2-Chlorothioxanthone丨CAS 86-39-5

2-Chlorothioxanthone is primarily used as a photoinitiator and photosensitizer in UV-curable systems. It is widely applied in the formulation of UV-curable coatings, inks, adhesives, and printing materials, where it promotes rapid polymerization upon exposure to UV light. In addition to industrial coatings and printing, it is utilized in the synthesis of photoreactive compounds and in analytical chemistry for studying photochemical reactions. Its structural features allow it to absorb light efficiently and transfer energy to other reactive species, making it suitable for applications in photoresists and polymer modification. Researchers also explore its use in organic electronics and photodynamic studies due to its stable thioxanthone chromophore and tunable photophysical properties.

The main benefits of 2-Chlorothioxanthone stem from its strong absorption in the UV region, high photostability, and efficient energy transfer capabilities. These properties enable fast and controlled curing of UV-sensitive formulations, reducing energy consumption and processing times in industrial applications. Its chlorine substitution improves solubility in organic media and enhances the photochemical efficiency of the compound, making it highly effective even at low concentrations. Additionally, it offers long-term stability in formulations and compatibility with a variety of monomers and polymers, which ensures consistent performance and high-quality end products. Its versatility and reliability make it a preferred choice in both research and industrial settings.