Titanium dioxid (TiO2) Appearance: black pellets or white slicese Density: 4.26 g/cm3 Vapor pressure: 1 Pa at 1780℃ 10 Pa at1930℃ Hardness(Mohs hardness): 6-7 Melting point: 1820℃ ?20℃ Solubility: non-soluble in water, slightly soluble in sulfuric acid and strong hydrochloric acid Transmittance scope: 400-12000nm Refractive index(500nm): 2.40 Vapour deposition condition: evaporated by electron gun, oxygen added Vapour deposition temp.: 2000-2200℃ Purity: >99.99% Applications: anti-reflection film, multi-layer film for laser lens, spectroscope, heat reflector, etc. Specs: 1-2mm 1-3mm We are able to produce products of all materials and specs according to customer's demand