Brief Introduction:
Iron Oxide Red, also known as ferric oxide or red iron oxide, is a red or deep red powder with the chemical formula α-Fe2O3. It has a particle size range of 0.5 to 2 μm and a density of 5.24 g/cm³. It melts at 1565°C while decomposing. This pigment is non-toxic, insoluble in water, and exhibits excellent covering power and tinting strength, second only to carbon black. It also demonstrates superior light fastness, heat resistance, alkali resistance, and resistance to dilute acids and corrosive gases. It dissolves only when heated in concentrated acids.
| Property | Unit | Value | Test Method |
|---|---|---|---|
| Color Difference (ΔE) | - | ≤1.0 | - |
| Relative Tinting Strength | % | 95~105 | Titanium Dioxide Dilution (1:10) |
| Iron Content (as Fe2O3) | % | ≥95 | ISO 1248:2006 |
| Oil Absorption | g/100g | Agreed | ISO 787-5 |
| Residue on Sieve (325 mesh) | % | >0.1, ≤1 | ISO 787-7 |
| Water Solubles | % | ≤0.3 | ISO 787-3 |
| Volatile Matter at 105°C | % | ≤1.0 | ISO 787-2 |
| pH Value | - | Agreed | ISO 787-9 |
| Heat Loss at 1000°C/0.5h | % | ≤5 | ISO 55913 |
| Particle Shape | - | Spherical | - |
| Primary Particle Size (D50) | μm | 0.4-0.7 | - |
| Tap Density | g/cm³ | 0.8-1.1 | - |
| Density | g/cm³ | 4.8 | - |
| Light Fastness | Grade | 7-8 | - |
| Weather Resistance | Grade | 5 | - |
| Heat Resistance | °C | 600 | - |
Features:
– High covering power and tinting strength
– Excellent light fastness
– Superior heat resistance
– Good resistance to alkalis
– Resistant to dilute acids and corrosive gases
– Non-toxic and insoluble in water
– Stable under normal conditions
Applications:
– Used as a pigment in paints, coatings, and construction materials
– Applied in the coloring of plastics and rubber products
– Utilized in the manufacture of ceramics and glass
– Employed in the production of magnetic materials and polishing compounds
– Suitable for use in cosmetics and personal care products
– Incorporated in the coloring of paper and inks
Package and Storage:
Iron Oxide Red is typically packaged in 25 kg bags or as per customer requirements. It should be stored in a cool, dry place, away from moisture and direct sunlight. Ensure the packaging is tightly sealed to prevent contamination and maintain product quality. Proper handling and storage will ensure the longevity and effectiveness of the pigment.