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EDTA-CuNa2 is used as a food additive.
Copper Disodium EDTA (CuNa₂EDTA) is a water-soluble chelate formed by binding copper ions to disodium EDTA. It appears as a blue-green powder and is used primarily as a stable, bioavailable source of copper. In agriculture, it corrects copper deficiency in crops through foliar sprays or soil application, remaining effective across varying pH levels due to its chelated structure. It’s also added to animal feed to ensure proper copper nutrition without toxicity. In industrial settings, it helps control trace metal activity and may serve in antimicrobial formulations leveraging copper’s biocidal properties. Though less common in cosmetics, it can act as a color stabilizer. Unlike free copper salts, it resists precipitation and degradation, enhancing efficacy and shelf life. However, environmental concerns about EDTA persistence limit its use in some regions. Overall, Copper Disodium EDTA is valued for delivering copper reliably in agrochemical, nutritional, and specialty chemical applications.
Items | Specifications | Results |
Appearance | Blue crystalline powder or granular | Blue crystalline powder or granular |
Chelate copper content % | 14.5-15.5 | 15.1 |
Content,% | ≥99.5 | 99.9 |
PH 1%p-p 25℃ | 6.0-7.0 | 6.2 |
Heavy metals(as Pb)% | ≤0.0001 | 0.00007 |
Cd,% | ≤0.0001 | |
As,% | ≤0.0001 | 0.00006 |
NTA,% | ≤0.1 | 0.05 |
Water-indissoluble matter,% | ≤0.01 | 0.007 |
Conclusion | The product conforms to the above specifications. | |
| Product parameters | |
| Cas number: | 14025-15-1 |
| Appearance: | Blue crystalline powder |
| Purity: | 99%min |
| Package details: | 25kg/bag |
| Brand: | Fortunachem |
Copper Disodium EDTA (also known as Disodium Copper EDTA or CuNa₂EDTA) is a chelated complex formed between copper ions (Cu²⁺) and the disodium salt of ethylenediaminetetraacetic acid (EDTA). It is a stable, water-soluble coordination compound widely used in chemical, agricultural, and industrial applications.
Chemical Overview:
Formula: C₁₀H₁₂CuN₂Na₂O₈
Appearance: Typically a blue-green crystalline powder or granules
Solubility: Highly soluble in water
Function: Serves as a bioavailable source of copper while preventing copper precipitation or reactivity through chelation.
Key Uses in Chemical & Industrial Applications:
Agriculture & Fertilizers
Used in micronutrient fertilizers to correct copper deficiency in soils and crops. The EDTA ligand keeps copper soluble and plant-available across a range of pH levels.
Animal Feed Additive
Provides essential copper in a stable, non-toxic form for livestock nutrition.
Water Treatment
Controls trace metal activity; though less common than other EDTA salts, it can be used to manage copper levels in industrial water systems.
Cosmetics & Personal Care
Occasionally used as a color stabilizer or trace mineral source, though more common EDTA forms (e.g., disodium or tetrasodium EDTA) are preferred for sequestration.
Analytical & Laboratory Chemistry
Employed as a standard in calibration or as a controlled copper source in enzymatic studies.
Fungicide/Bacteriostatic Agent
In some formulations, it leverages copper’s biocidal properties in a stabilized form for antimicrobial action.
Unlike free copper salts (e.g., copper sulfate), Copper Disodium EDTA resists binding to soil particles or forming insoluble hydroxides, ensuring better bioavailability and consistent performance. However, environmental concerns about EDTA persistence have led to regulated use in some regions.
In summary, Copper Disodium EDTA is primarily valued as a stable, bioavailable copper delivery agent in agriculture, feed, and specialty chemical formulations.
Used as a nutritional supplement.
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