Description
Buy high-quality premium iron oxide pigments widely used as durable color additives in concrete, cement, bricks, paving stones, roof tiles, asphalt, and architectural coatings. Among the most widely used pigments in the construction industry are Iron Oxide pigments, known for their exceptional weather resistance, UV stability, and long-term color durability.
Buy iron oxide powder
Manufacturers and construction material producers frequently buy construction pigments to produce decorative concrete, colored paving stones, roof tiles, precast concrete elements, and architectural finishes.
Physical Properties of Construction Pigments
| Property | Typical Specification |
|---|---|
| Appearance | Fine colored powder |
| Density | 2.3 – 5.2 g/cm³ |
| Solubility | Insoluble in water |
| Particle Size | 0.1 – 1.0 µm |
| Heat Stability | Up to 800–1000°C (depending on pigment) |
| Light Fastness | Excellent |
| Weather Resistance | Excellent |
| Oil Absorption | 15 – 25 g/100 g |
| pH | 5 – 7 |
Chemical Assay / Quality Specifications
| Parameter | Typical Specification |
|---|---|
| Pigment Purity | ≥ 95 – 98 % |
| Moisture Content | ≤ 1 % |
| Water Soluble Salts | ≤ 0.3 % |
| Residue on 325 Mesh | ≤ 0.3 % |
| Tinting Strength | 95 – 105 % |
| Heavy Metals | Within industrial safety limits |
Differences Between Construction Pigments
| Pigment | Chemical Composition | Color Tone | Key Advantage |
|---|---|---|---|
| Red Iron Oxide | Fe₂O₃ | Deep red | Strong UV stability |
| Yellow Iron Oxide | FeO(OH) | Bright yellow | Natural earth tone |
| Black Iron Oxide | Fe₃O₄ | Deep black | High opacity |
| Brown Iron Oxide | Mixed oxides | Brown | Natural architectural shades |
| Blue Pigment | Ultramarine | Blue | Decorative color effects |
| Green Pigment | Cr₂O₃ | Dark green | Extremely durable |
Where can you buy iron oxide powder
At China Chem Supplies, we supply a complete range of inorganic construction pigments designed for concrete and cement-based materials. These pigments disperse easily in construction mixtures and maintain stable coloration without affecting the structural integrity of the final product.
related product: Titanium Dioxide
Packaging & Compliance
- Moisture-barrier container
- Tamper-evident seal
- Controlled access storage
Transport compliance, where legally permitted, aligns with guidance from the International Air Transport Association (air freight) and the International Maritime Organization (sea freight).
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