Nanjing SiSiB Silicones Co., Ltd.
Nanjing SiSiB Silicones Co., Ltd.
SiSiB® FS9150
SiSiB® FS9150

Hydrophobic Fumed Silica

SiSiB® FS9150 is a hydrophobic fumed silica after treated with HMDS (Hexamethyldisilazane) based on a hydrophilic fumed silica with a specific surface area of 150m2/g. 

It’s a kind of high purity colloidal white silicone powder.

SiSiB® FS9150

Technical Data



Specific surface area (BET)

115±15 m2/g

pH-Value in 4 % aqueous dispersion

5.5 - 7.5

Loss on drying (2h at 105 °C) wt.%


Loss on ignition (2h at 1000°C) wt.%


Silica content (based on ignited material) wt.%


Tamped density (2h at 105 °C) g/L

40 - 60

Carbon content (2h at 105 °C) wt.%



  • RTV silicone sealants, especially electronic potting and Liquid glue.

  • Adhesives and Sealants.

  • Powder Coatings.

Packing and Storage

  • SiSiB® FS9150 fumed silica is supplied in multiple layer 10 kg bags.

  • 20’ft GP container can load 1800kg with 10 pallets; 40’ft HQ container can load 4000kg with 20 pallets.

  • In the original unopened packaging, SiSiB® FS9150 has a shelf life of 24 months under dry conditions.

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SiSiB® FS9150