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Aerosil 300 fumed silica

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Supply Ability:
32250 Pound/Pounds per Year
Silicon Dioxide
CAS No.:
Other Names:
Aerosil 300
Place of Origin:
United States
Packaging & Delivery
Packaging Details:
Packaged in 250 lb FIBCs. One time availability.
Delivery Detail:
Immediate shipment


Approximately 32,250 lbs available.
Surface area: 300 +/- 30 m2/g
Tapped density: 90 g/l
SiO2 content: > 99.8%

Hydrophilic Fumed Silica
AEROSIL® 300 is a hydrophilic fumed silica with a specific surface area of 300 m2/g.
Applications and Properties
l Paints and coatings
l HTV - and liquid silicone rubber
l Cable compounds and unsaturated
polyester resins
l Adhesives and sealants
l Printing inks
l Rheology and thixotropy control of
liquids, binders, polymers, etc.
l Optimal dispersion yields best
results in pronounced thickening
and thixotropy
l Reinforcement of HTV- and liquid
silicone rubber (LSR) at a high
transparency level.
l Excellent transparency in
unsaturated polyester resins.
Physico-chemical Data
Properties Unit Typical Value
Specific surface area (BET) m2/g 300 ± 30
Average primary particle size nm 7
Tapped density (approx. value)*
acc. to DIN EN ISO 787/11, Aug. 1983
g/l approx. 50
2 hours at 105°C
wt.% < 1.5
Ignition loss
2 hours at 1000°C based on material
dried for 2 hours at 105°C
wt.% < 2.0
in 4% dispersion
3.7 - 4.7
SiO2 - content
based on ignited material
wt.% > 99.8
* ex plant
The data represents typical values and not production parameters.

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