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

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

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.


  • 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

    • Product Detail

    Product Tags

    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
    UV Absorber UV-3638

    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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