UV absorber UV-329 (UV-5411) CAS NO.: 3147-75-9

Chemical Name: 2-(2’-hydroxy-5’-t-octylphenyl)benzotriazole

Chemical Structure:

Chemical Formula: C20H25N3O

Molecular Weight: 323

CAS NO: 3147-75-9

Specification:

Appearance: White to slightly yellowish crystalline powder or granule

Melting point: 103-107°C

Clarity of solution (10g/100ml Toluene): Clear

Color of solution (10g/100ml Toluene): 440nm 96.0% min

(Transmission): 500nm 98.0% min

Loss on drying: 0.3% max

Assay (by HPLC): 99.0% min

Ash: 0.1% max

Application: UV- 5411 is a unique photo stabilizer that is effective in a variety of polymeric systems: particularly in polyesters, polyvinyl chlorides, styrenics, acrylics, polycarbonates, and polyvinyl butyal. UV- 5411 is especially noted for its broad range UV absorption, low color, low volatility, and excellent solubility. Typical end-uses include molding, sheet, and glazing materials for window lighting, sign, marine and auto applications. Specialty applications for UV- 5411 include coatings (particularly themosets where low volatility is a concern), photo products, sealants, and elastomeric materials.

1. Unsaturated Polyester : 0.2-0.5wt% based on polymer weight

2.PVC:

Rigid PVC : 0.2-0.5wt% based on polymer weight

Plasticized PVC : 0.1-0.3wt% based on polymer weight

3.Polyurethane : 0.2-1.0wt% based on polymer weight

4.Polyamide : 0.2-0.5wt% based on polymer weight

Packing and Storage:

Package: 25KG/CARTON

Storage: Stable in property, keep ventilation and away from water and high temperature