UV Absorber UV-328

Short Description:

Product Detail

Product Tags

Chemical Name: 2-(2'-Hydroxy-3',5'-dipentylphenyl)benzotriazole
CAS NO.:25973-55-1
Molecular Formula:C22H29N3O
Molecular Weight:351.48516

Appearance: white to light yellow powder
Content: ≥ 99%
Melting point: 80-83°C
Loss on drying: ≤ 0.5%
Ash: ≤ 0.1%
Light transmittance :440nm≥96%, 500nm≥97%

This product is mainly used in polyvinyl chloride, polyurethane, polyester resin and others. Max absorption wave length range is 345nm.
Toxicity: low toxicity and used in food packing materials.

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

Package and Storage
1.25kg carton
2.Stored in sealed, dry and dark conditions

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