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Technical Datasheet | Supplied by Toyotsu Chemiplas
ADMAFINE® SO-E2 distributed by Toyotsu Chemiplas is a silica filler and low alpha-beam grade. It is in form of microscopic spherical oxide particles. It contains fewer ionic impurities such as Na, so it is used for high-heat resistant or high-voltage resistant applications. It has high purity, high sphericity, non-porous surface, low surface area ratio and sharp particle size distribution. It features excellent dispersibility and easy blend control. It shows rigidity, low viscosity, wear resistance, dimensional stability and excellent surface roughness. It possesses low heat expansion and high heat conductivity. ADMAFINE® SO-E2 is recommended for printed circuit boards, memory chips, epoxy molding compounds and other engineering plastics.
Product Type
Fillers > Silicas
Chemical Composition
Physical Form
Particle, Spherical
Product Status
Applications/ Recommended for
  • Epoxy, Epoxide Resin
  • Electronics / Computers > Printed circuit boards
  • Injection molding - thermoplastics
  • Mechanical/ physical performance > Dimensional stability
  • Polymer Conversion > Dispersion

ADMAFINE® SO-E2 Properties


Value & Unit
Test Condition
Test Method
Particle Size
0.5 µm
Surface Area
5.5 m2/g
Silica Content
> 99.9 %

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