Bayville Chemical Supply Company Inc 70-G East Jefryn Boulevard Deer Park, New York, 11729 USA Telephone: 631-586-4309 Fax: 631-254-5591 E-Mail:
Bayville Chemical Supply Company Inc70-G East Jefryn BoulevardDeer Park, New York, 11729  USA           Telephone: 631-586-4309      Fax: 631-254-5591      E-Mail:


Fused Silica Powder

SiO2, Amorphous

Fused Silica is a high purity grade of silica, which is around 99.4-99.9% SiO2. Fused Silica is produced by carbon arc, plasma arc, gas fired continual extrusion or carbon electrode fusion. Fused Silica is primarily used in the electronics industry (around 70% of the total market) where its good dielectric and insulating properties are exploited; though it may also be used as a refractory material or in investment casting.

Fused silica is used in the refractory casting slurry, where it coats a wax replica of the component to be cast. The refractory stucco is fired and molten metal is poured into the mould. Finally, the fused silica shell is knocked out. Fused silica makes this knock out stage easier than other refractories such as zirconia and aluminosilicates.


Chemical Properties:



Formula Weight


CAS Number




Melting Point


Boiling Point



2.2 – 2.6 gm/cm3


Powder, Fused, Amorphous

Particle Size

-325 mesh (< 45 microns)


5 m2/gm

Where to Find Us:

Bayville Chemical
70 East Jefryn Boulevard
Suite G
Deer Park, NY 11729

Phone: 631 586-4309

What's New

New larger location

As of August 2014, we have moved to this new, larger, modern facility to better service your needs.


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