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Interesting Facts about Titanium

Pure titanium dioxide is a fine, white powder that provides a bright, white pigment. Titanium dioxide has been used for a century in a range of industrial and consumer products, including paints, coatings, adhesives, paper, plastics and rubber, printing inks, coated fabrics and textiles, as well as ceramics, floor coverings, roofing materials, cosmetics, toothpaste, soap, water treatment agents, pharmaceuticals, food colorants, automotive products, sunscreen and catalysts.


Titanium dioxide is produced in two main forms. The primary form, comprising over 98 percent of total production, is pigment grade titanium dioxide. The pigmentary form makes use of titanium dioxide’s excellent light-scattering properties in applications that require white opacity and brightness. The other form in which titanium dioxide is produced is as an ultrafine (nanomaterial) product. This form is selected when different properties, such as transparency and maximum ultraviolet light absorption, are required, such as in cosmetic sunscreens.


Pigment-grade Titanium Dioxide

Pigment-grade titanium dioxide is used in a range of applications that require high opacity and brightness. In fact, most surfaces and items that are white and pastel, and even dark shades of colour, contain titanium dioxide. Pigment-grate titanium dioxide is used in a range of applications, including:

- Paints and Coatings: Titanium dioxide provides opacity and durability, while helping to ensure the longevity of the paint and protection of the painted surface.

- Plastics, Adhesives and Rubber: Titanium dioxide can help minimise the brittleness, fading and cracking that can occur in plastics and other materials as a result of light exposure.


- Cosmetics: Pigment-grade titanium dioxide is use in some cosmetics to aid in hiding blemishes and brightening the skin. Titanium dioxide allows for the use of thinner coatings of make-up material for the same desired effect.


- Paper: Titanium dioxide is used to coat paper, making it whiter, brighter and more opaque.


- Food Contact Materials and Ingredients: The opacity to visible and ultraviolet light offered by titanium dioxide protects food, beverages, supplements and pharmaceuticals from premature degradation, enhancing the longevity of the product. Specific classes of high purity pigment-grade titanium dioxide are also used in drug tablets, capsule coatings and as a decorative aid in some foods.


Ultrafine-grade, or Nanoscale Titanium Dioxide

Ultrafine-grades of titanium dioxide are most commonly used in the following specialty applications:

- Sunscreen: Nanoscale titanium dioxide becomes transparent to visible light while serving as an efficient UV light absorber.

- Catalysts: Nanoscale titanium dioxide is used as a support material for catalyst applications. Major uses include in the automotive industry to remove harmful exhaust gas emissions and in power stations to remove nitrous oxides.


Here we share some interesting facts about titanium and titanium dioxide:

1. Titanium is named for the Titans of mythology. In Greek mythology, the Titans were the gods of Earth.

2. The original name for titanium was manaccanite. The metal was discovered in 1791 by William Gregor, a pastor in a village in South Cornwall of the United Kingdom called Manaccan.

3. Titanium is abundant, the ninth most abundant element in the Earth's crust.

4. It occurs naturally in the human body, in plants, in seawater, on the Moon, in meteors, and in the Sun and other stars.

5. Although titanium is used in many products, nearly 95% of the metal that is purified is used to make titanium dioxide, TiO2.


For more information on the local paint industry, raw materials and additives contact Chemgrit Coatings on www.chemgrit.co.za or marilyn@chemgritsa.co.za.


[Information sourced: https://www.chemicalsafetyfacts.org/titanium-dioxide; https://www.thoughtco.com]

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