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Specification of Undensified Silica Fume USF850


Test ItemTypical
SiO2 (%)88.2
MgO (%)0.33
Elemental Silicon (%)0.09
SO3 (%)0.84
CL (%)0.002
Free CaO (%)0.91
PH7
Moisture (%)0.6
LOI (%)2.09
Specific Surface (BET) (m2/g)21.38
Activity Index (%)108 @ 7days
Retained on 45-μm (No.325) (%)1.52
Fluidity (cm)19.6


Features of Undensified Silica Fume USF 850
Features of Undensified Silica Fume USF 850
  • Improve compressive strength, bond strength, abrasion resisitance, reduce permeability in construction application.

  • As dispersant for chemical products, micro silica instead of mica or diatomite to prevent fertilizer particles caking. Making potassium silicon compound        fertilizer, protect the soil from erosion or deterioration.

  • With strong adsorbability and large specific surface, as anti-caking agent or pellet binding agent improve economic performance.

Applications of Undensified Silica Fume USF 850
  • Construction

  • Fertilizer

  • Pesticide

  • Extinguishant

  • Pellet binder

  • Insulating material, waterproof material, paint, coating, printing industry, etc.

Detailed Package of Undensified Silica Fume USF 850

Jumbo bag with PE liner with uv-proof and anti-aging which conforms to GB/T10454 and EN ISO 21898.
Jumbo bag with PE liner with uv-proof and anti-aging which conforms to GB/T10454 and EN ISO 21898.
20kg/25kg/50kg plastic woven bag with PE liner.
20kg/25kg/50kg plastic woven bag with PE liner.
10kg/20kg water-soluble paper bag.
10kg/20kg water-soluble paper bag.
Special packaging can be supplied on request.
Special packaging can be supplied on request.
Product Inquiry
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