R218 Rutile Grade Titanium Dioxide for General Purposes
R-218 is rutile titanium dioxide made by sulfate process. It has an unparalleled hiding power due to the unique hydrolysis and calcination process. Advanced,fine grinding process make the particle size distribution more uniform and higher gloss; As a result of a special surface treatment, R-218 has a better weather resistance, lower oil absorption, better leveling property. Large-scale production equipment, advanced DCS control system, as well as our company's strong technical fore and rich management experience, makes the R-218 with a more stable and excellent quality.
Standards and specifications
- Type: R2 (ISO591)
- CAS Number: 13463-67-7
- EINECS Number: 236-675-5
- Standard Number: Q/SNBJ1-2012
- Color index No.77891, white pigment 6
Main features
|
Properties |
Specification R218 |
|
Mass fraction of Tio2 /% |
≥ 94 |
|
Whiteness (compared with standard sample) |
Not less than |
|
Brightness % |
≥ 95.3 |
|
Rutile content % |
≥ 98 |
|
Tint reducing power (Reynolds number) |
≥ 2000 |
|
PH value of aqueous suspension |
6.5~8.5 |
|
Oil absorption g/100g |
≤ 18 |
|
Electrical resistivity Ω.m |
≥ 80 |
|
Mass fraction of screenings (45ūm)/% |
≤ 0.01 |
|
Dispersibility (Hickmann number) |
≥ 6.50 |
|
Mass fraction of volatiles at 105℃ % |
≤ 0.5 |
Particle Size
The specially designed hydrolysis process results in R218 having a fine particle size, yielding a white tint, blue undertone, and excellent hiding power.
Surface Treatment
R218 is treated with advanced zirconium and aluminium compounds, significantly enhancing hiding power, gloss, and weather resistance. The organic treatment further improves dispersibility, making it suitable for various application systems.
Particle Size Distribution
R218's particle size distribution is consistent due to rigorous hydrolysis and calcination controls, ensuring superior gloss, dispersibility, and colour strength.
Applications
R218 is suitable for various applications, including indoor and outdoor coatings, powder coatings, colour masterbatches, and various plastic systems.
The key benefits of this application are as follows:
Blue Undertone
The small, uniform particles effectively scatter blue light, resulting in a blue undertone and excellent whiteness.
High weather resistance
The product offers high weather resistance. Thanks to its advanced surface treatment, R218 is highly durable in many environments.
Excellent dispersibility
The product displays excellent dispersibility. Inorganic and organic surface treatments prevent particle coalescence, improving application systems' dispersibility.
Lower oil absorption
The product exhibits low oil absorption. The product's low oil absorption rate improves wettability and dispersion, offering a cost-effective solution.
This comprehensive product is ideal for industries requiring high-quality, versatile titanium dioxide for general use.
