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Fused Silica (SiO2) IR Grade

Fused Silica comes in IR and UV grades. The IR grades are sold under several trademarks, including Infrasil. This material is sometimes referred to by the misnomer crystal quartz. Synthetic crystal quartz is bi-refringent and its applications differ from those of fused silica. The IR grade of this material is useful for IR spectroscopy as a window material for cells and cuvettes.



Optical Properties - Fused Silica (SiO2) IR Grade

Transmission Range: 250nm to 3.5 Ám
Refractive Index: 1.50 @ 260nm, 1.40 @ 3.7Ám

Physical Properties-- Fused Silica (SiO2) IR Grade

Hardness (Knoop): 460 kg/mm2
Apparent Elastic Limit: 7200 psi
Modulus of Rupture: 7100 psi
Structure: Amorphous

Chemical Properties - Fused Silica (SiO2) IR Grade

Solubility: Insoluble in water. Soluble in HF.