Silicon monoxide (SiO) Appearance: brown powderp or black pellets Density: 2.18g/cm3 Melting point: 1900℃ Solubility: non-soluble in water, soluble in hydrofluoric acid Transmittance scope: 400-8000nm Refractive index(550nm): 1.9 Vapour deposition condition: evaporated by electron gun Vapour deposition temp.: 1800℃ Purity: >99.99% Applications: anti-reflection film, interference filter, etc. Specs: < 1mm 1-2mm 1-3mm 1-5mm We are able to produce products of all materials and specs according to customer's demand