UV Absorber UV-328

Short Description:

UV Absorber UV-328 is mainly used in polyvinyl chloride, polyurethane, polyester resin and others. Max absorption wave length range is 345nm. Low toxicity and used in food packing materials.


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

Specification
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%

Application
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.

Usage
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

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


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