Description

2-Hydroxy-4-(3-Triethoxysilylpropoxy)Diphenylketone is a specialized organosilane derivative that combines a benzophenone UV-absorber moiety with a reactive triethoxysilyl group. This unique bifunctional structure makes it a critical component for imparting durable light stability and enhanced adhesion to polymeric materials and coatings. It is primarily utilized by formulators and manufacturers in the polymer, advanced coating, and adhesive industries seeking to improve the long-term performance and weatherability of their products.

Application

• As a light stabilizer and coupling agent in UV-curable coatings and inks for enhanced durability.
• As a surface-modifying additive in silicone-based sealants and adhesives to improve bonding to various substrates.
• For the photostabilization of polymers such as polyolefins, polycarbonates, and acrylics.
• As a key intermediate in the synthesis of advanced polymeric materials with built-in UV protection.
• In the formulation of high-performance automotive and architectural coatings to prevent yellowing and degradation.
• To enhance the weather resistance of composite materials and fiber-reinforced plastics.

Basic Information

Product Name	2-Hydroxy-4-(3-Triethoxysilylpropoxy)Diphenylketone
CAS No.	79876-59-8
Molecular Formula	C26H38O6Si
Molecular Weight	474.67 g/mol
Synonyms	2-Hydroxy-4-(3-triethoxysilylpropoxy)benzophenone; UV Absorber 123; BP-3-TES; 2-Hydroxy-4-(3-triethoxysilylpropyloxy)benzophenone; Benzophenone-3-triethoxysilane; Light Stabilizer 123; 2-Hydroxy-4-(γ-triethoxysilylpropoxy)benzophenone; SilaBenzophenone-3
EINECS	Contact for details

Quality Control

Our production of 2-Hydroxy-4-(3-Triethoxysilylpropoxy)Diphenylketone adheres to stringent quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC for purity and NMR for structural confirmation, to ensure consistency and compliance with customer specifications. Certificates of Analysis (COA) documenting all critical parameters are available upon request.

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). Due to its hygroscopic nature, the container must be kept tightly sealed to exclude moisture. Keep away from incompatible materials such as strong acids and bases.

Specification

Item	Specification
Appearance	Light yellow to yellow viscous liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Silicon Content	5.8 - 6.2 %
Ethoxy Content	Contact for details
Volatile Matter	≤ 1.0 %

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