Overview
4-Diethylthioxanthone (DETX) is a sulfur-containing organic compound primarily employed as a photoinitiator in UV-curing applications. Its molecular structure enables efficient absorption of UV light, generating free radicals that initiate polymerization reactions. DETX is favored in industries requiring rapid curing, such as printing and coatings, due to its high reactivity and compatibility with various monomers. First synthesized in the late 20th century, DETX has become a staple in photochemistry. Its role in reducing energy consumption and improving production speed makes it a critical component in modern manufacturing processes, particularly where environmental regulations limit solvent-based alternatives.
Physical and Chemical Properties
DETX appears as a yellow crystalline powder with a melting point of 70-72°C. It exhibits strong absorption in the UV-A range (320-400 nm), making it effective for light-induced reactions. The compound is soluble in common organic solvents but has low water solubility, which minimizes environmental leaching risks. Chemically, DETX is stable under normal conditions but degrades under prolonged UV exposure. Its molecular weight (268.37 g/mol) and low volatility contribute to ease of handling in industrial settings. The sulfur atom in its thioxanthone core enhances its photoinitiating efficiency compared to non-sulfur analogs.
Main Applications
DETX is extensively used in UV-curable coatings for wood, plastics, and metals, providing durable finishes with rapid curing times. In the printing industry, it serves as a photoinitiator for inks, ensuring high-resolution patterns and adhesion. Dental composites also utilize DETX to harden restorative materials under UV lamps. Another niche application is in adhesives, where it enables bonding without heat, preserving heat-sensitive substrates. The compound’s versatility extends to 3D printing resins, where precise curing is essential for layer-by-layer fabrication.
Safety and Storage
DETX requires careful handling due to potential skin and eye irritation. Workers should use gloves, goggles, and ventilation to minimize exposure. Although not classified as highly toxic, prolonged contact may cause sensitization, warranting precautions under OSHA or REACH guidelines. Storage recommendations include airtight containers in cool (below 25°C), dark environments to prevent degradation. Incompatible with strong oxidizers, DETX should be segregated from reactive chemicals. Spills should be contained using inert absorbents and disposed of as hazardous waste.
B2B Procurement Guide
When procuring DETX, prioritize suppliers with documented quality control, such as ISO 9001 certification. Request certificates of analysis (CoA) to verify purity (typically ≥98%) and confirm the CAS number (82799-44-8) to avoid counterfeit products. Bulk purchases (25 kg drums) often reduce costs by 10-15%. Evaluate logistics options: DETX is not hazardous for transport under UN regulations but may require temperature-controlled shipping in hot climates. Negotiate lead times, as supply chains for specialty chemicals can face delays. Consider alternative photoinitiators like ITX for cost-sensitive projects.
Related Manufacturers
- 主营：磷钼酸、艾拉莫德中间体、甲基丙二酸、6-二羟基吲哚、光引发剂、苯芴醇、溴芬酸钠中间体、樟脑醌、钼酸钾、丝素蛋白、盐酸胍、β-丙氨酸甲酯盐酸盐、聚二羟基吲哚、7-去氢胆固醇、甘氨胆酸钠盐、半叶素、胆固醇、2-辛基十二醇、蛋白酶K、D-荧光素钾盐、光引发剂LAP、BIS-TRIS、甲基丙烯酸氧杂环丁烷
- 主营：乙基黄原酸钾、乙酸龙脑酯、聚苯乙烯磺酸钠、2-十一酮
- 主营：硼酸酐、阻聚剂、己二酸、24、氯化锂、发泡剂、乙二醇、醋酸铜、硅酸钠、正癸醇、新癸酸、环烷油、腰果酚、十二醇、酒石酸、碳酸锂、三甘醇、油菜酸、二甘醇、碳酸钾、甲酸钠、硅酸镁、棕榈油、6-氯嘌呤、微晶石蜡、磷酸一铵
- 主营：抗氧剂、乳化剂、苯扎氯铵、二乙基硫杂蒽酮、烷基二甲基、氢化蓖麻油、表面活性剂、双链季胺盐、聚氧乙烯醚、二丁基羟基甲苯、甘油聚氧丙烯醚、十二烷基硫酸钠、树脂、助剂
- 主营：架桥剂、YW100 锂萃取剂、端羧基液体丁腈橡胶、二乙基硫杂蒽酮、10-羟基癸酸、苯乙烯磷酸、肉豆蔻酸镁、硬脂酸钴、全氟三丁胺、乙烯基磷酸二乙酯、磷酸锰铁锂、β-磷酸三钙、十一烯酸、钨酸铝、1-乙炔基环已醇、间二异丙苯、锂硅合金、溴甲酚绿、生物活性玻璃、溴代海因树脂颗粒、红铝、龙涎酮、原丁酸三甲酯
- 主营：异辛醇、乳化剂、乙烯醚、基羟乙基、醚羧酸、脂肪醇、分散剂、染色助剂、聚乙二醇、异构醇醚、泊洛沙姆、椰油酰胺、烷基糖苷、特辛基酚、聚氧乙烯、嵌段聚醚、单油酸酯、异构十三醇、丙烯磺酸钠、氢化蓖麻油、丙烯酰胺基、醇醚葡糖苷、低泡渗透剂、甲酯乙氧基、癸基葡糖苷
- 主营：杜仲素、对位酯、丙烯酸酯、乙基麦芽酚、二氧化硫脲、饲料添加剂、油酸基硬脂酸、二苯基硅二醇
- 主营：聚苯胺、脯氨酸甲酯盐酸盐、苄基三甲基氯化铵
- 主营：二乙基硫杂蒽酮、麦芽糖酸、苯氧基环磷腈、甲巯基四氮唑
- 主营：24、阿昔洛韦侧链、化工原料
- 主营：苄基三乙基氯化铵、苄基三甲基氯化铵
- 主营：橡胶油、白芷油、7782-92-5、pbtcaona4、2905-60-4、1739-84-0、艾叶油、二甲基、桉树醇、5989-81-1、重质苯、活性炭、1305-62-0、1192-62-7、安息油、9005-32-7、正辛烷、7775-27-1、8050-09-7、7786-30-3、黄糊精、6920-22-5、三辛胺、1897-52-5、7727-21-1
- 主营：乙二醇、二甲基亚砜、丙二醇、4-丁二醇、精对苯二甲酸、己二酸、聚乙烯醇、聚乙二醇、木质素、甘油、三甘醇、己内酰胺、叔十二硫醇、白油、对苯二甲酸二甲酯
- 主营：糖精钠 128-44-9、水杨酸钠 54-21-7、硫化钴 12013-10-4、聚乙烯胺、烯丙基磺酸钠、70693-62-8 过硫酸氢钾
- 主营：肉桂醛、肉桂酸、汉防己甲素、24、阻燃剂、褪黑素、甘氨酸、增塑剂