High-purity fused spherical silica "EXCELICA"

EXCELICA is high-purity fused synthetic spherical silica produced by vapor phase reaction. The particle diameter ranges from the several level to 100 microns. Coarse grain cut grades are also available to suit various applications.

Product overview

Generic names High-purity fused spherical silica
Product name EXCELICA
Chemical formula SiO2
Packing /
shipping method
Flexible containers, paper bags
General applications
  • Encapsulants for semiconductors
  • Hole-plugging materials for substrates
  • Die bonding materials
  • Precision adhesive
  • Quartz materials
  • Films

Special characteristics

EXCELICA is produced in a closed system using highly purified materials, resulting in silica with a trace of impurities such as radioelements, heavy metal elements, or ionic elements. Especially the amount of uranium or thorium contained, which emits alpha rays causing semiconductor memory malfunctions, in EXCELICA is less than 0.1ppb.

Inquiries Concerning Products

Silica & Derivatives Sales Dept.

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