| Properties: | |
| Half-life 46.3 days. Radiation: β and γ. | |
| Derivation: | |
| Pile irradiation of iron metal, giving a product that contains iron 55 impurity. Both iron 55 and iron 59 are produced pure in the cyclotron. Enriched samples of each are also available. | |
| Hazard: | |
| Toxic material. | |
| Use: | |
| Medicine, tracer element in biochemical and metallurgical research. | |