IOTALK no.30
A 7.0-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 | < 30 micron < 12 microns < 4 microns <1.8 microns |
98% 75% 25% 10% |
| Average particle size (D50) | 7.0 micron | |
| Dry sieve test (ALPINE) (> 63 micron) | Maximum | 0.05% |
| Oil absorption | 22 g/100g | |
| Optical properties (Datacolor SF600+): | ||
| L* | Minimum | 95.70 |
| a* | Maximum | -0.12 |
| b* | Maximum | 2.40 |
| Refractive index | 1.57 | |
| pH value (ISO 787/9) | 8 | |
| Specific gravity/Density (ISO 787/10) | 2.75 g/ml | |
| Bulk Density (ISO 787/10) | 0.80 g/ml | |
| Loose bulk Density | 0.50 g/ml | |
| Mohs hardness | 1 | |
| Specific Surface Area (BET) | 5.0 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. 30 is a highly lamellar talc product. It is suitable for paint and varnish applications where fineness and brightness are demanded | ||