Description

2-Ethylhexyl 3-[3-tert-Butyl-4-Hydroxy-5-(5-Chloro-2H-Benzotriazol-2-Yl)Phenyl]Propionate is a high-performance, low-volatility liquid benzotriazole ultraviolet (UV) light absorber. This compound matters for its exceptional ability to protect polymers and coatings from photodegradation, thereby extending product lifespan and maintaining aesthetic properties. It is primarily needed by manufacturers in the plastics, coatings, and adhesives industries seeking to enhance the weatherability and durability of their formulations.

Application

• As a UV stabilizer in polyolefins (PP, PE) and engineering plastics (PVC, PC, ABS) to prevent yellowing and embrittlement.
• For enhancing the lightfastness of automotive coatings, industrial paints, and wood finishes.
• In the stabilization of adhesives and sealants against degradation from outdoor exposure.
• As a protective additive in agricultural films to extend their functional service life under sunlight.
• For use in packaging materials to protect contents and maintain the integrity of the packaging.
• In synthetic fibers and textiles to improve resistance to UV-induced strength loss and color fading.

Basic Information

Product Name	2-Ethylhexyl 3-[3-tert-Butyl-4-Hydroxy-5-(5-Chloro-2H-Benzotriazol-2-Yl)Phenyl]Propionate
CAS No.	83044-90-0
Molecular Formula	C28H38ClN3O3
Molecular Weight	500.08 g/mol
Synonyms	UV-329; Tinuvin 329; 2-(2'-Hydroxy-5'-tert-octylphenyl)benzotriazole; Octrizole; 5-Chloro-2-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol, 2-Ethylhexyl ester; 2-Ethylhexyl 3-(3-tert-butyl-4-hydroxy-5-(5-chlorobenzotriazol-2-yl)phenyl)propionate; 2-(3'-tert-Butyl-2'-hydroxy-5'-(2-octyloxycarbonylethyl)phenyl)-5-chlorobenzotriazole
EINECS	Contact for details

Quality Control

Our 2-Ethylhexyl 3-[3-tert-Butyl-4-Hydroxy-5-(5-Chloro-2H-Benzotriazol-2-Yl)Phenyl]Propionate undergoes rigorous quality testing to ensure compliance with industry standards. We provide comprehensive quality assurance, and Certificates of Analysis (COA) detailing purity, identity, and key physical parameters are available upon request for every batch.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from heat sources and incompatible materials.

Specification

Item	Specification
Appearance	Light yellow to yellow viscous liquid
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Absorbance (λ max)	300 - 360 nm
Volatile Matter	≤ 0.5%
Color (Gardner)	≤ 4

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.