Iorn oxide
Chemical formula: Fe2O3
Physical properties

Type quantity: 160
Characters: Red-brown powder
Relative density (water = 1): 5.24
Melting point: 1565
Stability: Stable, soluble in hydrochloric acid, sulfuric acid is generated +3 price of iron salt.
Solubility: Insoluble in water, not reacting with water.
Oxidizing: (high temperature) are CO, H2, Al, C, Si, etc. Restoration.