Omnistab UV 328

· Chemical Name:2-(2H-Benzotriazol-2-yl)-4,6-ditertpentylphenol

· CAS：25973-55-1

· Molecular formula:C22H29N3O

· Molecular weight:351.49

TDS Download： MSDS Download：

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Structural formula:

Applications

Can be used in high performance plastics and other organic stabilizer. Recommended for styrene and styrene copolymer, acrylic polymer, unsaturated polyester, polyvinyl chloride, polyolefin, polyurethane.
328 has an excellent UV absorption, low initial color, good compatibility for a variety of material, and also with a good solubility and low volatile for the plasticizer and monomer.

Specifications

Item	Specification
Assay (%)	99.00 min
Melting Point (℃)	79.00-87.00
Volatile (%)	0.50 max
Ash(%)	0.10 max
Transmittance(%)
460nm	97.50 min
500nm	98.00 min

Storage and transportation

Keep container tightly closed. Avoid ingestion and inhalation.
25KG Drum or as customer's requirements.

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Omnistab UV 328

Omnistab UV 328

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