Nanjing SiSiB Silicones Co., Ltd.
Nanjing SiSiB Silicones Co., Ltd.
SiSiB® FS0150
SiSiB® FS0150

Hydrophilic Fumed Silica

Hydrophilic fumed silica is manufactured by hydrolysing volatile chlorosilanes in an oxyhydrogen flame. In chemical terms, the loose white powder consists of highly pure amorphous silicon dioxide. 

Hydrophilic silica is wetted by water and can be dispersed in water. Hydrophobic silica is produced by the chemical reaction of hydrophilic silica with reactive silanes, e.g. chlorosilanes or hexamethyldisilazane. It has water-repellent properties and is no longer dispersible in water.

SiSiB® FS0150

Technical Data


112945-52-5 or 7631-86-9


601-216-3 or 231-545-4

Specific surface area (BET)

150±15 m2/g

Average primary particle size

5~40 nm

SiO2 content, wt.% (1000°C, 2h)

> 99.8%

Loss on drying, (105°C, 2h) wt.%


Ignition loss (1000°C, 2h), wt.%


pH-Value (in 4 % aqueous dispersion)


Tamped density



  • SiSiB® FS0150 can be applied as a thickening and thixotropic agent in silicone sealants.

  • SiSiB® FS0150 can be used as a reinforcing silicone filler in elastomers, mainly silicone elastomers.

Packing and Storage

  • SiSiB® FS0150 hydrophilic fumed silica is supplied in multiple layer 10 kg bags.

  • In the original unopened packaging, SiSiB® FS-0150 has a shelf life of 24 months under dry conditions.

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SiSiB® FS0150