Research Article
Effect of Iron Oxide on the Protective Photochromism of African Padauk
Table 2
Basic information of the red iron oxide.
| Property | Transparent Red Iron Oxide |
| Molecular formula | α-Fe2O3 | Molecular weight | 159.69 g/mol | Appearance | Red powder | Melting point | 1565°C | Boiling point | 3414°C | Iron content | ≥ 95% (m/m) | 105°C Volatiles | ≤ 1% (m/m) | Hydrotrope | ≤ 0.3% (m/m) | Paste content | 50% | Particle size | 0.4 μm ~ 20 μm |
|
|