Product Name: 2-(2H-Benzotriazol-2-yl)-4,6-ditertpentylphenol
Other Name: Ultraviolet absorbent UV-328
CAS No: 25973-55-1
MF: C22H29N3O
MW: 351.48500
Density: 1.08g/cm3
Boiling point: 469.1ºC at 760 mmHg
Melting point: 80-83°C
Flash point: 229ºC
Refractive index: 1.575
UN Number: Not dangerous goods.
UN Proper Shipping Name: Not dangerous goods.
Transport hazard class: Not dangerous goods.
Packing group: Not dangerous goods.
Specification
Appearance: Light yellow powder or cylindrical particles
Assay: ≥99%
Ash: ≤0.10%
Volatile matter: ≤0.50%
Transmittance: 460nm≥96%; 500nm≥97%
Application
This product is a high-efficiency UV absorber, which can effectively absorb 270-340 nm UV light, the light stability is similar to UV-326 and UV-327, but the product has good compatibility with resin, low thermal evaporation and high washing resistance.
This product is suitable for polyolefin (especially polyethylene), polyester, styrenic polymer, polyamide, polymethyl methacrylate, polycarbonate, elastomer and other polymers.
Package: Packed in cardboard drum lined with plastic bag, net weight 25kg/drum, can also be designed according to customer requirements.
Storage: UV-absorbing agent UV-328 is non-toxic, non-flammable, non-explosive, non-corrosive, and has good storage stability.
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