Yes, polypropylene (PP), denoted as recycling code #5, is recyclable in the United States. It is a thermoplastic polymer used in a wide array of applications, including packaging, textiles, automotive parts, and more. Recycling rates for PP have historically been lower compared to other plastics like PET (#1) and HDPE (#2) due to sorting challenges and lesser market demand for recycled PP. However, improvements in sorting technology and growing markets for recycled PP are enhancing its recyclability. Many curbside recycling programs now accept PP, but it's essential to check local regulations as acceptance varies. Efforts to increase the recycling of PP focus on enhancing collection systems, sorting technologies, and developing end markets for recycled PP products. Recycling polypropylene reduces reliance on virgin materials, conserves resources, and minimizes environmental impact.

Polypropylene itself is not listed on the California Proposition 65 list, which requires businesses to provide warnings about significant exposures to chemicals that cause cancer, birth defects, or other reproductive harm. However, additives or chemicals used during the manufacturing process of polypropylene products could potentially be on the Prop 65 list. It's important for manufacturers and consumers to be aware of specific substances in polypropylene items that might warrant warning labels under Prop 65. Businesses operating in California or selling to California residents should carefully review their products for compliance.

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.