Black iron oxide powder
CAS:1317-61-9
Black iron oxide, with the chemical name ferric oxide (III), has the chemical formula Fe₃O₄. It is a mixed valence oxide of iron with a melting point of 1597℃. It is insoluble in water but soluble in acid solutions. It is a multifunctional material that combines strong magnetism, electrical conductivity, high hardness and chemical stability, pure black color and chemical stability.
Benefits of Black iron oxide powder
KOSNANO’s has anti-corrosion effects. For instance, the bluing of steel parts (also known as bluing and baking bluing) is achieved by the oxidation effect of alkaline oxidizing solutions, forming a layer of blue-black or deep blue Fe3O4 film on the surface of steel parts, which is used to enhance corrosion resistance, luster and aesthetics.
Specifications Available
What is black iron oxide powder used for?
Analytical & Electronic Applications
Serves as an analytical reagent and is widely used in pigment production and the electronics industry.Paints, Coatings & Construction
Acts as a pigment in watercolors, oil paints, and inks. In coatings, it is essential for formulating anti-rust paints and primers. It is also used to color artificial marble and cement flooring in the construction sector.Electrical & Battery Materials
Utilized in the electronics and telecom sectors to manufacture magnetic steel and as cathode plates in alkaline dry batteries. Additionally, it aids in flaw detection in steel components within the machinery industry.Surface Coloring & Finishing
Used in pigments and polishes for coloring surfaces of plastics, coatings, and construction materials.Multifunctional Industrial Applications
Extensively applied across metallurgy, electronics, and textiles—as a catalyst, polishing agent, ceramic and paint pigment, and as a colorant for glass.Advanced Ceramics & Ferrites
Integral to ceramic technologies, including nano-ceramics, composite ceramic substrates, and ferrite-based materials.UV Protection & Microwave Absorption
Used in formulating materials with anti-ultraviolet and microwave absorption capabilities.Magnetic Sealing & Recording
Leveraging the strong magnetic properties and deep black hue of nano Fe₃O₄, it’s used in magnetic recording media, high-gradient magnetic separators, microwave absorbers, specialty coatings, and electrostatic copier developers.