Chemical Name: 2-(2`-Hydroxy-3`,5`-dipentylphenyl) benzotriazole CAS No: 21615-48-6
Molecular Formula: C22H29N3O
Appearance: White to light yellow powder
Assay:≥99%
Melting point: 80 -83ºC
Loss on drying:≤0.5%
Ash:≤0.1%
Light Transmittance: 440 nm≥97%,500nm≥98%.
Use: As the ultraviolet absorption agent, it is available to polyolefine, polystyrene, PVC, polyurethane, polyester etc. It is excellent in benzotriazole kind of uv-absorber. The max. absorbing wavelength is 345nm.The general consumption is about 1%.Note: Toxicity is low. FDA(USA)has permitted it to be used as the foodstuff packing material.