Iron oxide red

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

Basic Features

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

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

Stability:

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

Not soluble in water or organic solvents, non-toxic and environmentally friendly.

Form: Powdered, prepared by natural minerals (such as hematite) or chemical synthesis.

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, and wall paints with coloring agents (such as brick red).

Paints and Coatings:

Offer durable red for metal rustproof paint, outdoor coatings.

Plastics and Rubber:

Dyed and enhanced with UV stability.

Ceramics and Glass:

Red or brown pigments in the glaze.

Other Applications:

Cosmetics (such as eyeshadow), polish, magnetic materials, etc.

Categories & Models

Purity: Industrial Grade (90-95%), Pigment Grade (96%+), High Purity Grade (99%+).

By hue: Yellowish red, Bluish red, etc. (depending on particle shape and size).

Common Models: 130 (Chinese Standard), PR101 (International Color 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 a recommendation.