Sodium ferric EDDHA

Sodium ferric EDDHA (CAS 16455-61-1), also known as Fe-EDDHA or EDDHA Iron Chelate, is a chelated iron micronutrient used to correct and prevent iron deficiency in crops.

Where is Sodium ferric EDDHA used?

• High-value crops such as citrus, grapevines, stone fruits and ornamentals: standard corrective treatment for iron chlorosis, applied by soil drench or fertigation
• Greenhouse and hydroponic production: stable, plant-available iron throughout the growth cycle without precipitation at elevated pH
• Turf management: maintains colour and density on alkaline-soil sports fields and golf courses
• Soluble fertilizer blends: primary iron source
• It maintains iron availability in alkaline and calcareous soils where simpler iron salts fail.

Good to know: Unlike simpler iron salts, it maintains iron availability in alkaline and calcareous soils. This is especially critical where soil pH or water hardness would compromise alternative chelates.

Commercial specifications

• Iron content expressed as total and ortho-ortho chelated iron fraction
• Commercial grades defined by total Fe% and solubility specifications
• Ortho-ortho fractions from 1.6% to 6% Fe