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Linsorb UV 329

Chemical Name:


Formula C20H25N30  uv-329 Tinuvin 329, Cyasorb UV 5411, Eversorb 72, CAS 3147-75-9 chemical structure info@additivesforpolymer.com
Molecular Weight 323
CAS#      3147-75-9


Appearance slightly yellow powder
Melting point 103-105℃
Flashpoint > 150°C
Solubility(20℃) acetone 9
benzene 32
chloroform 37
cyclohexane 15
ethyl acetate 15
n-hexane 6
methanol 0.6
  water < 0.01

>Features of UV 329 are hydroxyphenyl-benzotriazole UVA with excellent spectral coverage in the UV region; Good photo permanence; Improves exterior durability of ambient and low-temperature cured coatings. Used as Tinuvin 329, Cyasorb UV 5411, Eversorb 72 equivalent.

>UV 329 exhibits strong absorbance in the 300–400nm region and minimal absorbance in the visible region (> 400 nm) of the spectrum.

>Protect a variety of polymeric systems, particularly in polyesters, polyvinyl chlorides, styrenics, acrylics, polycarbonates, and polyvinyl butyral during outdoor weathering. Typical end-use applications include molded items, extruded sheets, glazing materials for window lighting, signs, marine, and auto applications.

>UV 329 can be used alone or in combination with other additives such as HALS and antioxidants.

>Typical use levels range between 1.0 and 3.0%, depending on the substrate and performance requirements of the final applications.

Handling and Safety: 

>Not intended for use in applications that come in contact with food or in products which may come in contact with mucous membranes or abraded skin or be implanted into the body.

>For additional handling and toxicological information, please consult us for Maternal Safety Date Sheet.


25kg per fiber drum, 9*3 layer 27drum per pallet,or according to customers’ requirements.

Linsorb 329 TDS

Linsorb 329 tds

Additional information

Weight 25 kg
Dimensions 650 × 450 × 150 mm