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Barium Silicate glass is an inorganic filler with a high refractive index of 1.580. It also has a high coefficient of thermal expansion and a high barium content, which increases its x-ray opacity.  CAS # 65997-17-3
Unit of Measure

Typical Properties


N/A E 2000

Coefficient of Thermal Expansion

N/A 6.7 ppm/ºC

Median Particle Size (Microns)

N/A 13.0

Index of Refraction

N/A 1.580


N/A 3.40 g/mL

CAS Registration Number

N/A 65997-17-3


Barium Oxide

N/A 46.0 %

Silicon Dioxide

N/A 49.0 %