Iron oxide pigments are reliable inorganic pigments valued for strong colour, durability, chemical stability, and weather resistance. Modern production ensures consistent quality, uniform particle size, and even dispersion.
These pigments are used in construction materials, paints, coatings, plastics, rubber, ceramics, and various other industrial products.
Iron Oxide Black
CI Number: IOB330
Applications: Plastics & Rubber • Ceramics & Tiles • Asphalt & Industrial Flooring • Paints & Coatings • Construction Materials
Iron Oxide Red
CI Number: IO130
Applications: Paints & Coatings • Construction Materials • Plastics & Rubber • Ceramics & Bricks • Asphalt & Flooring
Iron Oxide Orange
CI Number: IOO960
Applications: Paper Coloring • Plastics Coloring • Paints & Coatings • Construction Materials
Iron Oxide Yellow
CI Number: IOY313
Applications: Plastics Coloring • Paints & Coatings • Construction Materials • Inks & Wood Stains
| Allorox Technical Data Sheet | Properties | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Grades | Colour Index | Mass Tone | Reduced tone pigment: Tio2 1:10 | Fe₂O₃ Content (%) | Water Soluble Content | Sieve Residue | Oil Absorption | Bulk Density | Moisture Content | pH DIN ISO 787/9 | Tinting Strength (%) | Particle Shape |
| Allorox Red Grades | ||||||||||||
| 101 | PR 101 | 96–99 | 0.5 | 0.4 | 15–20 | 0.9–1.2 | 1.0 | 4–8 | 97–103 | Spherical | ||
| 129 | PR 101 | 96–99 | 0.5 | 0.4 | 15–20 | 0.9–1.2 | 1.0 | 4–8 | 97–103 | Spherical | ||
| 110 | PR 101 | 96–99 | 0.5 | 0.4 | 15–20 | 0.9–1.2 | 1.0 | 4–8 | 97–103 | Spherical | ||
| 120 | PR 101 | 96–99 | 0.5 | 0.4 | 15–20 | 0.9–1.2 | 1.0 | 4–8 | 97–103 | Spherical | ||
| 130 E | PR 101 | 96–99 | 0.5 | 0.4 | 15–20 | 0.9–1.2 | 1.0 | 4–8 | 97–103 | Spherical | ||
| 445 | PR 101 | 96–99 | 0.5 | 0.4 | 15–20 | 0.9–1.2 | 1.0 | 4–8 | 97–103 | Spherical | ||
| 130 A | PR 101 | 96–99 | 0.5 | 0.4 | 15–20 | 0.9–1.2 | 1.0 | 4–8 | 97–103 | Spherical | ||
| 130 | PR 101 | 96–99 | 0.5 | 0.4 | 15–20 | 0.9–1.2 | 1.0 | 4–8 | 97–103 | Spherical | ||
| 3097 | PR 101 | 96–99 | 0.5 | 0.4 | 15–20 | 0.9–1.2 | 1.0 | 4–8 | 97–103 | Spherical | ||
| 136 | PR 101 | 96–99 | 0.5 | 0.4 | 15–20 | 0.9–1.2 | 1.0 | 4–8 | 97–103 | Spherical | ||
| 8097 | PR 101 | 96–99 | 0.5 | 0.4 | 15–20 | 0.9–1.2 | 1.0 | 4–8 | 97–103 | Spherical | ||
| 190 | PR 101 | 96–99 | 0.5 | 0.4 | 15–20 | 0.9–1.2 | 1.0 | 4–8 | 97–103 | Spherical | ||
| Allorox Yellow Grades | ||||||||||||
| 910 | PY 42 | 86–89 | 0.5 | 0.4 | 30–40 | 0.4–0.7 | 1.0 | 4–8 | 97–100 | Acicular | ||
| 920 | PY 42 | 86–89 | 0.5 | 0.4 | 30–40 | 0.4–0.7 | 1.0 | 4–8 | 97–100 | Acicular | ||
| 313 | PY 42 | 86–89 | 0.5 | 0.4 | 30–40 | 0.4–0.7 | 1.0 | 4–8 | 97–100 | Acicular | ||
| Allorox Orange Grades | ||||||||||||
| 960 | PR 101 PY 42 | 90–91 | 0.5 | 0.4 | 22–30 | 0.4–0.8 | 1.0 | 4–8 | 95–105 | Irregular | ||
Iron oxide pigments hold their colour outdoors because the particles are chemically inert rather than photosensitive, so heat, UV light and weathering don’t break them down the way organic colourants often break down. That single trait explains why construction, paints and plastics all lean on them so heavily.
The stability comes straight from the chemistry. Iron oxides are naturally stable compounds, so they resist the fading and colour drift that dye-based colourants show under sun exposure or chemical stress. For a paver or a roofing tile that has to look the same after a full season outdoors, that stability isn’t optional.
You’ll find out where iron oxide pigments get used, which shades Alliance Organics manufactures under its Allorox range, and how to pick the right grade for your process before you commit to a bulk order.
Iron oxide pigments are used wherever colour has to survive heat, sunlight or repeated processing stress. Construction and exterior coatings rely on them the most.
Alliance Organics controls particle size and dispersion tightly across its Allorox range, which matters more than most buyers expect. Streaking or patchy colour in cured concrete usually comes from uneven particle distribution during processing, not a flaw in the pigment itself.
Main application areas:
Iron oxide pigments outlast organic alternatives wherever the end product faces outdoor exposure or repeated stress.
Alliance Organics manufactures four core shades under its Allorox range: black, red, orange and yellow, each built for a specific balance of strength and application fit.
Pigment | CI Number | Typical Applications |
Iron Oxide Black | IOB330 | Plastics, ceramics, asphalt, coatings, construction |
Iron Oxide Red | IO130 | Coatings, construction, plastics, bricks, flooring |
Iron Oxide Orange | IOO960 | Paper, plastics, coatings, construction |
Iron Oxide Yellow | IOY313 | Plastics, coatings, construction, inks and wood stains |
Red grades typically run 96 to 99% Fe2O3 content with a spherical particle shape, while the yellow grade sits closer to 86 to 89% with an acicular, needle-like structure that changes how it disperses.
Each Allorox grade ships with documented iron oxide content, tinting strength and particle data, so batch-to-batch consistency isn’t a guessing game.
Match the grade to your processing method first, then to the shade you need. A pigment that disperses well in water-based paint can behave very differently in an extrusion line.
Iron oxide pigments earn their place in construction, coatings and plastics because they hold colour under conditions that wear down most alternatives.
Key takeaways:
Need technical data sheets or a sample batch for your application? Reach out to Alliance Organics directly.
Iron oxide pigments are synthetic compounds based on Fe2O3, engineered for controlled particle size and colour strength rather than mined directly, which gives them more predictable performance than natural ochres.
Yes. They’re chemically stable and don’t leach or react under normal environmental conditions, which is why they’re standard across concrete, tiles and coatings.
Iron oxide red carries a higher Fe2O3 content with a spherical particle shape, while iron oxide yellow has a lower Fe2O3 share and an acicular structure, which changes how each one disperses.
Yes, all four Allorox grades from Alliance Organics are formulated for plastics and rubber colouring, alongside paints, construction and ceramics.
No. Their chemical stability resists UV-driven fading, which is exactly why they’re preferred for exterior paints, roofing and outdoor construction work.
