Granular iron oxide black is black granules with better fluidity and dispersibility. Due to it's regular forms, granular iron oxide black is recommended for automatic production line. The most popular grade is granular iron oxide black G330. It is widely used in cement, bricks, concrete lines, paints, coatings, plastic, paper.
Granular iron oxide black G330 is widely used in cement, bricks, concrete lines, paints, coatings, plastic, paper.
| Specification | Value |
| Appearance | Black granules |
| Content of Fe2O3, % | 90-95 |
| pH value | 4-9 |
| Shade | Close to std. |
| Oil Absorption, % | 15-25 |
| 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 | 0.8-1.3 |
| Density approx. g/cm3 | 4.5-5.0 |
| Predominant particle size, mm | 0.3-0.6 |
| Particle shape | Spherical |
