Standard | High-class | First-calss |
Purity (BaSO4) | 98% min | 97% min |
105°C volatile | 0.3% max | 0.3% max |
Solubility | 0.3% max | 0.3% max |
Iron (Fe) | 40ppm max | 60ppm max |
Whiteness | 94.0 %min | 92.0 min |
Oil absorption (g/100g) | 10-30 | 10-30 |
PH value (100g/L) | 6.5-9 | 5.5-9.5 |
Fineness:(residue on 0.045mm sieve) | 0.2 | 0.2 |