紫外线吸收剂Lowilite 22 Ultraviolet Light Absorber Lowilite 22 is an ultraviolet light absorber belonging to the benzophenone class of UVAs. 2-Hydroxy-4-octoxybenzophenone CAS Reg. Number [1843-05-6] Typical Properties Appearance Pale yellow powder Molecular weight 326 Specific Gravity @ 25°C, g/ml 1.16 Melting range, °C 47 - 50 Flash point, °C 475 Thermogravimetric Analysis ( 10 mg @ 10°C/minute under N2) Weight Loss, % 5 10 25 Temperature,°C 220 233 255 Solubility @ 25°C (g/100 ml solvent) Water 0.5 Toluene 70 Benzene 70 Dioctylphthalate 20 Methanol 2 Methyl Ethyl Ketone 60 Ethanol 2 n-Hexane 25 Ethyl Acetate 50 n-Heptane 50 O OH OC8H17 Acetone 70 Lowilite 22 is effective in polyolefins, including low and high density polyethylene, polypropylene, olefin copolymers (EPR, EPDM, EVA), and other polymers including polyvinyl chloride, polyesters, natural and synthetic resins, polystyrene and ABS.
