Colloidal Silicon Dioxide

Low Bulk Density


Colloidal silicon dioxide is an ideal excipient for solid dosage pharmaceutical applications such as powders, tablets, and capsules. The synthetic amorphous precipitated silica is a fine white odorless powder, chemically inert, non-toxic, and free from impurity. It complies with USP, BP, and IP1996 monographs. Since Madhu Silica’s Colloidal Silicon Dioxide is produced through a precipitation process, it contains no nanoparticles unlike traditional fumed silicas.


  • Excellent flow and anti-caking agent for powders and powdered mixtures.
  • As a glidant in tablets, it improves hardness, friability, disintegration, weight uniformity, and mechanical stability.
  • Contains no nanoparticles.
Drying Loss (at 105 °C)
Ignition Loss  (at 1000 °C for 2 hr.)
Tapped Density
SiO2 on Ignited Basis
Colloidal Silicon Dioxide (USP, BP, IP) Low Bulk Density
1.5 % Max.
5.0 % Max.
40 - 80  gm/l
99.0 % Min.


Madhu Silica Pvt. Ltd. is the largest manufacturer of precipitated silica in India, and the fourth largest in the world. With world class manufacturing facilities and research and development centers in Gujarat, India, they manufacture more than 50 grades of silica catering to a wide array of industries.

Madhu Silica’s precipitated silicas are designed carefully as flow aids to avoid such caking problems in various applications.