Baryte
Natural baryte (barium sulphate, chemical formula BaSO4) can be characterised by:
- High inertness in various media
- High density and, as a result, low oil absorption
- Medium Mohs hardness of 3
- Easy wetting
- Easy to disperse.
(also compared to precipitated barium sulphate)
Natural barium sulphate comes without any residual salts when compared to precipitated grades. In addition, natural barytes are easier to disperse than precipitated grades.
Basic properties
| Property | B | C | D | Unit |
| Moisture | 0.1 | [%] | ||
| pH | 9 | [-] | ||
| Hardness (Mohs) | 3.5 | [-] | ||
| Refractive index | 1.64 | [-] | ||
| Colour (D65/ 10°) L* | 96 | 91.5 | beige | [-] |
| BaSO4 + SrSO4 | 98.5 | 96.5 | [%] | |
| SiO2 | 1 | 3 | [%] | |
| Fe2O3 | 0.05 | 0.3 | [%] | |
| Density | 4.4 | [kg/ dm3] |
Product overview
| Product | Grade | D50
[µm] |
D97
[µm] |
OA
[g/ 100 g] |
| Portaryte | B2 | 1.1 | 2.8 | 12 |
| B3 | 1.3 | 3.7 | 12 | |
| B4 | 1.5 | 4.5 | 11 | |
| B5 | 1.9 | 6.0 | 11 | |
| B8 | 2.2 | 8.0 | 11 | |
| B10 | 2.6 | 11.0 | 10 | |
| B15 | 3.4 | 16.0 | 10 | |
| B25 | 5.5 | 25.0 | 10 | |
| B45 | 13.0 | 45.0 | 9 | |
| B40/10 | 17.0 | 38.0 | 12 | |
| B50/10 | 21.0 | 60.0 | 11 |
| Product | Grade | D50
[µm] |
D97
[µm] |
OA
[g/ 100 g] |
| Portaryte | C15 | 3.5 | 16 | 10 |
| Brand | Grade | D50
[µm] |
D97
[µm] |
OA
[g/ 100 g] |
| Portaryte | D15 | 4.5 | 16 | 10 |
| D20 | 6.0 | 20 | 10 | |
| D40 | 8.0 | 36 | 9 | |
| D50 | 10.5 | 54 | 9 | |
| D80 | 13 | 85 | 8 |
Production locations Portaryte
Application
Baryte will provide:
- UV resistance and weatherability: due to its inertness, baryte supports good UV and weatherability performance to exterior architectural coatings.
Durability
