Product Description
Fumed silica, Hydrophobic
type:R649
same as AEROSIL R972
Hydrophilic fumed silica by DDS (dimethyl dichloro ) treatment
Specific surface area(BET): 110+-20 m2/g PH:3.6-4.5
SiO2:99.8% min Average primary particle size:12 nm Moisture:1.5% max
Bulk density:50 g/l Loss ignition:2.0% max Carbon content:0.6-1.2% max
Hydrophobicity, wetting value: 35-45%
Packing: 10 kgs Three-layer kraft paper bag, on one pallet
The capacity of one 20GP: 2.2 tons(88 bags)
Usage: Silicone Rubber, Sealant, Ink, Adhesive, Cable Material
Silica Properties
A:Hydrophobic product for thickening and reinforcement of RTV-1K one-component mailer silicone sealant
B:Improve the storage performance of silicone sealants
C:For paint anti-settling to improve pigment stabilization and enhance anti-settling effect
D:Hydrophobicity and water repellency of liquid systems
E:Improve hydrophobicity and rheology of offset printing inks
Audited Supplier 
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