Silicon dioxide

Appearance：colorless transparent particles

Density:2.18grams per cubic centimeter

Melting point:1900℃

Solubility: insoluble in water,soluble in hydrofluoric acid

Light transmission range:400-8000nm

Refractive index（500nm）：1.9

Evapration condition :electron  gun evapration

Evapration temperature:1880℃

Purity:99.99%