Polypropylene (PP) is a widely used plastic in various applications, including packaging, textiles, and medical devices due to its resistance to chemicals, water, and electricity. Generally considered safe, PP can pose health risks under certain conditions. The primary concern is with the manufacturing process and the potential release of volatile organic compounds (VOCs), which can cause respiratory irritation and other health issues upon inhalation. Additionally, when heated to high temperatures, PP can release plasticizers and other additives into food and beverages, raising concerns about ingestion of potentially harmful substances. However, under normal use conditions, polypropylene is unlikely to pose significant health risks to humans. It is essential to handle polypropylene products according to manufacturers' instructions, especially when used in food containers or medical applications, to minimize any potential hazards.

It is also known as titanium. but it belongs to the transition metal family in the periodic table.

Titanium dioxide offers a range of valuable properties that make it a popular choice in many different industries. With its high refractive index and strong light scattering ability. it is well-suited for use in sunscreen. paint. cosmetics. and other products. Its UV blocking function makes it an ideal ingredient in outdoor paint and sun protection products. effectively shielding against the harmful effects of sunlight.