Iron Oxide Red

Iron Oxide Red is a common inorganic pigment, chemically composed of ferric oxide (Fe₂O₃), with stable physical and chemical properties, widely used in construction, coatings, ceramics, plastics, and rubber industries.

Basic Features

Chemical Formula: Fe₂O₃ (Iron(III) Oxide).

Color: Typically red-brown or brick red, there may be slight variations due to particle size and crystal type.

Stability:

High-temperature resistant (stable below 1200℃), lightfast, weather-resistant, acid and alkali resistant.

Water and organic solvent insoluble; non-toxic and environmentally friendly.

Form: Powdered, available through natural mineral (such as hematite) or chemical synthesis methods.

Preparation Method

Natural Extraction:

Hematite (natural Fe₂O₃) is obtained after crushing, purification, and calcination.

Chemical Synthesis:

Dry Process: Iron salts (such as ferric sulfate) are directly decomposed at high temperatures.

Bayer process: Recovery and utilization of steel pickling waste liquid for preparation.

Primary Applications

Building Materials:

Concrete, tiles, wall paints coloring agents (such as red brick color).

Paints and Coatings:

Offer durable red for metal rust-proof paint, outdoor coatings.

Plastics and rubbers:

Coloring and enhancing UV stability.

Ceramics and Glass:

Red or brown pigments in the glaze.

Other Applications:

Cosmetics (such as eyeshadows), polish agents, magnetic materials, etc.

Categories and Models

By purity: Industrial grade (90-95%), Pigment grade (96%+), High purity grade (99%+).

By hue: Yellowish red, Bluish red, etc. (Dependent on particle morphology and particle size).

Common Models: 130 (China Standard), PR101 (International Pigment Index).

Cautionary Notes

Avoid inhalation of dust; wear a protective mask.

Store in a dry environment to prevent caking.

Iron oxide red is an ideal choice for replacing organic red pigments due to its low cost, high stability, and safety. For more specific parameters (such as particle size, color difference), please provide further details on the application scenario for recommendations.