Product Description
Iron oxides are produced through synthetic processes to achieve controlled composition, consistent color characteristics, and reliable product quality. Available in a range of colors, including red, yellow, brown, and black, iron oxide pigments are widely used in coatings, construction materials, plastics, and other industrial applications.
Iron oxide pigments may occur in anhydrous or hydrated forms, depending on their chemical composition and grade. Food-grade iron oxides are subject to stricter purity specifications and limits for certain metallic impurities than many conventional industrial grades. Their suitability for food-related applications depends on compliance with applicable regulatory requirements and product specifications.
Product Parameters
| Melting point | 1538°C |
| Density | 5.24 |
| Fp | >230 °F |
| Storage temp | 2-8°C |
| Solubility | It is soluble In Warm Hydrochloric Acid, Slightly Soluble in Sulfuric Acid. |
| Form | Pieces |
| Color | Black |
| Specific Gravity | 5.1～5.2 |
| PH | 3.7±0.3 |
| Water Solubility | INSOLUBLE |
| Crystal Structure | Corundum type |
| Crystal system | Three sides |
| Merck | 14,4028 |
| Space group | R3c |
| Lattice constant | a/nmb/nmc/nmα/oβ/oγ/oV/nm30.502590.502591.373590901200.3005 |
| Exposure limits | ACGIH: TWA 5 mg/m3 OSHA: TWA 10 mg/m3; TWA 15 mg/m3; TWA 5 mg/m3 NIOSH: IDLH 2500 mg/m3; TWA 5 mg/m3 |
| Stability | Stable. |
| CAS DataBase Reference | 1309-37-1(CAS DataBase Reference) |
| NIST Chemistry Reference | Iron(iii) oxide(1309-37-1) |
| IARC | 3 (Vol. 1, Sup 7) 1987 |
| EPA Substance Registry System | Ferric oxide (1309-37-1) |
Safety Information
| Hazard Codes | Xi |
| Risk Statements | 36/37/38 |
| Safety Statements | 26 |
| OEB | B |
| OEL | TWA: 5 mg/m3 |
| WGK Germany | - |
| RTECS | NO7400000 |
| TSCA | Yes |
| HS Code | 28211000 |
| Hazardous Substances Data | 1309-37-1(Hazardous Substances Data) |
| IDLA | 2,500 mg Fe/m3 |
Application Scenarios
Iron Oxide Red (Fe₂O₃) is a durable inorganic pigment widely used in construction materials, paints and coatings, plastics, and other industrial products. Its stable red coloration, weather resistance, and cost-effectiveness make it suitable for applications requiring long-lasting color performance.
Construction Materials and Concrete Products: Used in colored concrete, paving blocks, interlocking pavers, roof tiles, cement products, and precast concrete components to provide consistent red coloration for architectural and landscaping applications.
Paints and Coatings: Incorporated into architectural paints, industrial coatings, protective coatings, and decorative finishes to provide durable color and good resistance to light and weathering.
Plastics and Rubber: Used as a colorant in selected plastic and rubber formulations, including molded products, pipes, construction components, and other industrial goods, subject to processing temperature and compatibility requirements.
Ceramics and Building Materials: Applied in ceramic products, clay bricks, roof tiles, and other fired building materials to achieve red or reddish-brown shades, depending on the formulation and firing conditions.
Asphalt and Road Construction: Used in colored asphalt, paving materials, and other road-related products where red coloration is required for decorative or visual differentiation.
Printing Inks and Specialty Products: Suitable for selected pigment-based ink formulations, masterbatches, and specialty industrial products where its color properties and chemical stability meet the application requirements.
Why Choose Iron Oxide Red?
Iron Oxide Red offers dependable color performance, good lightfastness, weather resistance, and broad compatibility with many inorganic material systems. The appropriate grade should be selected according to the required shade, particle size, tinting strength, heat resistance, and formulation conditions.
