Description

2-(2H-Benzotriazole-2-Yl)-5(1-Ethylbutoxy)-Phenol is a high-performance benzotriazole derivative widely recognized for its exceptional light-stabilizing properties. This compound is critical for protecting polymers and coatings from UV-induced degradation, thereby extending product lifespan and maintaining aesthetic quality. It is an essential additive for manufacturers in the plastics, automotive coatings, and packaging industries seeking to enhance the durability of their materials.

Application

• Primary UV light stabilizer for polyolefins, including polypropylene (PP) and polyethylene (PE).
• Critical additive in automotive coatings and industrial paints to prevent color fading and gloss loss.
• Enhances weatherability in PVC profiles, siding, and other construction materials.
• Used in agricultural films to protect both the film structure and the crops beneath.
• Stabilizer for adhesives, sealants, and synthetic fibers against sunlight exposure.
• Protective component in packaging materials to prevent content degradation.

Basic Information

Product Name	2-(2H-Benzotriazole-2-Yl)-5(1-Ethylbutoxy)-Phenol
CAS No.	15618-85-6
Molecular Formula	C20H25N3O2
Molecular Weight	339.43 g/mol
Synonyms	2-(2H-Benzotriazol-2-yl)-5-(1-ethylpentyloxy)phenol; Phenol, 2-(2H-benzotriazol-2-yl)-5-(1-ethylpentyloxy)-; UV-329; Tinuvin 329; Bumetrizole; 2-(2'-Hydroxy-5'-tert-octylphenyl)benzotriazole (related analog); Light stabilizer 329; Benzotriazole UV absorber 329
EINECS	Contact for details

Quality Control

Our production of 2-(2H-Benzotriazole-2-Yl)-5(1-Ethylbutoxy)-Phenol adheres to stringent quality management protocols. Every batch is analyzed using advanced techniques like HPLC to ensure high purity and consistent performance. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical properties is provided with each shipment to guarantee specification compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from heat sources and incompatible materials. Due to its light-sensitive nature, containers should be kept in the original packaging or opaque containers until use.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 99.0%
Melting Point	100 - 105 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Transmittance	≥ 95% (425 nm) ≥ 97% (500 nm)

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