CAS No. [70321-86-7]
Chemical name: 2-[2-hydroxy-3,5-di(1,1-dimethylbenzyl)phenyl] 2H-benzotriazole
Molecular formula: C₃₀H₂₉N₃O
Molecular weight: 447.58
Specification:
      Appearance: light yellow powder
      Assay: 99% min.
      Melting point: 137.0-141.0 deg C
      Loss on drying: 0.5% max.
      Ash: 0.1% max.
      Transmittance:
            at 460nm:  97% min.
           at 500nm:  98% min.
Packing: 20/25kg fibre drum
Usage:
      It is highly effective for polymers usually processed at high temperatures, such as polycarbonate, polyacetual, polyamides, polyphenylene sulfide, polyphenylene oxide, aromatic copolymers, thermoplastic polyurethane, polyurethane fibers.
Molecular structure: