Ultraviolet Absorbent UV-366

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.