Chemical name: 2- (2'-Hydroxy-5'-tert-octylphenyl)benzotriazole
CAS No.:3147-75-9                           
Molecular formula:C20H25N3O
Molecular weight:323                          
                                                                    
Appearance: White powder
Melting point,℃:103-105
Assay (HPLC), %: ≥99
Ash, %: ≤0.1
Loss on drying, %: ≤0.3
Transmittance   450nm≥98%     
500nm≥99%

                                                                    
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