Complaint
| Property | R218 |
| TiO2 content % | ≥94.0 |
| Rutile content % | ≥98.0 |
| Color (compared with standard sample) ΔL*(sample-standard sample) Δs=(Δa2+Δb2)0.5 | Not lower than ≥-0.3 ≤0.5 |
| Matter volatile at 105ºC % | ≤0.5 |
| Matter soluble in water % | ≤0.5 |
| Residue on sieve 45µm % | ≤0.1 |
| PH of aqueous suspension | 6.5-8.5 |
| Brightness % | ≥96 |
| Oil absorption g/100g | ≤21 |
| Tinting strength , Reynolds number | ≥1800 |
