For chemists and product developers working with UV-curable materials, a thorough understanding of the photoinitiator’s technical properties is crucial for optimizing formulations. Photoinitiator DETX, CAS number 82799-44-8, is a widely utilized Type II photoinitiator known for its efficiency and versatility. As a premier manufacturer and supplier of specialty chemicals, we provide insights into the key technical aspects of DETX that make it a preferred choice.

Chemical Identity and Structure: Photoinitiator DETX, chemically known as 2,4-Diethyl-9H-thioxanthen-9-one, has a molecular formula of C17H16OS and a molecular weight of 268.37. Its molecular structure dictates its absorption characteristics and reactivity, making it highly effective in initiating free-radical polymerization. The presence of the thioxanthone chromophore allows for efficient absorption of UV light.

Absorption Wavelength: DETX typically exhibits absorption peaks in the UV-A and UV-B regions, commonly cited between 261nm and 385nm. This broad absorption range makes it compatible with various UV light sources, including mercury lamps and UV LEDs, which are common in industrial curing processes. This compatibility is a significant advantage when tuning curing equipment to specific formulations.

Physical Properties: In terms of appearance, Photoinitiator DETX is a yellow to yellowish-green crystalline powder. Its melting point generally falls between 66-75°C, indicating a stable solid form at room temperature. The low volatile content (typically ≤0.5%) ensures that minimal material is lost during processing and curing, contributing to consistent formulation weights.

Performance and Synergy: As a Type II photoinitiator, DETX requires a hydrogen donor, often a tertiary amine synergist, to efficiently generate free radicals. This synergistic combination enhances curing speed and efficiency, particularly in pigmented systems where UV light penetration can be limited. This makes DETX an excellent choice for a wide array of applications, from clear coats to colored inks and adhesives.

Sourcing and Quality: When you need to buy Photoinitiator DETX, it is important to partner with a reliable supplier. We, as a dedicated Chinese manufacturer, offer Photoinitiator DETX with a guaranteed purity of ≥99.0%. We provide comprehensive technical data sheets (TDS) and certificates of analysis (COA) to ensure you receive a product that meets the highest standards. Our competitive prices and commitment to quality assurance make us an ideal partner for your chemical needs.

Understanding these technical properties allows formulators to leverage Photoinitiator DETX effectively, achieving optimal results in their UV-curing applications. Rely on our expertise as a leading manufacturer to supply you with this essential chemical.