| Chemistry name: | lanthana; lanthanum trioxide; lanthanum sesquioxide |
| M Formula: | La2O3 |
| Properties: | |
| White or buff amorphous powder. D 6.51 (15C), mp 2315C, bp 4200C. Soluble in acids; insoluble in water. | |
| Derivation: | |
| Ignition of hydroxide or oxyacid (oxalate, sulfate nitrate, etc.), direct combustion of free metal (burns with brilliant, white light). | |
| Grade: | |
| Purities to 99.9+%. | |
| Use: | |
| Calcium lights, optical glass, technical ceramics, cores for carbon-arc electrodes, fluorescent phosphors, refractories. | |