On the physical properties of a certain agent and the use of
an existing agent, named "Edta-2na-2h2o". Its shape is usually crystalline, its color is clean and shiny, its properties are relatively stable, and it is soluble in water.

This related concept involves the principle of coordination first. Its molecular structure is unique, with multi-dentate ligands, which can coordinate with many metal ions. For example, with calcium and magnesium ions, it can form a stable complex. This coordination ability is quite important in water quality treatment. If calcium and magnesium ions in water cause hard water, "Edta-2na-2h2o" can coordinate with calcium and magnesium ions to soften the water and solve the problem of hard water.

In analytical chemistry, "Edta-2na-2h2o" is also an important reagent. Because of its quantitative coordination with metal ions, it is often used as a titrant. With specific indicators, the content of metal ions in the solution can be measured. Accurate titration helps to analyze the composition and content of substances, which is indispensable for scientific research and production.

In industrial fields, such as electroplating process. The state of metal ions in the plating solution affects the quality of the coating. "Edta-2na-2h2o" can regulate the concentration and activity of metal ions, making the coating uniform and dense, and improving the quality of electroplating products.

To sum up, "Edta-2na-2h2o" is a useful agent in the world due to its coordination characteristics in water quality, analysis, industry and other fields.