silica glass

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July 13, 2026

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Silica glass, also known as vitreous silica or fused quartz, is a form of glass made exclusively from silica (silicon dioxide, SiO₂). It is valued for its high service temperature, excellent thermal shock resistance, chemical durability, and transparency to ultraviolet light.1

Silica glass can be produced through reactive vapor-phase glassmaking, where silicon tetrachloride reacts with steam at high temperatures to form silica soot, which is then sintered into dense glass. High-purity quartz is fused to create premium grades of chemical and optical silica glass. While pure silica glass is used for specialized applications, most common glass products like containers and windows are made from soda-lime-silica systems due to their lower cost and good durability.231

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amorphous solid
Models of atomic scale structures
…glass is amorphous SiO₂, or silica glass. (Quartz, which is present in sand, is a crystalline form of SiO₂.) In amorphous SiO₂ each silicon atom is bonded to four oxygen atoms, and each oxygen atom is bonded to two silicon atoms. This structure is difficult to represent in a two-dimensional…
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…glass is amorphous SiO₂, or silica glass. (Quartz, which is present in sand, is a crystalline form of SiO₂.) In amorphous SiO₂ each silicon atom is bonded to four oxygen atoms, and each oxygen atom is bonded to two silicon atoms. This structure is difficult to represent in a two-dimensional…
Read More

telecommunications media
Optical fibres
…fibres are made of fused silica glass. The refractive index of either the core or the cladding is modified during the manufacturing process by diluting pure silica glass with fluorine or germanium in a process known as doping. (The manufacturing process itself is described in industrial glass: Glass forming: Optical…
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…fibres are made of fused silica glass. The refractive index of either the core or the cladding is modified during the manufacturing process by diluting pure silica glass with fluorine or germanium in a process known as doping. (The manufacturing process itself is described in industrial glass: Glass forming: Optical…
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industrial glass
Silica-based
…of silica is known as silica glass, or vitreous silica. (It is also called fused quartz if derived from the melting of quartz crystals.) Silica glass is used where high service temperature, very high thermal shock resistance, high chemical durability, very low electrical conductivity, and good ultraviolet transparency are desired.…
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…of silica is known as silica glass, or vitreous silica. (It is also called fused quartz if derived from the melting of quartz crystals.) Silica glass is used where high service temperature, very high thermal shock resistance, high chemical durability, very low electrical conductivity, and good ultraviolet transparency are desired.…
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