Overview
Ethylenediaminetetraacetic Acid (EDTA) is a synthetic compound renowned for its chelating properties, meaning it can bind and neutralize metal ions. Initially developed in the 1930s, EDTA has become indispensable in various industries due to its versatility and effectiveness. EDTA is commonly available in salt forms such as disodium EDTA or calcium disodium EDTA, which enhance solubility and application range. Its ability to sequester metal ions makes it valuable in preventing metal-catalyzed degradation in products and processes.
Physical and Chemical Properties
EDTA appears as a white, odorless crystalline powder with moderate solubility in water. It decomposes at 240°C without melting, releasing carbon dioxide and nitrogen oxides. Chemically, EDTA is a hexadentate ligand, capable of forming stable complexes with most metal ions, including calcium, magnesium, and heavy metals like lead. This property is pH-dependent, with optimal chelation occurring in alkaline conditions.
Main Applications
In water treatment, EDTA removes scale-forming cations like calcium and magnesium, improving boiler efficiency. It also prevents metal ion contamination in textile and paper manufacturing. The food industry uses EDTA as a preservative (E385) to retain color and flavor by chelating trace metals that cause oxidation. In medicine, EDTA treats heavy metal poisoning and stabilizes pharmaceutical formulations. Cosmetics utilize it to enhance product shelf life by inhibiting metal-induced rancidity.
Safety and Storage
EDTA is generally low in toxicity but can cause irritation upon contact with skin or eyes. Proper handling requires gloves, goggles, and ventilation to minimize exposure risks. Store EDTA in tightly sealed containers away from moisture and incompatible substances like strong oxidizers. Shelf life exceeds two years under recommended conditions, but periodic checks for clumping or discoloration are advisable.
B2B Procurement Guide
When sourcing EDTA, prioritize suppliers with ISO or GMP certifications to ensure quality consistency. Key specifications include purity (≥99%), heavy metal content (<10 ppm), and particle size. Bulk purchases (tonnage) often reduce costs by 10–20%. Consider regional logistics, as shipping regulations may apply due to EDTA’s classification as a chemical substance. Request SDS and technical data sheets for compliance verification.
Related Manufacturers
- 主营：氧化钙、双飞粉、石灰块、复合碱、螯合碱、氢氧化钙、重质碳酸钙
- 主营：氢氧化钙、重钙粉、重质碳酸钙、螯合碱、复合碱、氧化钙、熟石灰、石灰块、白晶砂、双飞粉
- 主营：破络剂、去除剂、固体脱色剂、废水粉碱、污水处理药剂、废水处理药剂、过滤处理絮凝剂、污水除铬剂、重金属离子药剂
- 主营：蛋白胨、牛骨蛋白胨、福美钠、强氯精、单乙醇胺、三乙醇胺、氯化铜、水玻璃、防辐射硫酸钡
- 主营：优氯净、甘氨酸、磷酸硼、福美钠水处理、水杨酸、硫酸锰、苯甲醇、平平加、正辛烷、一乙胺、磷酸氢、白僵菌、蛋白胨、碳酸镁、磷酸铝、异丁酸、叔丁醇、硫化钡、木质素、醋酸钡、硫化钙、氯化锌、黄原胶、磺酸钙、氟化镁、异丙醇
- 主营：聚丙烯酰胺、聚合氯化铝、氢氧化钠、碱式氯化铝、复合碱、水处理药剂、工业葡萄糖、醋酸钠、聚合硫酸铁、絮凝剂、碳酸氢钠、碳酸钠、小苏打、尿素、草酸、柠檬酸
- 主营：去除重金属用螯合树脂、香精香料、有机中间体、化工助剂
- 主营：检测包、重金属、除磷剂、复合碱、处理药剂、达标处理剂、捕捉剂、除氟剂、破络剂、破氰剂、测试包、脱色剂、消泡剂、去除剂、除镍剂、蓝沣水质、废水除镍、cod降解剂、废水复合剂、氨氮降解剂、聚合氯化铝、聚丙烯酰胺、防腐剂除磷、机物降解剂、废水除硫剂
- 主营：复合碱、螯合碱、石灰块、氧化钙、氢氧化钙
- 主营：填充剂、灰钙粉、消石灰、螯合碱、复合碱、污水处理剂、生石灰、熟石灰、氧化钙、碳酸钙、氢氧化钙、纳米氧化钙、食品级氢氧化钙、纳米活性钙、除湿防潮石灰块、超细氧化钙、超细氢氧化钙
- 主营：十八醇、凡士林、三钠盐、复合碱、阻燃剂、絮凝剂、润肤剂、月桂酸、葡萄糖、乳化剂、丙三醇、洗洁精、硬脂酸、消泡剂、白砂糖、润滑油、乙二醇、吸湿剂、润滑剂、白矿油、增稠剂、丙二醇、己二酸、增塑剂、稀释剂
- 主营：甘氨酸、阻燃剂、胶黏剂、蒽甲酸、退除剂、中性红、3282-24-4、肉桂醛、退镍液、乙氧基、2768-02-7、阻燃毯、7377-08-4、4865-84-3、草酸铜、抛光盐、5471-63-6、戊二酸、插入管、丙二胺、碳化硼、蓝钨粉、硫酸镝、2799-16-8、二氨基