UV Absorber UV-366 CAS NO.: 169198-72-5

Chemical name: 2 - (2'-hydroxy-4'-benzoic acid phenyl) -5 chloro-2H-benzotriazole Molecular formula: Molecular weight:365.77 CAS NO.: 169198-72-5 Chemical structural formula: C₁₉H₁₂ClN₃O₃ Technical index: Appearance: Solid, nearly white Assay Content: ≥98.5 %(HPLC) Melting point: 183.1-184.5 C Ash: ≤ 0.5% Use: Has big molecular weight, is non-volatile, resistance to extracted; manufactured easily. A benzotriazole UV absorber that can inhibit oxidation degradation reactions, protect fiber material, and improve textile product grade; this is a new generation of UV absorbers with patented technology and won 2007 state-level key product certification, reaches international level. Advantages: Efficient anti-UV product, with UV molar extinction coefficient 2.6 times that of benzophenone UV absorbers, and 1.8 times that of conventional benzotriazole (replace alkylphenol derivatives) class of UV absorbers. Strong absorption, especially fiber; absorption of microfiber is stronger than that of triazine ultraviolet absorber. Packing and Storage: Package: 25KG/CARTON Storage: Stable in property, keep ventilation and away from water and high temperature.