We don't sell silica as a filler. We focus on flow, anti-caking, liquid absorption and dispersion uniformity to make premix and additive systems easier to process and store.
On CS-C200, an oil absorption of 240–290 g/100g (ISO 4652) and BET surface area of 170–230 m²/g (ISO 9277) support high liquid loading and carrier capacity for premix and liquid-additive powdering.
Typical benchmarks: Evonik SIPERNAT® series (e.g. SIPERNAT® 22, common in premix carrier / flow-aid / anti-caking), QEMETICA/PQ Flo-Gard® feed grade silica, W. R. Grace SYLOID® food/feed carrier and anti-caking grades.
We don't replicate brand premiums. We enter through niche applications, second-source / backup supply and multiple grades, and differentiate with profile screening, problem diagnosis and sample conversion.
Censil Silica CS-series precipitated silica for this track is offered as CS-C200 Carrier. Typical physical properties are shown below with the applicable test method for each parameter.
| Property | Unit | CS-C200 Carrier | Test method |
|---|---|---|---|
| BET specific surface area | m²/g | 170 – 230 | ISO 9277 / DIN 66131 |
| Oil absorption (DOP) | g/100g | 240 – 290 | ISO 4652 / DIN 53617 |
| Particle size D50 | µm | 10 – 18 | ISO 13320 (laser diffraction) |
| Sieve residue (45 µm) | % | ≤ 0.10 | ISO 2591-1 |
| Bulk density (poured) | g/L | 90 – 140 | ISO 60 |
| Tapped density | g/L | 140 – 210 | ISO 697 |
| pH (5% aq. suspension) | — | 6.0 – 7.5 | ISO 6588 |
| Loss on drying (105 °C, 2 h) | % | 4.0 – 7.0 | ISO 787-2 |
| SiO₂ content (dry basis) | % | ≥ 97.0 | Gravimetric / XRF |
| Loss on ignition (1000 °C) | % | ≤ 6.0 | ISO 6798 |
Typical values. Typical values representative of the grade family. Values are for guidance; a grade-specific specification sheet is available on request.
| Test dimension | What to watch | What it tells the customer |
|---|---|---|
| Absorption / carrier capacity | Whether it stably carries the target liquid load | Judges powdering feasibility |
| Anti-caking | Whether caking, bridging and storage set are reduced | Judges shelf and transport stability |
| Flowability | Whether discharge, packing and mixing improve | Judges production efficiency |
| Dispersion uniformity | Whether active-ingredient distribution is more consistent | Judges formulation quality |