Chelated iron micronutrient for high-pH soils
EDDHA-Fe — Iron EDDHA Chelate
RunziChem EDDHA-Fe 6% is a fully water-soluble iron chelate specified at Fe 5.8-6.5% with an ortho-ortho isomer content of 4.8% and heavy metals (as Pb) ≤30 ppm, pH 7-9. It is the reference correction for lime-induced iron chlorosis in high-pH and calcareous soils; typical values are confirmed per batch COA.
SPECIFICATION
Typical specification
| Chemical name | EDDHA iron sodium (iron sodium ethylenediamine-di(o-hydroxyphenylacetate)) |
|---|---|
| Formula | C18H16N2O6FeNa |
| Molecular weight | 435.2 |
| Appearance | Reddish-brown to near-black granular powder or dark-red crystals |
| Content / Assay | Fe 5.8-6.5%; ortho-ortho isomer 4.8%; heavy metals (as Pb) <=30 ppm |
| pH (1% solution) | 7-9 |
| Solubility | Fully soluble in water |
| Indicative price | US$3,000–6,500 per metric ton, FOB Qingdao. Final quotation depends on grade, volume, and packaging — confirm per inquiry. |
Values shown are typical; exact figures are confirmed per batch on the Certificate of Analysis (COA).
APPLICATIONS
Uses & crop applications
EDDHA-Fe 6% corrects iron chlorosis (lime-induced leaf yellowing) in soils where other iron sources fail, and can be applied through several delivery methods.
- Foliar spray to green up chlorotic new growth
- Drip irrigation and fertigation (water-soluble feeding)
- Soil drench and root-zone application in high-pH, calcareous soils
- Suited to fruit trees, citrus, grapevines, vegetables and ornamentals prone to iron deficiency
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