Titanium dioxide, also known as titanium oxide or titania, is the naturally occuring oxide of titanium,chemical formula TiO2. When used as a pigment, it is called titanium white,Pigment white. Generally it is sourced from ilmenite, tutile and anatase. It has a wide range of applications, from paint to sunscreen to food coloring.
R838 is produced by sulfate process, It is a Rutile TiO2 pigment which is Inorganic Si, Al surface coating, organic surface treating. Has optical properties of partial blue phase, good whiteness，good optical properties and hiding power, good durability and dispersion etc.
Product appearance: white powder
| Test Items | Standard | Result |
| TiO2 purity% m/m | 92 Min. | 93 |
| Matter volatile at 105ºC % m/m | 0.8 Max. | 0.4 |
| Hydrotrope % | 0.5 Max. | 0.3 |
| Residue on sieve 45 µm % | 0.03 Max. | 0.019 |
| Color compare with standard | not lower than | not lower than |
| Titing strength compare with standard % | 108 Min. | 115 |
| PH of suspension, aqueous solution retainted | 6.5----8.5 | 7.4 |
| Oil absorbtion g / 100g | 21 Max. | 20 |
| Resistivity of aqueous extract Ωm | 50 Min | 116 |
| Rutile crystal form conversion，% | 97 Min. | 98.4 |
| Average particle size µm | 0.22-0.28 | 0.24 |
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