Trisodium ethylenediamine disuccinate

Product Overview

Trisodium ethylenediamine disuccinate (EDDS trisodium salt), CAS 208469-18-7, molecular formula C₁₀H₁₃N₂Na₃O₈, molecular weight 402.3, is the trisodium salt form of EDDS. It is a highly water-soluble, fully biodegradable chelating agent widely recognized as the leading eco-friendly alternative to EDTA and DTPA in industrial and consumer applications.

Key Properties

• Fully Biodegradable: Rapidly and completely degrades in natural environments, with no persistent residues
• High Water Solubility: Superior solubility compared to the acid form, making it ideal for liquid formulations
• Strong Metal Binding: Excellent chelating capacity for Fe³⁺, Cu²⁺, Zn²⁺, Mn²⁺, Ca²⁺, and Mg²⁺
• Broad pH Range: Performs effectively across acidic to strongly alkaline conditions
• Appearance: White to pale yellow solid powder, melting point ~200 °C, density ~1.6 g/cm³

Applications

• Green Detergents: Primary replacement for EDTA in eco-friendly laundry and dishwashing detergents as a water softener and stain booster
• Industrial Water Treatment: Sequesters heavy metals in cooling water systems, boiler water treatment, and flue gas desulfurization
• Agricultural Micronutrients: Chelated trace element fertilizer for foliar spraying and soil application, enhancing crop absorption of Fe, Zn, and Mn
• Soil & Groundwater Remediation: Facilitates removal of heavy metals (Pb, Cd, Cu, Zn) from contaminated soils and groundwater through chelant-assisted extraction
• Pulp & Paper Bleaching: Controls transition metal-catalyzed peroxide decomposition, improving bleaching efficiency
• Personal Care Products: Used in shampoos, lotions, and cosmetics as a stabilizer and heavy metal sequestrant
• Textile Industry: Improves dyeing uniformity and prevents metal ion interference in textile processing

Environmental & Regulatory

• Meets OECD biodegradability standards and is approved for use in eco-labeled products
• Non-toxic to aquatic organisms, classified as a green chemistry success story
• Widely adopted in EU and North American markets as the preferred EDTA substitute