Description:
R221 is produced by the sulfuric acid method. The product is treated with silicon and aluminum composite inorganic coating and special organic surface treatment. It has high dispersibility, high hiding power, and high weather resistance.
Features:
High dispersibility
High weather resistance
high hiding power
Application:
Ink, paint, coating, rubber, printing, and dyeing
Technical Index:
| Typical Properties | Value |
| Tio2 content,% | ≥92 |
| Tinter reducing power(Reynolds Number) | ≥1750 |
| Rutile content,% | ≥97 |
| 105ºC volatile matter,% | ≤0.7 |
| 45μm Residue on sieve,% | ≤0.05 |
| pH-value of aqueous suspension | 6.5-8.5 |
| Oil absorption(g/100g) | ≤23 |
| Brightness,% | ≥94 |
