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Physical & Chemical properties

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Additional information

Hydroxyethylethylenediamine-triaceticacid, ferric-sodium complex (HEDTA-FeNa) is not classified as dangerous or hazardous.

HEDTA-FeNa consists of odourless red brown microgranules.

HEDTA-FeNa does not melt before the decomposition, which starts at 203°C.

The relative density of hydroxyethylethylenediaminetriacetic acid, ferric complex, sodium salt is 1.362.

Characteristics of the PSD


51.3 µm


118 µm


208 µm

Fraction < 100 µm

37.8 % v/v

Fraction < 10 µm

1.6 % v/v

Fraction < 5 µm

0.9 % v/v

 The vapour pressure is low.
 The estimated log Kow for HEDTA-Fe(III)Na is -8.66.
 The water solubility of HEDTA-FeNa is at least 47% w/w at 30°C. 

 The self-ignition temperature of Hydroxyethylethylenediaminetriacetic acid, ferric complex, sodium salt is 272°C.

HEDTA-FeNa is non flammable, non explosive and has no oxidising properties.

 The stability and dissociation constants log K of HEDTA-FeNa are 19.7, 3.88 and 8.83.