R-5566 Rutile Titanium Dioxide TiO2 Pigment - High Quality from China Suppliers and Factory
Applicable Types: General purpose.
| Property Item | Technical Specifications |
|---|---|
| TiO2 Content | ≥93.0% |
| Lightness | ≥94.50 |
| Hiding power (Reynolds Number) | ≥1900 |
| 105℃ Volatile Matter | ≤0.5 |
| PH-Value of Aqueous Suspension | 6.0～9.0 |
| Oil absorption value (g/100g) | ≤23 |
| Residue on sieve (25μm mesh, m/m)% | ≤0.15 |
| Electrical resistance of aqueous extract (Ω.m) | ≥40 |
| Water soluble | ≤0.5 |
| Rutile content | ≥97.5 |
| Dispersion (Hegmann Value) | ≥5.75 |
| Bluish Whiteness (R457) | ≥92.5 |
| Scattering power | ≥97 |
R-5566 is described as a rutile titanium dioxide pigment engineered for water-based systems that still need strong opacity, high gloss potential, and robust outdoor durability. The product page states that it is stabilized with aluminum salt and treated with zirconium and aluminum inorganic surface treatment plus organic surface treatment. It also highlights easy dispersion, good whiteness, high gloss, high covering, strong hydrophilicity, and very strong weather resistance. In waterborne formulations, hydrophilicity and wetting behavior can strongly influence dispersion time, viscosity stability, and the risk of seeding or flocculation during storage.
The listed applications include architectural coatings and industrial coatings, with an explicit note about water-based systems, while also mentioning plastics and rubber as additional fields. For architectural paints, the pigment must create high hiding so that fewer coats are needed, and it must maintain brightness when exposed outdoors. For industrial waterborne coatings, a stable dispersion helps keep film appearance uniform across shear conditions and application methods. In practical processing, the pigment is typically added into a well-designed grind phase with appropriate water-compatible dispersants and defoamers, then milled to the target fineness before let-down. Because the grade is promoted for weather resistance, it is most relevant for exterior paints and protective coatings where long-term whiteness retention is a priority.
The technical properties published on the page support its positioning. TiO2 content is ≥ 93.0% and rutile content is ≥ 97.5. Lightness is ≥ 94.50, and hiding power (Reynolds number) is ≥ 1900. Other values include volatiles at 105°C ≤ 0.5%, pH 6.0–9.0, oil absorption ≤ 23 g/100 g, and dispersion (Hegmann value) ≥ 5.75. The grade is also listed with bluish whiteness (R457) ≥ 92.5 and scattering power ≥ 97, reinforcing brightness and opacity development. Quality and extract indicators include residue on a 25 um sieve ≤ 0.15%, water soluble ≤ 0.5, and electrical resistance of aqueous extract ≥ 40 ohm·m. Overall, R-5566 is positioned as a waterborne-friendly rutile TiO2 that prioritizes easy dispersion and durable whiteness for architectural and industrial coating use.