**Product Name:** HEDTA; HEEDTA; N-Carboxymethyl-N'--(2-hydroxyethyl)-N,N'-ethylenediglycine; N-(2-Hydroxyethyl)ethylenediaminetriacetic Acid
**Alternative Names:** Aminoethylethanolamine triacetic acid; N-hydroxyl Ethylenediaminetriacetic acid; N-(2-hydroxyethyl)ethylenediamine-N,N,N-triacetic acid; Hydroxyethylethylenediamine Triacetic acid; N-di-hydroxyethyl-ethylenediaminetriacetic acid
**CAS Number:** 150-39-0
**Molecular Formula:** Câ‚â‚€Hâ‚₈Nâ‚‚O₇
**Molecular Weight:** 278.26 g/mol
**Grade:** Bio Reagent (BR)
**Purity:** ≥98.0%
**Water Solubility Test:** Pass
**Iron Content:** ≤0.001%
**Ash Residue:** ≤0.1%
**Description:**
This is a white crystalline powder with good solubility in hot water, ethanol, and alkaline solutions, while showing limited solubility in cold water. The melting point is approximately 212°C. It is important to note that this compound may have potential carcinogenic properties, so proper safety precautions should be taken during handling.
**Applications:**
HEDTA is primarily used in biochemical research as an aminocarboxylate chelating agent. It forms stable complexes with various metal ions, especially in alkaline conditions (pH 8–11). It is particularly effective in forming stable chelates with rare earth elements and is commonly used for calcium complexation titration. Additionally, it serves as a metal masking agent in analytical chemistry and is applied in the refining of rare earth elements.
**Industrial Uses:**
It is also utilized in the textile and pharmaceutical industries for preservation purposes. Its chelating ability makes it valuable in processes requiring metal ion control and stabilization.
**Safety Note:**
Handle with care. Avoid direct contact with skin and eyes. Use appropriate personal protective equipment (PPE) when working with this compound. Store in a cool, dry place away from incompatible materials.
**Storage Conditions:** Room temperature, protected from moisture and light.
**Packaging:** Typically available in sealed containers to maintain quality and prevent contamination.
This compound is widely recognized for its versatility and effectiveness in chelation-based applications across multiple scientific and industrial fields.
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