Overview
Alkanolamines represent a significant class of organic raw materials characterized by the presence of both hydroxyl and amine functional groups. These bifunctional compounds bridge the gap between alcohols and amines, offering unique reactivity patterns that make them indispensable in numerous industrial processes. The most commercially important alkanolamines include monoethanolamine (MEA), diethanolamine (DEA), and triethanolamine (TEA), which form the ethanolamine subgroup. First developed in the early 20th century, alkanolamines have grown into essential building blocks for the chemical industry. Their production typically involves the reaction of ethylene oxide with ammonia, allowing for precise control over the degree of amination. This versatility in synthesis enables manufacturers to tailor products for specific applications ranging from gas scrubbing to personal care formulations.
Physical and Chemical Properties
Alkanolamines exhibit distinctive physical properties that stem from their dual functionality. Most are viscous liquids at room temperature with higher boiling points than their pure alcohol or amine counterparts, due to extensive hydrogen bonding. Their hygroscopic nature requires careful handling to prevent moisture absorption during storage and transportation. Chemically, alkanolamines display amphoteric behavior - they can act as weak bases through their amine group or weak acids through their hydroxyl group. This dual reactivity makes them excellent candidates for acid gas absorption processes. The compounds readily form salts with inorganic acids and can participate in esterification reactions. Their thermal stability varies by structure, with primary alkanolamines generally being less stable than secondary or tertiary derivatives.
Main Applications
The largest application of alkanolamines lies in gas treatment, where they serve as absorbents for acid gases like CO2 and H2S in natural gas processing and refinery operations. MEA-based solutions are particularly effective in 'sweetening' sour gas streams. In personal care products, alkanolamines function as pH adjusters, emulsifiers, and humectants in shampoos, creams, and cosmetic formulations. Industrial applications extend to metalworking fluids, where they provide corrosion inhibition and pH control. The pharmaceutical industry utilizes certain alkanolamines as intermediates in drug synthesis, while agricultural applications include their use in herbicide formulations. Recent developments explore their potential in carbon capture and storage (CCS) technologies, highlighting their environmental applications.
Safety and Storage
Proper handling of alkanolamines requires attention to their corrosive nature and potential health effects. Workplace exposure limits typically range between 3-10 ppm for various compounds. Engineering controls should include adequate ventilation, and personal protective equipment must include chemical-resistant gloves, goggles, and protective clothing. Storage considerations focus on preventing degradation and maintaining product quality. Stainless steel or polyethylene containers are preferred, with aluminum being unsuitable due to corrosion potential. Containers should be kept tightly closed and protected from extreme temperatures. Secondary containment is recommended for bulk storage to manage potential spills. Shelf life generally exceeds one year when stored properly, though discoloration may indicate degradation in some cases.
B2B Procurement Guide
When sourcing alkanolamines, buyers should first specify the required purity level - technical grade for industrial applications or higher purity for pharmaceutical uses. Key specifications include amine content, water percentage, and color index. Packaging options range from 200L drums to ISO tank containers for bulk quantities. Quality certifications to request include ISO 9001 and relevant chemical safety documentation. For international shipments, ensure compliance with transportation regulations (IMDG for sea, IATA for air). Lead times vary by product and quantity, with spot market availability common for standard grades. Consider establishing long-term supply agreements to mitigate price volatility in the ethylene oxide feedstock market.
Related Manufacturers
- 主营：DMF、DMAC、四甲基胍、二丙酮醇、丙二醇、乙二醇、甲醇、十二醇、己二醇、二乙醇胺、马来酸酐、甲酸、柠檬酸、甘油、四氢呋喃、碳酸丙烯酯、吐温、无水氯化钙、乙酸乙酯、氢氧化钠、司盘、过硫酸钠、氧化钙、氯化钾
- 主营：优氯净、甘氨酸、磷酸硼、苯甲醇、一乙胺、叔丁醇、异丙醇、水杨酸、硫酸锰、平平加、正辛烷、磷酸氢、白僵菌、蛋白胨、碳酸镁、磷酸铝、异丁酸、硫化钡、木质素、醋酸钡、硫化钙、氯化锌、黄原胶、磺酸钙、氟化镁
- 主营：胰蛋白胨、骨蛋白胨、牛肉浸膏、单乙醇胺、三乙醇胺、三甘醇、福美钠、漂粉精、漂白精、次氯酸钙、防辐射钡粉、茶皂素、大苏打、小苏打、甘氨酸、九水硫化钠
- 主营：蛋白胨、牛骨蛋白胨、福美钠、单乙醇胺、三乙醇胺、强氯精、氯化铜、水玻璃、防辐射硫酸钡
- 主营：山梨酸钾、羟基嘧啶、吡唑啉酮、乙酰苯胺、清凉茶酸、山梨酸钙、磺酸苯基、叔丁基锂、双乙烯酮、基氨基锂、氯乙酰氯、三正丁基、四羟甲基、甲基苯基、氯羟吡啶、硫酸磷脲
- 主营：缓蚀剂、国标工业、无味工业、二乙醇、乙醇胺、141-43-5cas、助磨剂醇胺、零售库存、直营工业、浓度化工、莱沃化工、工艺先进、物美价廉、高质量工业、气体净化剂、扬子巴斯夫、高纯度国标、乳化剂桶装、添加剂工业、表面活性剂
- 主营：乙酸铵、阻燃剂、己二酸、乙醇厂家、电容器、钼酸铵、磷酸一铵、氢氧化铝、聚合催化剂、表面活性剂、三氧化二锑、工业清洗剂、纸的柔软剂、氮磷复合肥料、粉末涂料固化剂、食品高级发酵剂
- 主营：阻聚剂、四甲基、催化剂、辛二醇、有机合成、3-二羟基萘、十油酸酯、硅化合物、光引发剂、十二酸己酯、月桂酸己酯、生物缓冲剂、表面活性剂、硫代卡巴肼、氨基甲酰甲基
- 主营：异戊烯醇、原料乙二醛、硼酸锂、硫酸锰、着色染料
- 主营：双盐酸肼、单盐酸肼、水溶羊毛脂、5-二甲基海因、三硫代碳酸钠、福美钠、苯并咪唑、纤维醋法酯
- 主营：甘氨酸、阻燃剂、胶黏剂、3282-24-4、2768-02-7、7377-08-4、4865-84-3、5471-63-6、丙二胺、2799-16-8、蒽甲酸、退除剂、中性红、肉桂醛、退镍液、乙氧基、阻燃毯、草酸铜、抛光盐、戊二酸、插入管、碳化硼、蓝钨粉、硫酸镝、二氨基