Features
Application Areas
- Chemical Name: Titanium dioxide
- Chemical Formula: TiO2
- Molecular Weight: 79.87 g/mol
- CAS Number: 13463-67-7
- Molar Mass: 79.866 g/mol
- Appearance: White solid
- Odor: Odorless
- Density: 4.23 g/cm3 (rutile)
- 3.78 g/cm3 (anatase)
- Melting Point: 1,843 °C (3,349 °F; 2,116 K)
- Boiling Point: 2,972 °C (5,382 °F; 3,245 K)
- Solubility in Water: Insoluble
- Band Gap: 3.05 eV (rutile)
- Refractive Index (nD): 2.488 (anatase)
- 2.583 (brookite)
- 2.609 (rutile)
- Aside from being used as a food coloring, it is also utilized in the production of paints and sunscreens.
- Widely employed due to its effective scattering of visible light, it imparts whiteness, brightness, and opacity to paints and coatings.
- In the food sector, particularly in various white products such as confectionery, gum, baking powder, and white chickpeas, titanium dioxide is extensively used.
- The primary function of titanium dioxide, acting as a pigment, is to provide brightness, whiteness, and dullness in both paints and coatings and in plastics, paper, ink, fiber, pharmaceuticals (in pills and tablets), food, and cosmetic products.
- With this property, titanium dioxide is used as a white color for surface coating, for distinguishing layers in products, and as a whitening agent in toothpaste.
- Titanium dioxide is a mineral used in cosmetics as a thickening, whitening, lubricating, and sun-blocking agent.
- It protects the skin from UVA and UVB radiation without the risk of irritating the skin. The most common application of photocatalysis, which is the catalytic effect of light, is the cleaning of environmental pollution. When light and the appropriate material come together, the cleaning process occurs spontaneously.
- The UV radiation in our surroundings during the day is around one milliwatt per square centimeter on average. In the light we use inside buildings, this ratio drops to one-thousandth. Even in this ratio, when UV rays come into contact with titanium dioxide with the right structure, the cleaning process begins. However, the structures of titanium dioxide used for photocatalytic effects and those used in the paint, cosmetic, and food industries are different. The photocatalytic effect of titanium dioxide occurs in the form of breaking down organics when it comes into contact with light. When used positively, this means eliminating unwanted organics in the air, water, and on various surfaces (dirt, microbes, bacteria, odor, and harmful organic chemicals) in our environment.
Due to its high dispersion and brightness, good covering ability, excellent color stability, and resistance to fading, titanium dioxide is one of the essential auxiliary materials in PVC profile production. Titanium dioxide, commonly known as the white pigment, is always preferred due to its coloring power, opacity, minimal reactivity, and excellent thermal stability. Titanium dioxide exists in two forms: Rutile and Anatase.Rutile is the most widely used form of titanium dioxide, with a specific gravity of 4.2 g cm-3, a refractive index of 2.76, and a hardness of 7 on the Mohs scale. Rutile has strong coloring power and opacity. It is more stable than Anatase. Rutile, being the best white pigment, protects plastic against ultraviolet rays. In addition to providing resistance to weather conditions and heat, rutile also imparts durability to plastics.
Titanium dioxide is widely used among UV stabilizers. The addition of UV stabilizers to PVC formulations can significantly reduce the impact of UV rays. Pigments that absorb or reflect light play a crucial role in protecting polymers against UV rays. Whiteness and brightness are important parameters in the absorption or reflection of UV rays.