EDTMP(S) Scale Inhibitor
The scale inhibitor eMAI™ EDTMP is a widely used water quality stabilizer and an important chelating agent. In aqueous solution it dissociates into eight pairs of positive and negative ions, forming bis-five-membered-ring metal chelates with Ca²⁺, Mg²⁺, Fe²⁺, Fe³⁺ and other metal ions that remain loosely dispersed in water without precipitating; meanwhile, crystals can adsorb the negatively charged inhibitor molecules and incorporate them into scale crystals, distorting the lattice and thereby inhibiting carbonate and sulfate scales. Its salts are generally liquids. Applications: Circulating cooling water systems: As a cathodic corrosion inhibitor and scale inhibitor, it effectively chelates calcium and magnesium ions and significantly inhibits calcium sulfate and barium sulfate scales. Boiler water treatment: Prevents scaling and corrosion of boilers and pipelines; suitable for internal water treatment of low-pressure boilers. Oilfield water injection: Remains stable and resists hydrolysis in high-hardness, high-alkalinity water, preventing scaling of injection pipelines and protecting equipment. Electroplating and surface treatment: Replaces highly toxic cyanides in alkaline copper and zinc plating, stabilizing metal ions in the bath and improving coating brightness and adhesion. Metal cleaning and polishing: High-purity electronic-grade EDTMP is used for cleaning semiconductor wafers and copper foil, removing trace metal impurities and improving surface finish. Textile dyeing and printing: Serves as an oxygen-bleach stabilizer and water softener, chelating catalytic ions such as iron and copper to prevent premature hydrogen peroxide decomposition and stabilize the bleaching process, while preventing metal ions from reacting with dyes to improve dye uptake and color vibrancy.
Overview and Applications
The series covers organophosphonic acids and salts that complex calcium, magnesium, iron, and other metal ions while suppressing scale-crystal growth. They serve circulating cooling water, boiler water, and oilfield injection systems and can be blended with polycarboxylates for added performance.
Related Products
- ATMP Scale Inhibitor
- BHMTPMPA Scale Inhibitor
- DTPMPA Scale Inhibitor
- HEDP Scale Inhibitor
- HPA Scale Inhibitor
- PBTCA50 Scale Inhibitor