General Properties and Industrial Significance:
EDTA-CoK₂ is a cobalt chelate, where cobalt (Co²⁺) is bound to EDTA (ethylenediaminetetraacetic acid) and stabilized with two potassium (K⁺) ions. It is a water-soluble, stable form of cobalt used primarily in agriculture and microbiology.
Applications:
Agriculture and Animal Nutrition:
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Cobalt is essential for:
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Vitamin B₁₂ synthesis in ruminants (e.g., cows, sheep).
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Supporting nitrogen fixation in leguminous crops, by aiding Rhizobium bacteria in root nodules.
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EDTA-CoK₂ ensures cobalt remains soluble and bioavailable in soil or feed formulations.
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Used in:
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Animal feed supplements
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Soil applications to enhance microbial nitrogen fixation
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Foliar sprays (less common)
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Key Benefits:
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Chelated form prevents precipitation or immobilization of cobalt in soils, especially alkaline or calcareous soils.
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Highly soluble and bioavailable.
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Potassium counter-ions (K⁺) may offer a small added potassium benefit in plant applications.