Study on the Corrosion Inhibition Performance of EDTMPS: Chelating Capacity and Application in Pulp Bleaching
EDTMPS (sodium ethylenediaminetetra(methylenephosphonic acid)) is a highly effective organic phosphonic acid salt with strong chelating and dispersing properties. It is widely used in water treatment, textiles, papermaking, and other industries, demonstrating exceptional performance in preventing metal corrosion and removing heavy metal ions. The following section examines EDTMPS's chelating capacity toward various metal ions and its efficacy as a chelating agent in pulp bleaching processes. 1. Overview of EDTMPS Chemical Name: Sodium Ethylenediaminetetra(methylenephosphonic) Acid Molecular Formula: C₆H₁₂N₂O₁₂P₄Na₈ Molecular Weight: Approximately 735.99 Structural Formula: Contains multiple phosphonic acid groups capable of forming stable complexes with various metal ions. Properties: Highly soluble in water; insoluble in most organic solvents. Stable across a wide pH range. Excellent thermal stability and resistance to chlorine oxidatio...