Chelating dispersant is a chemical substance that can achieve dispersion by forming stable complexes with metal ions. Chelating dispersants typically consist of the following main components:
Chelating agent (chelating ligand): Chelating agent is a key component of chelating dispersant and has the ability to form stable complexes with metal ions. Common chelating agents include organic acids such as ethylenediaminetetraacetic acid (EDTA), sulfite, citric acid, etc. Chelating agents typically contain multiple coordination sites and can form coordination bonds with metal ions.
Dispersant/Surfactant: In order to evenly disperse chelating agents and metal ions in solution and prevent their re aggregation, it is often necessary to add non ionic or cationic dispersants/surfactants. They can reduce interfacial tension and promote particle dispersion in the solution.
Buffer: In order to maintain the stability and appropriate pH value of chelating dispersant solutions, it is often necessary to add a buffer. Buffers can prevent pH changes in the solution caused by acid-base reactions and maintain the stability of chelating agents and metal ions.
Auxiliary/reducing agents: Chelating dispersants may add other auxiliary or reducing agents to regulate the properties of the solution and improve the chelating effect. For example, complexing thickeners can be added to increase the viscosity of the solution, or certain inhibitors can be added to prevent chelating reactions between chelating agents and non target metal ions.
It should be noted that different chelating dispersants have different composition combinations, and the appropriate chelating dispersant should be selected based on the desired application and the metal ions that need to be dispersed. In addition, relevant usage instructions and safety operating regulations should be followed during use.