Iron Oxide Red
Iron Oxide Red is a common inorganic pigment, chemically composed of iron(III) oxide (Fe₂O₃), featuring stable physical and chemical properties, and widely used in construction, paints, 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 differences in particle size and crystal form.
Stability:
High-temperature resistant (stable below 1200°C), light-fast, weather-resistant, acid and alkali-resistant.
Water and organic solvent insoluble, non-toxic and environmentally friendly.
Form: Powdered, prepared either through natural mineral processing (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 pickling waste liquid for steel production.
Primary Applications
Building Materials:
Concrete, tiles, and wall paint colorants (such as red brick color).
Paints and Coatings:
Offer durable red for metal rustproof paint, outdoor coatings.
Plastics and Rubbers:
Color and enhance UV stability.
Ceramics and Glass:
Red or brown pigments in the glaze.
Other Applications:
Cosmetics (such as eyeshadows), polish agents, magnetic materials, etc.
Categories & Models
By purity: Industrial grade (90-95%), Pigment grade (96%+), High purity grade (99%+).
By hue: Yellowish red, Bluish red, etc. (depending on particle morphology and particle size).
Common Models: 130 (Chinese Standard), PR101 (International Pigment Index).
Cautionary Notes
Avoid inhaling dust; protective masks required.
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 the application scenario for further recommendation.
