Cerium oxide (CeO2) Appearance: light yellow pellet Density: 7.30 g/cm3 Vapor pressure: 1 Pa at 1179℃ 10 Pa at1290℃ Hardness(Mohs hardness): 4 Melting point: 3400℃ Solubility: non-soluble in water Transmittance scope: 400-16000nm Refractive index(550nm): 2.00 Vapour deposition condition: thermal vapour deposition in Mo, W or Ta boat, or evaporated by electron gun with oxygen added Vapour deposition temp.: around 2000℃ Purity: >99.99% Applications: anti-reflection film, interference filter, etc. Specs: 0.4-1mm 1-3mm We are able to produce products of all materials and specs according to customer's demand