Customization: | Available |
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CAS No.: | 13463-67-7 |
Formula: | O2ti |
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Chemical Names:
Titanium(IV) oxide
Titania
Rutile (natural mineral form)
Anatase (crystal form)
CAS No.: 13463-67-7
Molecular Formula: TiO2
Molar Mass: 79.87 g/mol
Physical Properties:
Appearance: Bright white powder (most common)
Crystal Forms:
Rutile (most stable, higher refractive index)
Anatase (photocatalytically active)
Brookite (rare)
Refractive Index: 2.4-2.9 (highest among white pigments)
Mohs Hardness: 6-7 (rutile)
Chemical Properties:
Excellent UV absorption (absorbs <400nm wavelengths)
Photocatalytic activity (anatase > rutile)
Chemically inert under most conditions
Solubility: Insoluble in water/organic solvents; soluble in concentrated acids
Sulfate Process:
Uses ilmenite (FeTiO3) or titanium slag
Sulfuric acid digestion → crystallization → calcination
Chloride Process (Superior Grade):
Uses rutile/TiCl4 → vapor-phase oxidation at 1000-1400°C
Produces finer, purer particles
Paints: Provides opacity, brightness, and durability
Plastics: UV protection and whitening (e.g., PVC, polyolefins)
Inks & Coatings: Enhances print quality
Physical UV Filter: Blocks UVB/UVA (micronized forms)
Opacifier: In foundations, powders (E171 in EU)
Food Additive (E171): Whitener in candies, chewing gum
Tablet Coating: Inert excipient
Photocatalysis: Self-cleaning surfaces, air/water purification
Solar Cells: Dye-sensitized TiO2 (Grätzel cells)
3D Printing: UV-curable resins