Pharma Grade
| Sr. No. | Description of Test | Specification / Lmited |
|---|---|---|
| 1 | Appearance | White Fine light amorphous odourless powder |
| 2 | Packing | 10 Kgs. |
| 3 | pH (5 % w/v) Aq. Sus. | 3.5 to 5.0 |
| 4 | BET Surface area | 170-180 m2/gm |
| 5 | Bulk Density Before Tapping Bulk Density After Tapping |
Gm/ml, 0.04 max. Gm/ml, 0.08 max. |
| 6 | Loss on Ignition ( at 1000 C for 2 hrs. on anhydrous basis) | 5.0 % ( Max ) |
| 7 | SiO2 on Anhydrous Basis | 98.0 % ( Min ) |
| 8 | Chloride | Not more than 250 ppm |
| 9 | Total Heavy Metal ( as Pb ) | Not more than 25 ppm |
| 10 | Behaviour with Water | Hydrophilic |
END PROPERTIES:
- Used as economic replacement of fumed silica.
- Acts as rheology controller & viscosity enhancer in creams
- Used in various pharmaceutical formulation( Tablet and powder ) and syrup suspension.