| properties | unit | Specification |
| SIO2 | % | >85 |
| Moisture | % | <3.0 |
| Loss of Ignition LOI | % | <6.0 |
| Specific surface BET | M2/gm | >15 |
| Pozz. Activity Index | % | >105 |
| Retained 45 mi sieve | % | <10 |
| Bulk Density | Kg/m3 | 500 - 700 |