UV-328

Chemical Name: 2-(2'-Hydroxy-3', 5'-di-tert-amylphenyl) benzotriazole

Synonyms: 2-(2H-benzotriazol-2-yl)-4,6-ditertpentylphenol

Formula: C₂₂H₂₉N₃O

Structure:

CAS NO.: 25973-55-1

Molecular Weight: 351.5

Appearance: Yellowish powder or cylindrical granule

Purity: ≥99%

Melting Point: 79-87 ^°C

Ash: ≤0.1%

Loss On Drying: ≤0.5%

Transmittance: 460 nm≥96% 500 nm≥97%

Advantage and Application:

1. This product is a high efficient UV absorber, which can effectively absorb 270-340
nm UV light.

2. The light stability is similar to UV-326 and UV-327, but this product has good dissolubility
with the resins. Its heat volatility is low and its durability to washing is very good.

This product is suitable for polyolefin (especially PE), polyester, styrene polymers,
polyamide, PMMA, PC, elastomers, etc.

Package: 25KG cartons or drums

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