Complexing agents and chelating agents are both types of chemicals, and their main functions are to prevent, suppress, or remove the binding and precipitation of insoluble substances with metal ions in solutions, as well as the dissolution and corrosion of metal ions in water treatment, metal material protection, petrochemicals, biomedicine, and other fields.
Overall, the main difference between chelating agents and chelating agents lies in their different binding mechanisms and ranges to metal ions.
Complex agents refer to a type of analytical reagent based on the working principle of cyclic polarography. It extracts metal atoms from the tested sample solution through coordination bond complexation reactions with specific metal elements, and then analyzes and detects them in electrochemistry. From this, it can be seen that the main function of the complexing agent is to analyze its properties and select specific complexing agents for detection and separation of different metal ions.
Chelating agents are a type of organic molecules that can form highly stable coordination compounds with metal ions through multiple functional groups. Multiple ligands within the chelating agent can surround metal ions, forming metal ligand complexes, thereby preventing the formation of solid precipitation and oxidative corrosion processes of metal ions. There is no strict definition of analytical reagents for chelating agents compared to chelating agents. Typical chelating agents include EDTA (diamine tetraacetate), DTPA (diethylenetriamine pentaacetic acid), MPA (mercaptoacetic acid), etc.
In summary, there are significant differences in nature and use between the two, and it is necessary to select suitable products and use them correctly according to the specific application needs.