder, 50-100 nm particle size (SEM), 97% trace metals basis

Empirical Formula (Hill Notation):
CAS Number:
Molecular Weight:
EC Number:
MDL number:
PubChem Substance ID:

Quality Level


97% trace metals basis



particle size

50-100 nm (SEM)

surface area

BET surf. area 6-8 m2/g (estimated)


1538 °C (lit.)


4.8-5.1 g/mL at 25 °C (lit.)

bulk density

0.84 g/mL


battery manufacturing

SMILES string




InChI key


Looking for similar products? Visit Product Comparison Guide


Iron(II,III) oxide (Fe3O4) can be used as a heterogeneous catalyst for the Fenton type oxidation of rhodamine B. It can be used as an anode material for the fabrication of lithium-ion batteries. Fe3O4 can also be utilized in the catalysis of the oxygen reduction reaction (ORR) in the anion exchange membrane fuel cell.


25, 100, 250 g in glass bottle

Analysis Note

XRD image is representative only; it is not lot specific

Storage Class Code

11 - Combustible Solids



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

  1. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  2. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

  3. Is Product 637106, Iron(II,III) oxide, stabilized (coated)?

    No, product 637106 has not been coated on the surface per the supplier.

  4. What is the particle sizeof Product 637106, Iron(II,III) oxide?

    Average particle sizes are 50-100 nm.

  5. How can the nanopowder Iron(II,III) oxide, Product 637106, be dispersed in an aqueous solution?

    1. It is recommended to use a neutral buffered solution (approximately pH 7). The pH of the solution is an important factor in achieving a monodispersion of the nanopowder.2. Probe-type ultrasonication is strongly recommended by the manufacturer.3. If the material is not well dispersed by ultrasonication in a neutral buffer, add a surfactant. This will wet the nanoparticle surface. Since the particles are small (less than 50 nm), they have a high surface area to volume ratio. They can therefore absorb gases such as oxygen or carbon dioxide from the air, which would decrease the dispersity of the particles. Degassing the buffer before use may help to eliminate the formation of gas bubbles.

  6. How do I find price and availability?

    There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers.

  7. What is the Department of Transportation shipping information for this product?

    Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product. 

  8. My question is not addressed here, how can I contact Technical Service for assistance?

    Ask a Scientist here.

Longitudinal 3He and proton imaging of magnetite biodistribution in a rat model of instilled nanoparticles.
Al Faraj A, et al.
Magnetic Resonance in Chemistry, 59(6), 1298-1303 (2008)
A conceptually new type of bio-hybrid scaffold for bone regeneration.
Tampieri A, et al.
Nanotechnology, 22(1) (2011)
Magnetomotive nanoparticle transducers for optical rheology of viscoelastic materials.
Crecea V, et al.
Optics Express, 17(25), 23114-23122 (2009)
Fenton-like oxidation of Rhodamine B in the presence of two types of iron (II, III) oxide
Xue X, et al.
Journal of Hazardous Materials, 166(1), 407-414 (2009)
Spark Plasma Sintered HA-Fe3O4-Based Multifunctional Magnetic Biocomposites.
Bajpai I, et al.
Journal of the American Ceramic Society. American Ceramic Society, 96(7), 2100-2108 (2013)


Synthesis of Magnetic Nanoparticles for Biosensing

Professor Randal Lee (University of Houston, USA) discusses design considerations for iron oxide magnetic nanospheres and nanocubes used for biosensing, including synthetic procedures, size, and shape. The effects of these variables are discussed for various volumetric-based and surface-based detection schemes.

Chemical Synthesis of Monodisperse Magnetic Nanoparticles

Magnetic nanoparticles have attracted tremendous attention due to their novel properties and their potential applications in magnetic recording, magnetic energy storage and biomedicine.

Self-Propagating Reactions Induced by Mechanical Alloying

An article concerning self-propagating reactions induced by mechanical alloying, presented by

Nanofluids for Biomedical Applications

Currently, magnetic nanoparticles (MNPs) are attracting a lot of attention because of the possibility of many novel applications, especially in biomedical research.

See All

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service