The "Invisible Supporting Role" in Cleaners and Plating Baths: EDTA-4Na

Ethylenediaminetetraacetic Acid Tetrasodium (EDTA-4Na) is among the most low-key yet most commonly used chelants in the family. It firmly captures various metal ions such as calcium, magnesium, iron, copper, and lead, forming stable water-soluble complexes — so it shows up everywhere in liquid detergents, dyeing auxiliaries, plating baths, paper de-inking, and food cleaning, where it softens water, stabilizes formulas, and prevents metal ions from interfering with reactions.

For water treatment and equipment cleaning, EDTA-4Na (Ethylenediaminetetraacetic Acid Tetrasodium) is often used in online cleaning and passivation to chelate and carry away metal oxides on pipe walls and equipment surfaces. Note that EDTA-class chelants affect the metal ecology of water bodies, so EDTA-containing waste liquid should be treated per local environmental requirements. Kairui lists the full chelant and surfactant series in its Product Center, making it convenient for customers to source everything in one stop by process.