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UV Absorber UV-3638 for PC, PET CAS NO.: 18600-59-4

Chemical name 2,2'-(1,4-phenylene)bis[4H-3,1-benzoxazin-4-one]
Molecular formula C22H12N2O4
Molecular weight 368.34
CAS NO. 18600-59-4
Chemical structural formula Technical index
Appearance White to off- white crystalline powder
Content 98%min
Melting point 310℃ min 
Ash 0.1%max
Loss on drying 0.5% max
Applications UV- 3638 offers very strong and broad UV absorption with no color contribution. Possesses very good stabilization for polyesters ,polycarbonates and Nylon. Provides low volatility. Imparts high UV screening efficiency. 1. PET / PETG , Polyethylene Terephthalate 2. PC, Polycarbonate 3. Fibers and Textiles Packing and Storage Package: 25KG/CARTON Storage: Stable in property, keep ventilation and away from water and high temperature.

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