On the Application of EDTA and Citric Acid
EDTA has the power to chelate and can combine with various metal ions to form a stable complex. Citric acid is not idle, its mild nature, and it has extraordinary uses in many fields. The two complement each other, are widely used, and have significant effects.

In the industrial field, EDTA and citric acid often work together. EDTA can remove scale on metal surfaces with its excellent chelating properties. In the electroplating process, it can stabilize the metal ions in the plating solution, ensure the uniformity and density of the coating, and improve the quality of the coating. Citric acid, with its acidity, assists EDTA to adjust the pH of the solution, optimize the reaction environment, and help metal surface treatment to be more efficient. For example, in the manufacture of electronic components, the two work together to ensure that the surface of the component is clean and its conductivity and stability are improved.

In the food industry, the two also play a big role. EDTA can bind to trace metal ions in food to block its catalytic oxidation reaction, delay food deterioration, and prolong the shelf life of food. Citric acid acts as a sour agent to give food a pleasant flavor, and can jointly inhibit microbial growth with EDTA. For example, in fruit juice drinks, EDTA prevents juice from browning, and citric acid adds a refreshing taste. The combination of the two guarantees the quality and flavor of the drink.

In the pharmaceutical field, EDTA can be used to prepare certain drugs to help drugs dissolve and absorb better. Citric acid is often used to adjust the pH value of pharmaceutical preparations and improve drug stability. In some oral liquid preparations, the combination of the two makes the drug easier to be ingested by the human body, and maintains the quality and stability of the preparation to ensure the effectiveness of the drug.

The application of EDTA and citric acid in different fields has brought many conveniences to people's production and life, and its role cannot be underestimated. It is an important factor in helping the development of the industry.