Chelating agents are a type of chemical substance that has the ability to undergo complex reactions with metal ions. They alter the chemical properties and behavior of metal ions by forming stable complexes around them. Chelating agents are usually composed of organic compounds, some of which are common main components:
Ethylenediaminetetraacetic acid (EDTA): EDTA is a widely used multi toothed chelating agent with excellent chelating properties. It can form stable complexes with monovalent or multivalent metal ions and is widely used in many industrial and scientific fields.
Citric acid: Citric acid is a naturally occurring chelating agent widely used in fields such as food, pharmaceuticals, and cleaning agents. It has good solubility and complexing properties, and can form complexes with various metal ions.
Gluconic acid: Gluconic acid is an organic acid containing hydroxyl and carboxyl groups, which can be used as a chelating agent. It can undergo complex reactions with some metal ions and provide certain corrosion inhibition and stability.
Gelatin: Gelatin is an animal derived chelating agent mainly composed of collagen. It can form complexes with some metal ions and is widely used in fields such as food, photography, and pharmaceutical preparations.
These components are only a part of the chelating agent and do not represent the whole. In fact, there are many other organic compounds that also possess chelating properties, and suitable chelating agents can be selected according to different needs and applications. When using chelating agents, it is important to follow the manufacturer’s recommendations and instructions to ensure proper use and avoid potential risks.