Exploring the Significance of CAS Number 13463-67-7

The Chemical Abstracts Service (CAS) number 13463-67-7 corresponds to titanium dioxide (TiO₂), a widely utilized compound in various industries. Known for its outstanding properties, titanium dioxide has become an essential ingredient in products ranging from paints and coatings to food and cosmetics. This article delves into the importance, applications, and potential concerns regarding titanium dioxide.

Titanium dioxide is a naturally occurring oxide of titanium, known for its bright white color and high refractive index. It can exist in three polymorphic forms rutile, anatase, and brookite, with rutile being the most stable and commonly used in industrial applications. Its chemical formula, TiO₂, signifies that it is composed of one titanium atom and two oxygen atoms. The compound is renowned for its excellent opacity, durability, and UV resistance, making it an ideal pigment and protective agent.

Applications of Titanium Dioxide

1. Pigments and Coatings The most prominent use of titanium dioxide is as a pigment in paints and coatings. Its ability to scatter visible light makes it an exceptional white pigment, providing high coverage and brightness. These properties enhance the aesthetic quality of paints and coatings used in various applications, including residential, commercial, and industrial contexts.

2. Plastics and Rubber Titanium dioxide is also employed in the plastics industry to improve the opacity and brightness of products. Its UV resistance helps to protect plastic materials from degradation caused by sunlight, extending the lifespan of products such as packaging materials, automotive parts, and household goods.

3. Cosmetics In cosmetics, titanium dioxide serves not only as a pigment but also as a sunscreen agent. Its ability to reflect and scatter UV light makes it an effective ingredient in sunscreens and makeup products, protecting the skin from harmful solar radiation.

4. Food Industry Titanium dioxide is used as a food additive, designated as E171 in Europe and recognized for its role as a coloring agent. It gives a bright white color to products such as confectionery and dairy items. However, its use in food has recently come under scrutiny, raising questions about safety and regulatory compliance.

5. Photocatalysis and Environmental Applications Titanium dioxide has gained attention in the field of photocatalysis. Its photocatalytic properties enable it to break down organic pollutants when exposed to ultraviolet light, making it valuable for environmental remediation efforts, including air and water purification.

Safety Concerns and Regulatory Aspects

Despite its many benefits, titanium dioxide has faced scrutiny related to safety, particularly concerning its inhalation as a fine particulate matter. The International Agency for Research on Cancer (IARC) classified titanium dioxide as possibly carcinogenic in humans when inhaled in high concentrations, particularly in industrial settings. This classification has prompted the need for stringent occupational safety measures.

In the food industry, rising concerns about the potential health effects of ingesting titanium dioxide have led to regulatory evaluations. Some countries have moved to ban or restrict its use in food products, urging manufacturers to seek alternatives.

Conclusion

CAS number 13463-67-7, representing titanium dioxide, highlights the compound’s significance across various sectors. Its versatility, efficacy, and widespread use attest to its importance in modern manufacturing and consumer products. However, ongoing research and regulatory scrutiny are essential to address safety concerns and ensure responsible use. As industries continue to innovate, the focus will likely shift toward sustainable and safer alternatives while maintaining the functional benefits that titanium dioxide offers.