UV Absorber UV-320

Short Description:

Uv-320 is a highly effective light stabilizer, which is widely used in plastics and other organics, including unsaturated polyester, PVC, PVC plasticizers, etc. especially in polyurethane, polyamide, synthetic fibers and resins with polyester and epoxy.

Product Detail

Product Tags

Chemical Name: 2-(2H-benzotriazol-2-yl)-4,6-di-tert-butylphenol
CAS NO.:3846-71-7
Molecular Formula:C20H25N3O
Molecular Weight:323.4


Appearance:light yellow powder
Content: ≥ 99%
Melting point: 152-154°C
Loss on drying: ≤ 0.5%
Ash: ≤ 0.1%
Light transmittance: 440nm≥97%, 500nm≥98

Toxicity: low toxicity,rattus norvegicus oral LD 50 >2g/Kg weight.

General dosage:

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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