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Specifications
| Appearance: | White crystal powder |
| Iminodiacetic Acid assay: | 99% min |
| Loss on drying: | 0.3% max |
| Cl: | 300 ppm max |
| Na: | 300 ppm max |
| Insoluble in Alkali: | 0.2% max |
Applications
1. Chelating Agent
Commonly used to bind metal ions such as Fe³⁺, Cu²⁺, Zn²⁺, and Ni²⁺.
Forms part of chelating resins for water softening and metal ion removal in wastewater treatment.
2. Precursor for Chelating Resins
IDA is a core component in the production of IDA-functionalized resins, such as those used in immobilized metal affinity chromatography (IMAC) - critical in protein purification, especially for His-tagged proteins.
3. Pharmaceutical Intermediate
Used in the synthesis of radiopharmaceuticals for diagnostic imaging, including hepatobiliary imaging agents like IDA derivatives labeled with technetium-99m (99mTc).
4. Micronutrient Fertilizers
Serves as a chelating agent in agriculture to provide bioavailable forms of trace metals (e.g., Fe, Zn, Mn), especially in alkaline soils.
5. Industrial Cleaning Agents
Included in formulations for descaling, boiler cleaning, and detergents where metal ion removal is needed.
6. Electroplating and Metal Processing
Controls metal ion concentrations in plating baths, improving deposition quality and reducing metal waste.
Benefits
| Benefit | Description |
|---|---|
| Effective Metal Chelation | Binds strongly with many divalent and trivalent metal ions. |
| Versatile Ligand | Can form part of many organometallic and coordination complexes. |
| Stable Under Various pH | Works across a range of pH environments. |
| Biocompatibility | Used in medical imaging and diagnostics. |
| Low Toxicity | Safer than many alternative chelators. |
Conclusion
Iminodiacetic acid is a highly useful chelating agent with roles in biotechnology, chemical synthesis, environmental applications, and medicine. It is particularly valuable in metal ion coordination, protein purification technologies, and the formulation of fertilizers and cleaners. Its stability, low toxicity, and versatility make it a preferred molecule in both laboratory and industrial settings.
