HT-35 calcined kaolin (china clay)
A 1-micron calcined kaolin powder for paint and other applications. Packaging: 25 kg bags palletised - 17t per FCL.
| MINERALOGICAL COMPOSITION: | Calcined kaolinite; trace impurities | |
| PACKAGING: | 25 kg lined HDPE bags | |
| PHYSICAL PROPERTIES: | TYPICAL | |
|---|---|---|
| Brightness (ISO-Brightness, also known as Reflectance R457 Elrepho) | 92% +/- 1% (white in colour) | |
| Yellow index (b-value, Elrepho) | 1.8 - 2.0 | |
| Particle size distribution> | < 2 micron | 70% |
| Mean particle size (D50) | 1 micron | |
| BET surface area (m2/g) | 12 +/- 2 | |
| Wet sieve residue (> 45 micron/325 Mesh) | 0.05 – 0.005% | |
| Refractive index | 1.62 | |
| Contrast ratio | 88 – 90% | |
| Paint drawdown brightness | 84 - 85 | |
| Conductivity (μs/cm) | 100 | |
| pH Value | 6.7 | |
| Bulk density (g/l) | 300 - 340 | |
| Flow Point (ml/100g) | 70 – 90 | |
| Moisture content | Maximum | 0.5 % |
| Oil absorption (g/100g) | 50 – 75 | |
| CHEMICAL ANALYSIS: | TYPICAL | |
| SiO2 | 52% +/- 2 | |
| Al2O3 | 45% +/- 2 | |
| Fe2O3 | Maximum | 0.35% |
| TiO2 | Maximum | 0.90% |
| CaO | Maximum | 0.016% |
| MgO | Maximum | 0.08% |
| K2O | Maximum | 0.20% |
| Na2O | Maximum | 0.13% |
| L.O.I. | Maximum | 0.54% |
| Last updated: April 2008 | ||