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Tetrasodium EDTA dihydrate is an inorganic salt composed of four sodium ions and the EDTA (ethylenediaminetetraacetate) ion, commonly used as a chelating agent in industrial, pharmaceutical, and cosmetic applications.

🏭⚗️ Production
It is produced industrially by neutralizing ethylenediaminetetraacetic acid (EDTA) with sodium hydroxide, followed by crystallization to obtain the dihydrate form. In laboratory or pharmaceutical settings, small-scale synthesis involves carefully controlled neutralization and purification processes.

🔬 Properties
Tetrasodium EDTA dihydrate appears as a white crystalline powder, highly soluble in water, with chemical formula Na₄EDTA·2H₂O and a molar mass of approximately 372.24 g/mol. It is stable under normal conditions and acts as a strong chelator, binding metal ions effectively.

🧪 Applications
This compound is widely used to sequester metal ions in detergents, cosmetics, pharmaceuticals, and food products. It also finds use in water treatment and as a stabilizer in various formulations.

⚠️ Safety
Tetrasodium EDTA dihydrate is generally considered safe but may cause mild irritation to skin or eyes upon contact. It should be handled with standard protective equipment and stored in a cool, dry place away from acids and oxidizing agents.