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ESSTECH Specialty Chemicals > Glass Fillers > Aluminosilicate Glasses-Ceramic > Item # V-115-1104  
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Item # V-115-1104, Aluminosilicate Glasses-Ceramic

The refractive index of aluminosilicate glass filler matches that of bisGMA and is very close to our X-970-0000. It has a negative coefficient of thermal expansion, which means it contracts slightly upon heating. This glass contains no barium and therefore has no x-ray opacity making it ideal to blend with our other glass fillers. CAS # 65997-17-3. 

Typical Properties · Composition

Typical Properties


E 1000

Median Particle Size (Microns)


Coefficient of Thermal Expansion

-2.3 ppm/ºC

Index of Refraction



2.50 g/mL

CAS Registration Number



Silicon Dioxide

71.0 %

Aluminum Trioxide

20.0 %


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The claims made in this catalog are believed to be accurate but all are made without guarantee, since the conditions of use are beyond Esstech, Inc.'s control. The information in this catalog is solely provided as a guide. Esstech, Inc. disclaims any liability in connection with the use of the information, and does not warrant against infringement by reason of the use of its products in combination with other materials or process.
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