Titanium Dioxide
Titanium, the ninth most common element in the Earth’s crust, is a metal commonly found in plants and animals. Titanium … Continued
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Titanium, the ninth most common element in the Earth’s crust, is a metal commonly found in plants and animals. Titanium … Continued
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 color, contain titanium dioxide. Pigment-grate titanium dioxide is used in a range of applications, including:
Ultrafine-grade, or Nanoscale Titanium Dioxide
Ultrafine-grades of titanium dioxide are most commonly used in the following specialty applications:
Questions about sunscreen safety? Use this guide on chemical ingredients used in sunscreen.
The U.S. Food and Drug Administration (FDA) has assessed the safety of titanium dioxide pigment as a color additive in food, drug and cosmetic applications. FDA had issued guidance clarifying the safe use of titanium dioxide pigment as a food colorant, and has stated that titanium dioxide may be safely used in cosmetics, including cosmetics intended for use around the eye. FDA also regulates the safety and effectiveness of sunscreens and their ingredients, including nanoscale titanium dioxide.
Get answers to frequently asked questions about sunscreen safety.
Workers at titanium dioxide manufacturing plants and downstream value-chain manufacturing plants where titanium dioxide is used can be exposed to titanium dioxide dust. The U.S. Department of Labor’s Occupational Safety and Health Administration (OSHA) has established a Permissible Exposure Limit (PEL) for titanium dioxide total dust and requires employers to control workplace exposure below that PEL.
Consumer exposure to titanium dioxide dust is presumed to be extremely low, because titanium dioxide is typically fully incorporated into the end product in which it is used.
The U.S. Food and Drug Administration (FDA) has assessed the safety of titanium dioxide pigment as a color additive in food, drug and cosmetic applications, and as an ingredient in sunscreen products. FDA has also issued guidance clarifying the safe use of titanium dioxide pigment as a food colorant, and has stated that titanium dioxide may be safely used in cosmetics, including cosmetics intended for use around the eye.
Titanium dioxide is included in FDA’s list of acceptable active ingredients in sunscreen products. According to FDA, active ingredients in sunscreen such as titanium dioxide protect your skin from the sun’s harmful UV rays. More questions about sunscreen safety? Use our safety resource on chemical ingredients used in sunscreen.
The International Agency for Research on Cancer (IARC) has classified titanium dioxide as “possibly carcinogenic to humans,” based on studies that showed increased lung tumors in rats associated with titanium dioxide inhalation. However, extensive studies on titanium dioxide industry workers do not suggest an association between occupational exposure to titanium dioxide and an increased risk for cancer in humans.
Pigment-grade titanium dioxide is manufactured at a specific particle size distribution to optimize the scattering of visible light and enhance surface opacity. Titanium dioxide is produced primarily in the pigmentary form (over 98 percent of total production), which makes use of its excellent light-scattering properties for a range of applications that require opacity and brightness.
Titanium dioxide nanomaterials are purposefully made in a much smaller particle size distribution than pigmentary particles and are transparent and more effective as UV absorbers or photocatalysts. The transparency and UV absorbance allow for effective use as a protective ingredient for sunscreens.
Titanium dioxide is often used to impart whiteness to food products, cosmetics and personal care items, like toothpaste. The U.S. Food and Drug Administration (FDA) has assessed the safety of titanium dioxide as a color additive and has issued regulations approving the ingredient for these purposes.