With its high brightness and refractive index. titanium dioxide is a sought-after ingredient in many products. It can maintain the white. bright. and UV-resistant qualities of paints. lacquers. and plastics. Additionally. it acts as a colorant in food and cosmetics. enhancing the whiteness of processed foods. toothpaste. and sunscreen. Additionally. it serves as a photocatalyst to transform sunlight into chemical energy and has applications in reducing pollution in wastewater treatment plants. However. concerns regarding its safety when ingested or inhaled continue to arise.

Radiators are typically not made from polypropylene or polyethylene due to these plastics' thermal characteristics. These materials do not have sufficient heat resistance and conductivity for the high temperatures involved in a radiator's operation. Radiators must efficiently transfer heat from the hot coolant inside to the air outside. Metals such as aluminum or steel are commonly used materials because they have much higher thermal conductivity and can withstand the operational conditions of radiators. Polypropylene and polyethylene are more likely to be found in components that do not require high heat resistance or conductivity, such as some automotive fluid containers or ducts.

The number 3287.