CAS No.: 12645-50-0 Synonyms: Nickel zinc ferrite; Zinc nickel ferrite; Zinc nickel iron oxide Formula: Fe₄NiO₄Zn Formula Weight: 411.46 Linear Formula: NiZnFe₄O₄ Purity: ≥99% trace metals basis Density: 2.81 g/mL at 25 °C(lit.)