Titanium(IV) Oxide, with the CAS number 1317 - 70 - 0, is a well - known inorganic compound. It exists in two main crystalline forms: rutile and anatase. The rutile form is denser and more stable, while the anatase form has higher photocatalytic activity.
Physically, it is a white, odorless powder. Its molecular formula is TiO₂, and it has a molar mass of approximately 79.87 g/mol. The density of rutile titanium dioxide is around 4.23 g/cm³, and that of anatase is about 3.89 g/cm³. It has a high melting point of about 1843 °C and a boiling point of approximately 2972 °C.
In terms of purity, the product from our factory supply is of high quality, with a purity often reaching over 98%. It has excellent chemical stability, being insoluble in water, weak acids, and organic solvents. However, it can react with concentrated sulfuric acid and hydrofluoric acid under certain conditions.
Titanium(IV) Oxide has a wide range of applications across various industries. In the paint and coating industry, it is the most widely used white pigment. It provides excellent opacity, whiteness, and brightness to paints, making them more durable and resistant to chalking and fading. It can be used in interior and exterior wall paints, automotive paints, and industrial coatings.
In the plastics industry, it is added to plastics to improve their mechanical properties, such as strength and stiffness. It also enhances the UV resistance of plastics, preventing them from yellowing and embrittlement over time. Common plastic products that use titanium dioxide include PVC pipes, plastic films, and consumer plastic goods.
The paper industry also benefits from titanium dioxide. It is used as a filler and coating pigment to improve the whiteness, smoothness, and printability of paper. In the food industry, it is used as a food additive (E171) to provide whiteness in products such as chewing gum, candies, and dairy products.
Moreover, in the cosmetics industry, it is a key ingredient in sunscreens and other skin - care products. It works as a physical sunscreen, reflecting and scattering UV rays to protect the skin from sunburn and long - term damage.
When using Titanium(IV) Oxide in paints and coatings, it is usually dispersed in a liquid medium. First, select an appropriate dispersant according to the type of paint system. Then, add the titanium dioxide powder slowly to the liquid under high - speed stirring to ensure uniform dispersion. The amount of titanium dioxide added depends on the desired whiteness and opacity of the paint, typically ranging from 10% to 30% by weight.
In plastics, it can be added during the extrusion or molding process. Mix the titanium dioxide powder with the plastic resin thoroughly before processing to ensure even distribution. The dosage is determined by the specific requirements of the plastic product, usually between 1% and 5%.
For paper applications, it can be added to the pulp during the papermaking process or used as a surface coating. When used as a coating, prepare a coating solution with appropriate binders and additives, and then apply it to the paper surface using a coating machine.
In food and cosmetics, strict compliance with relevant regulations and standards is required. The dosage should be within the permitted range, and proper mixing and processing methods should be used to ensure product safety.
Case 1: Automotive Paint
A well - known automotive paint manufacturer used our Titanium(IV) Oxide in their new - generation automotive paints. They added the titanium dioxide at a concentration of about 25% by weight. The resulting paint showed excellent color retention and gloss even after long - term exposure to sunlight and harsh weather conditions. The cars painted with this paint had a more attractive appearance and higher market value.
Case 2: Plastic Packaging Films
A plastic film production company incorporated our titanium dioxide into their polyethylene films at a dosage of 2%. The films became more opaque and had better UV resistance. This was particularly beneficial for packaging food products, as it protected the contents from light - induced degradation,
This is William, CEO of Zhishang Chemical Co., Ltd.
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