Description

Benzophenone#2,#3,#4,#5,#6 is a series of high-purity, specialized benzophenone derivatives. These compounds are valued for their role as effective photoinitiators and UV absorbers in advanced polymer formulations. They are essential for manufacturers in the coatings, inks, and photoresist industries seeking to enhance product performance and durability under light exposure. The CAS number for this chemical family is 9133-55-5.

Application

• UV-Curable Coatings & Inks: Acts as a key photoinitiator to enable rapid curing and cross-linking under UV light, improving surface hardness and chemical resistance.
• Photopolymer Printing Plates: Used in the production of plates for flexographic and letterpress printing, ensuring precise image reproduction and plate durability.
• Photoresists for Electronics: Serves as a photoactive component in photoresists for PCB (Printed Circuit Board) manufacturing and microelectronics.
• Adhesives & Sealants: Facilitates the light-induced polymerization process in UV-curable adhesive systems.
• Wood & Plastic Finishes: Provides efficient curing for clear coats and topcoats, resulting in high-gloss, scratch-resistant finishes.
• Optical Fiber Coatings: Contributes to the protective, UV-curable coatings applied to optical fibers.

Basic Information

Product Name	Benzophenone#2,#3,#4,#5,#6
CAS No.	9133-55-5
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Benzophenone derivatives (grades 2-6); Photoinitiator BP series; UV Absorber BP#2-#6; 2-Hydroxy-4-methoxybenzophenone derivatives; Oxybenzone derivatives; Light stabilizer 9133-55-5; Benzophenone-type photoinitiator
EINECS	Contact for details

Quality Control

Our Benzophenone#2,#3,#4,#5,#6 series is produced under a stringent quality management system. Each batch undergoes rigorous analytical testing, including chromatography and spectroscopy, to ensure consistent purity and performance as a photoinitiator. Certificates of Analysis (COA) documenting key parameters are available upon request to support your quality assurance protocols.

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. This product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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