Trisodium EDTA

Product Overview

Trisodium EDTA is a high-purity chelating agent designed to form stable, water-soluble complexes with a broad range of metal ions. In technical grade form, it provides precise control over metal concentrations in analytical, industrial, and process environments. The material is supplied as a white crystalline powder that is odorless and highly soluble in water, enabling consistent dispersion and rapid complex formation in solution. Its molecular weight is specified at 403.24 g/mol, and the product is formulated to deliver predictable performance across batch-to-batch production with low moisture content (typical water content ~0.5 wt%). This product is suitable for analytical chemistry, water treatment, cosmetic formulations, and controlled food processing where metal sequestration is required to prevent catalyzed oxidation or interference in analyses.

In analytical applications, Trisodium EDTA serves as a robust reagent for complexometric titrations and metal ion quantification, aligning with USP/ACS-style assay methodologies and rigorous quality controls. Industry users rely on its stability under recommended storage conditions, its low heavy metal carryover, and its compatibility with standard containers (HDPE and glass). By sequestering metal ions, it mitigates precipitation, enhances formulation stability, and improves the reliability of downstream processes, particularly where trace metal control is critical. The product meets Technical Grade specifications and is manufactured to support industrial and institutional use with traceable quality documentation.

Key Properties

• Appearance: White crystalline powder
• Odor: Odorless
• Solubility: Soluble in water
• CAS: 13235-36-4
• Chemical Formula: C₁₀H₁₂N₂Na₃O₈
• Molecular Weight: 403.24 g/mol
• Specific Gravity (20°C): 1.5 (typical)
• Water Content (Karl Fischer): 0.5 wt% (typical; 0.1–1.5% range)
• Residue After Ignition (550°C): Typical 0.05%; Max 0.2%
• Chloride (Cl⁻): Typical 20 ppm; Max 50 ppm
• Nitrate/Nitrite (NO₃⁻): Typical 5 ppm; Max 20 ppm
• Ammonium (NH₄⁺): Typical 1 ppm; Max 5 ppm
• Sulfate (SO₄²⁻): Typical 50 ppm; Max 200 ppm
• Phosphate (PO₄³⁻): Typical 10 ppm; Max 50 ppm
• Arsenic (As): Typical 0.1 ppm; Max 0.5 ppm
• Heavy Metals (as Pb): Typical 0.5 ppm; Max 2 ppm
• Iron (Fe): Typical 0.2 ppm; Max 1 ppm
• Copper (Cu): Typical 0.5 ppm; Max 2 ppm
• Manganese (Mn): Typical 0.2 ppm; Max 2 ppm
• Nickel (Ni): Typical 0.2 ppm; Max 1 ppm
• Lead (Pb): Typical 0.1 ppm; Max 0.5 ppm
• Zinc (Zn): Typical 0.5 ppm; Max 2 ppm
• Aluminum (Al): Typical 0.5 ppm; Max 2 ppm
• Chromium (Cr): Typical 0.1 ppm; Max 0.5 ppm
• Cobalt (Co): Typical 0.1 ppm; Max 0.5 ppm
• Calcium (Ca): Typical 100 ppm; Max 200 ppm
• Magnesium (Mg): Typical 100 ppm; Max 200 ppm
• Potassium (K): Typical 100 ppm; Max 200 ppm
• Sodium (Na): Typical 500 ppm; Max 1000 ppm
• Solids Content: Passes standard assay with high purity

Common Applications

• Metal Ion Sequestration: Industrial processes use Trisodium EDTA to bind trace metal ions, preventing unwanted precipitation and stabilizing formulations in metal-rich environments.
• Analytical Chemistry Reagent: Utilized as a chelating agent in complexometric titrations and metal concentration analyses, aligned with USP/ACS methods for precise quantification.
• Water Treatment: Employed to remove heavy metals and regulate hardness through chelation, improving downstream water quality and process efficiency.
• Cosmetic Formulations: Included to stabilize cosmetic emulsions and formulations by chelating trace metals that could catalyze oxidation or destabilize products.
• Food Preservation: Used as a sequestrant to reduce metal-catalyzed oxidation in processed foods, helping to maintain quality and extend shelf life.
• Industrial Process Control: Applied in metal finishing and electroplating processes to manage metal ion levels and improve bath stability.

Safety Precautions

Handling should be performed with appropriate PPE, including gloves and eye protection, in a well-ventilated area. Store in a cool, dry place away from direct sunlight and tightly seal containers to prevent moisture ingress. The material is compatible with HDPE and glass containers and should be kept away from strong oxidizing agents to maintain integrity.

Exposure to this product may cause eye and skin irritation. The SDS indicates WARNINGS for eye irritaion and skin irritation, with recommended first aid including immediate rinsing with water for at least several minutes and seeking medical attention if irritation persists. In case of inhalation or ingestion, move to fresh air and seek medical assistance as needed. Follow all regulatory guidelines and refer to the SDS for detailed emergency procedures and transport information (UN 1760, Corrosive liquid, n.o.s., Class 8, Packing Group III).

Benefits

✔ High-purity technical grade – Meets industrial specifications with low heavy metal carryover to support regulatory compliance in food, pharmaceutical, and cosmetic contexts.
✔ Excellent metal ion sequestration – Reliable complexation across a range of metal ions to prevent precipitation and oxidation in formulations and processes.
✔ Stable, water-soluble powder – White crystalline material with consistent dispersion and minimal clumping when stored under recommended humidity conditions.