Granular iron oxide brown is brown granules with better fluidity and dispersibility. Due to it's regular forms, granular iron oxide brown is recommended for automatic production line. The most popular grade is granular iron oxide brown G663. It is widely used in cement, bricks, concrete lines, paints, coatings, plastic, paper and building materials.
Granular iron oxide brown G663 is widely used in cement, bricks, concrete lines, paints, coatings, plastic, papers and building materials.
| Specification | Value |
| Appearance | Brown granules |
| Content of Fe2O3, % | 89-94 |
| pH value | 4-9 |
| Shade | Close to std. |
| Oil Absorption, % | 20-30 |
| Residue on 320 mesh, % | 0.5 max. |
| Water soluble, % | 2.5 max. |
| Volatile at 105℃ | --- |
| Tinting strength, % | 95-105 |
| DE (compared with std,) | 1.2 |
| Tamped apparent density, g/cm3 | 1.0-1.4 |
| Density approx. g/cm3 | 4.8 |
| Predominant particle size, mm | 0.3-0.6 |
| Particle shape | Spherical |
