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2-(2-Hydroxy-3-5-di-tert-pentylphenyl)-2H-benzotriazole

  • Siwin-UV328

  • Siwin

  • Siwin-UA328

  • 25973-55-1

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Quantity:

Siwin-UA328

Ultraviolet Absorber


UV Absorber 328 is a strong absorber of ultraviolet radiation in the 290-400nmregion. It has good chemical stability, light color, little volatility, good compatibility with polyolefin and other resins, good storage stability.


Typical Physical Properties  

Chemical Name:2-(2-Hydroxy-3,5-di-tert-pentylphenyl)-2H-benzotriazole

Cas No.:25973-55-1

Appearance

Light yellow powder

Light transmittance

≥95% (460nm) ≥97% (500nm)

Molecular weight

351.5g/mol

Melting point

79-88℃

Volatiles

≤0.5%

Ash

≤0.1%


Applications

The product is mainly used in polyolefin, styrene monopolymer and copolymer, ABS, acrylic polymer, unsaturated polyester, thermoplastic polyurethane, polyacetal, PVB(polyvinyl butanal), epoxy and polyurethane two-component system. It can be used in combination with antioxidant and HALS to optimize the outdoor performance of products.


Packaging and Storage

Package: 25kg carton inner with plastic bag or as customer`s requirement.

Storage: Keep container tightly closed in a dry and well-ventilated place.


The use of proper protective equipment is recommended. Excess exposure to the product should be avoided. Wash thoroughly after handling.

All safety information is provided in the Safety Data Sheet.


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