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Physicochemical properties of BaSO4 NM-220.
| Property | BaSO4 NM-220 |
|---|---|
| Composition/crystallinity/impurities (XRD*) | purity > 93.8%; Na, Ca, Sr, F, Cl, organic compounds |
| Minimum external dimension (TEM**) | 32 nm |
| Shape (TEM**) | Spheroidal |
| Specific surface area (BET***) | 41 m²/g |
| Surface modification | None |
| Contact angle (water) | <10° (hydrophilic) |
*X-ray diffraction (XRD); **Transmission electron microscopy (TEM); ***Brunauer-Emmett-Teller method (BET).
