Ferric Sodium Edetate: Chemical Formula and Synthesis Methods
application 2026-05-01
Ferric Sodium Edetate: Formulas and Fabrication Methods
Introduction
Ferric sodium edetate is a chelated iron complex widely used in agriculture, medicine, and industrial applications. Its stable structure ensures efficient iron delivery, making it valuable for treating iron deficiency in plants and humans. This article explores its chemical formula and fabrication methods.
Chemical Formula of Ferric Sodium Edetate
The molecular formula of ferric sodium edetate is C₁₀H₁₂FeN₂NaO₈, representing a coordination complex where iron (Fe³⁺) is bound to ethylenediaminetetraacetic acid (EDTA) and sodium ions. This chelation enhances solubility and bioavailability.
Fabrication Methods
1. Direct Chelation Process
– Step 1: Dissolve EDTA in water and adjust pH to 4-6 using sodium hydroxide (NaOH).
– Step 2: Add ferric chloride (FeCl₃) solution slowly under stirring.
– Step 3: Maintain temperature at 50-60°C for 1-2 hours to ensure complete chelation.
– Step 4: Filter and crystallize the product, then dry it to obtain ferric sodium edetate powder.
2. Ion Exchange Method
– Step 1: Prepare sodium EDTA solution and pass it through an ion-exchange column loaded with Fe³⁺ ions.
– Step 2: Collect the eluted solution containing ferric sodium edetate.
– Step 3: Concentrate and crystallize the solution for purification.
3. Industrial-Scale Production
– Uses continuous reactors for large-scale synthesis.
– Automated pH control ensures consistent quality.
– Spray drying is employed for rapid powder formation.
Applications
– Agriculture: As a foliar fertilizer to correct iron chlorosis in crops.
– Medicine: Treats iron-deficiency anemia in humans.
– Industrial: Used in water treatment and as a stabilizer in chemical processes.
Conclusion
Ferric sodium edetate is a versatile compound with well-defined formulas and efficient fabrication techniques. Its chelated structure ensures high stability, making it essential in multiple industries. Understanding its production methods helps optimize quality and application effectiveness.
