Understanding the synthesis and characterization of key chemical intermediates is crucial for developing advanced materials. 4-Benzoylphenyl Acrylate (CAS 22535-49-5) is a vital photoinitiator, and its precise preparation and identification are paramount for its effective application in UV curing and polymer synthesis. As a leading manufacturer and supplier, we are committed to providing high-purity products and detailed technical information to support your research and industrial needs.

The typical synthetic route for 4-Benzoylphenyl Acrylate involves the esterification reaction between acrylic acid derivatives and 4-benzoylphenol. A common method employs the reaction of 4-benzoylphenol with acryloyl chloride in the presence of a base, such as pyridine or triethylamine, to neutralize the hydrochloric acid produced. Alternatively, direct esterification using acrylic acid catalyzed by an acid, or employing coupling agents like dicyclohexylcarbodiimide (DCC), can also yield the desired product. Purity validation is a critical step in ensuring the efficacy of the photoinitiator. Analytical techniques like High-Performance Liquid Chromatography (HPLC) are employed, often using a reversed-phase C18 column with a mobile phase gradient of acetonitrile and water, to determine the purity levels. Our manufacturing process ensures high purity, typically exceeding 98%.

Spectroscopic characterization plays a pivotal role in confirming the identity and structure of 4-Benzoylphenyl Acrylate. Nuclear Magnetic Resonance (NMR) spectroscopy is indispensable. In ¹H NMR, characteristic signals include aromatic protons in the region of 7.2–8.1 ppm, the distinct signals of the acrylate vinyl protons typically found between 5.8–6.5 ppm, and the signal from the benzoyl carbonyl group which may appear around 12.3 ppm if it undergoes specific interactions, though often implicitly accounted for by the aromatic region. Fourier-Transform Infrared (FTIR) spectroscopy reveals key functional groups: a strong absorption band around 1730 cm⁻¹ for the ester carbonyl (C=O) and another strong band around 1660 cm⁻¹ for the benzophenone ketone carbonyl. UV-Visible (UV-Vis) spectroscopy is also important, showing characteristic absorption around 290 nm due to the benzophenone moiety, which is directly related to its photo-initiating activity. These characterization methods ensure the quality and consistency of the product we supply.

The physical properties of 4-Benzoylphenyl Acrylate also guide its handling and application. It typically appears as a white to off-white powder. Its melting point is reported around 48.5 °C when purified from hexane, though variations can occur based on polymorphic forms or residual solvents. Understanding these properties is essential for safe storage, typically at 2-8 °C in amber vials to prevent photodegradation and premature polymerization. As your trusted chemical supplier, we provide comprehensive specifications and support to help you utilize 4-Benzoylphenyl Acrylate effectively in your product development. We are a reliable source from China, offering competitive pricing for this vital chemical.

The successful synthesis and rigorous characterization of 4-Benzoylphenyl Acrylate are fundamental to its role as a high-performance photoinitiator. By understanding its chemical structure and properties, manufacturers can optimize its use in UV curing applications, leading to improved material performance and innovative product development. We are committed to supporting these advancements by providing exceptional quality chemicals and detailed technical expertise.