Aminoethylphosphonic Acid, also known as aminotris(methylene-phosphonic acid) or phosphonoethylamine, is a chemical compound widely used in various industries. It serves as a versatile chelating and sequestering agent, exhibiting excellent metal ion binding properties. This acidic compound is often utilized in water treatment applications to control scale and corrosion by inhibiting the formation of mineral deposits. Additionally, it finds its application in the textile industry as a dye fixing agent. Some other synonyms for this compound are ethylaminomethanephosphonic acid, aminophosphonate, aminoethylphosphonate, or simply AEPA. Its ability to complex metal ions makes it an essential ingredient in various formulations, ranging from cleaning products to industrial chemicals.