Talc
Talc (silicate, chemical formula Mg3(OH)2/Si4O10) can be characterised by:
- Lamellar nature: talc can be classified as either microcrystalline (length:thickness = 10:1) or macrocrystalline (length:thickness = 35:1)
- Low Mohs hardness of 1 (being the softest mineral in the range)
- Hydrophobic surface and, as a result, low water absorption
- High brightness
- High purity
- High inertness in various media.
Basic properties
Property | Value | Unit |
Moisture | 0.2 | [%] |
pH | 9 | [-] |
Hardness (Mohs) | 1 | [-] |
Refractive index | 1.57 | [-] |
Density | 2.8 | [kg/ dm3] |
Product overview
Product | Grade | D50
[µm] |
D97
[µm] |
OA
[g/ 100 g] |
L* |
Tital | VT 5 | 4.5 | 11 | 55 | 96 |
VT 10 | 7 | 17 | 52 | 96 | |
VT 15 | 8 | 22 | 52 | 96 | |
VT 20 | 10 | 28 | 48 | 96 | |
VT 30 | 15.5 | 60 | 40 | 96 | |
VT 50 | 16 | 72 | 32 | 96 | |
VT Prime | 10 | 28 | 38 | 93 |
Production location Tital
Application
Talc will provide:
- Chemical resistance: due to its lamellar structure and hydrophobic nature, talc provides barrier properties to the primer and good chemical resistance compared to conventional fillers.
- Gloss control: with the availability of various grades, it is possible to apply coatings with a broad range of gloss levels.