IOTALK no.25
A 5.4-micron talc suitable for applications where a very fine, pure and bright product is required.
| MINERALOGICAL COMPOSITION: | Talc > 98.0% Chlorite < 1.5% Calcite Trace Quartz Trace Asbestos Not detected |
|
| PACKAGING: | 1t bulk bags | 25 kg bags, shrinkwrapped & palletised |
| PHYSICAL PROPERTIES: | TYPICAL | |
|---|---|---|
| Particle size distribution | < 20 micron < 8 micron < 5.4 micron <1.9 micron |
98% 70% 50% 20% |
| Average particle size (D50) | 5.4 micron | |
| Dry sieve test (ALPINE) (> 40 micron) | Maximum | 0.1% |
| Oil absorption | 28 g/100g | |
| Optical properties (Datacolor SF600+): | ||
| L* | Minimum | 96.30 |
| a* | Maximum | -0.10 |
| b* | Maximum | 2.10 |
| Refractive index | 1.57 | |
| pH value (ISO 787/9) | 8 | |
| Specific gravity/Density (ISO 787/10) | 2.75 g/ml | |
| Bulk Density (ISO 787/11) | 0.70 g/ml | |
| Loose bulk Density | 0.40 g/ml | |
| Mohs hardness | 1 | |
| Specific Surface Area (BET) | 5.6 m2/g | |
| Moisture content | Maximum | 0.2% |
| CHEMICAL ANALYSIS: | TYPICAL | |
| SiO2 | Minimum | 61.0% |
| MgO | Minimum | 31.0% |
| CaO | Maximum | 0.3% |
| Fe2O3 | Maximum | 0.3% |
| Al2O3 | Maximum | 0.3% |
| HCl insoluble content | Maximum | 1.5% |
| Loss on ignition (at 1000 °C) | Maximum | 6.0% |
| IOTALK No. 25 is a highly lamellar talc product. It is suitable for applications where a very fine, pure and bright product is required. | ||