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Specifications
| Appearance | White powder |
| Purity (T) | 99% min |
| Water content | 0.5% max |
| Solubility (1.0M aqueous) | Colorless, transparent |
| Heavy metal (Pb) | 5 ppm |
| pH value (1% aqueous solution) | 2.0-3.0 |
| Ultraviolet absorbance (15% in 1M NaOH) 260nm | 0.05 max |
| Ultraviolet absorbance (15% in 1M NaOH) 280nm | 0.03 max |
Applications
1. Chelating Agent
HEIDA is widely used as a chelating ligand for binding metal ions in industrial, agricultural, and biochemical applications.
It forms stable complexes with transition metals, helping to:
Improve the solubility of metal ions
Control metal ion activity in solutions
Prevent metal-catalyzed degradation reactions
2. Water Treatment
Used in water softening and scale inhibition by sequestering calcium, magnesium, and heavy metal ions.
Helps in detoxification of metal-contaminated water.
3. Pharmaceutical and Cosmetic Formulations
Acts as a stabilizer to control metal ion concentration, preventing oxidation and degradation in formulations.
4. Analytical Chemistry
Serves as a complexometric reagent in titrations and metal ion analysis.
5. Agriculture
Used in micronutrient fertilizers to deliver trace metals in a bioavailable, stable form.
Benefits
✅ Strong Metal Chelation
Forms stable complexes with a broad range of metal ions, improving efficacy in applications requiring metal ion control.
✅ Water Soluble and Biocompatible
Its high solubility and low toxicity make it suitable for use in biological and environmental systems.
✅ Versatile
Functions effectively across a wide pH range and in various formulations, from industrial to pharmaceutical.
✅ Prevents Metal-Induced Degradation
Protects sensitive compounds in formulations by binding catalytic metal impurities.
Conclusion
N-(2-Hydroxyethyl)iminodiacetic acid (CAS 93-62-9) is an important chelating agent extensively used in water treatment, agriculture, pharmaceuticals, and analytical chemistry. Its strong metal-binding ability, water solubility, and versatility make it invaluable for controlling metal ion activity, enhancing product stability, and improving environmental safety.
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