| Item | Index | 
| TiO2 content, % | ≥95.0 | 
| Rutile Content,% | ≥98.0 | 
| color(compared with standard samples) | Not less Than | 
| Whiteness,% | ≥96 | 
| Tinter reducing power(compared with standard samples)% | ≥96 | 
| Oil absorption, g/ 100g | ≤23.0 | 
| pH-value of aqueous suspension | 6.5-8.0 | 
| Water solubles, % | ≤0.3 | 
| 105°C volatile matter % | ≤0.10 | 
| Residue on sieve 45 μm,% | ≤0.1 | 
| Resistivity of aqueous extract,Ωm | ≥8000 |