Undensified Microsilica (Silica Fume) Grade 94U

Undensified Microsilica (Silica Fume) Grade 94U
Undensified Microsilica with Minimum SiO2 Content 94%
  • High SiO2 content.
  • High Activity.
  • Adjustable Bulk Density.
  • Good Fluidity.
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SiO2 (Silicon Dioxide, Amorphous)94% min
Al2O3 (Aluminum Oxide)Typical 0.55%
Fe2O3 (Iron Oxide)Typical 0.16%
CaO (Calcium Oxide)Typical 0.38%
MgO (Magnesium Oxide)Typical 0.58%
K2O (Potassium Oxide)Typical 1.24%
Na2O (Sodium Oxide)Typical 0.29%
LOI (Loss on Ignition)4% max
Moisture3% max, Typical 0.52%
Retained on 45 micron sieve10% max, Typical 1.03%
Bulk Density300-450 kg/m3
Fluidity> 18 cm
Specific surface (BET)18 m2/gram min

ACC® Microsilica Grade 94U conforms to the mandatory requirements of the relevant standards from:

  • American Society for Testing and Materials (ASTM C 1240).
  • European Committee for Standardisation.
Quality Control

ACC® Microsilica is certified according to ISO 9001.

The chemical composition and physical properties are regularly tested in accordance with international standards.


The product is supplied in a range of packaging:

  • 500kg double plastic woven jumbo bag.
  • 20/25kg woven bags with PE liner.
  • Special packaging can be supplied on request.


Once received, our team will get in touch with you soon.