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Technical Data Sheet of UV _234 Product Name:UV 234 Characterization UV 234 is a high molecular weightultraviolet light absorber (UVA) of the hydroxyl phenylbenzotriazole class, imparting outstanding light stability to avariety of polymers during its use. Chemical Name2-(2H-benzotriazol-2-yl)-4, 6- bis(1-methyl-1- phenylethyl) phenolCAS Number 70321-86-7 Structure Molecular weight 447.6Specification 1. APPEARANCE LIGHT YELLOW POWDER 2. ConTENT 99% MIN3. M.P. 137 ??? 141 DC 4. VOLATILE MATTER 0.5% MAX 5. ASH 0.1% MAX6. TRANSMITTANCE @ 460nm 97% MIN @ 500nm 98% MIN Applications UV234 is highly effective for polymers usually processed at hightemperatures such as polycarbonate, polyesters, polyacetal,polyamides, polyphenylene sulfide, polyphenylene oxide, aromaticcopolymers, thermoplastic polyurethane and polyurethane fibers,where loss of UVA is not tolerated as well as forpolyvinylchloride, styrene homo- and copolymers. Applicationsinclude molded articles, films, sheets and fibers. Features/Benefits UV 234 features low volatility, exceptional lightabsorbing characteristics and good compatibility in varioussubstrates. This makes the product especially suitable forapplications characterized by high surface area, such as films andfiber. It protects organic polymers as well as pigments from UVlight, improving and preserving the technical and visualperformance of such applications. UV 234 has world wide FoodContact Approvals in most polymers and is especially suitable inpackaging applications for food, consumer care products andpharmaceuticals, preserving the package contents from thedetrimental effects of light. Guidelines for use The use levels ofUV 234 range between 0.15 and 0.60%, depending on substrate andperformance requirements of the final application. Extensiveperformance data of UV 234 alone or in combination with otheradditiv