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Barium Borosilicate glass filler has been traditionally used in the classic dental composite systems involving bisGMA and triethyleneglycol dimethacrylate. It is available in a variety of particle sizes. CAS # 65997-17-3
Unit of Measure

Typical Properties


N/A E 3000

Median Particle Size (Microns)

N/A 7.5

Coefficient of Thermal Expansion

N/A 5.625 ppm/ºC

Refractive Index

N/A 1.553


N/A 3.049 g/mL

CAS Registration Number

N/A 65997-17-3


Barium Oxide

N/A 33.0 %

Silicon Dioxide

N/A 50.0 %

Boron Oxide

N/A 9.0 %