UV Absorber 329

Group Plastic&Rubber Auxiliary Agents
Min. Order 25 kilogram
Terms of Payment L/C, Western Union, T/T, Paypal
Update Time 2019-12-13
Item specifics
AppearanceWhite powder
  • Description
  • Product review
Product Description
Ultraviolet absorber UV-329

 

Characterization: UV-329 is an ultraviolet light absorber of the hydroxyphenylbenzotriazole class, which is used as a light stabilizer for plastics and other organic substrates.

Chemical name : 2-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol

CAS number : 3147-75-9

Molecular formula: C20H25N3O

Molecular weight  : 323 g/mol

Applications  : UV-329 is an effective light stabilizer for a variety of plastics and other organic substrates.

Features/benefits: UV-329 protects polymers from UV radiation, helping to preserve the original appearance and physical integrity of molded articles, films, sheets, and fibers during outdoor weathering.

Appearance: White powder

Guidelines for use: The use levels of UV-329 range between 0.10 and 1.0%, depending on substrate and performance requirements of the final application. The product can be used alone or in combination with other light stabilizers, antioxidants, functional stabilizers and additives. The use of UV-329 in combination with hindered amine light stabilizers is particularly noteworthy in that a synergistic performance is often observed.

Melting Range :103-105°C

Solubility:

Solvent(20°C)

% w/w

Acetone

9

Chloroform

37

Cyclohexane

15

Ethyl Acetate

15

n-Hexane

6

Methanol

0.6

Methylene Chloride

38

Benzene

32

Water

< 0.01

Absorption spectrum: (Chlorform, 20mg/l)

 

UV-329 exhibits strong absorbance in the 300-400 nm region and minimal absorbance in the visible region (> 400 nm) of the spectrum. The absorption maxima are at 301 nm and 342nm

(ε = 14728.8 and 16666.8 L/mol·cm) in chloroform solution.

 

  Specifications:


Appearance:
White powder
Melting Point
101-106οC
Volatile matter
≤0.5%
Ash content
≤0.05%
Transmissirity
440nm≥97% 500nm≥98%
Purity
≥99%
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