Description Zirconium Oxide, Black Tablet, 99.99%, 120g For Research & Development Not for drug, human, animal, or food use Specifications: Melting Point (0C) – 2700 Evaporation Temperature (0C) - 2200 Density (g/cm3) - 4.9 Refractive Index - 1.95~2.05 Transmission Range (µm) - 0.25~9 Evaporation Source – E Application - Multilayer A.R. Coating, Hard & Durable CAS: 1314-23-4 FORMULA: ZrO2