Main Characteristics :     Rexolin® D 12 is a stable, water-soluble iron chelate;  Iron chelated by   DTPA.

Item Characteristic

  • Solubility in water: 110 g/l (20 ºC)
  • EC (1 g/l): 0.35 mS/cm
  • Poor in Chloride

Application : For foliar, side and top dressing, and for Hydroponics
Appearance : Yellow Green Crystals
pH (1% solution) : 2. 5 - 3.5
pH Stability range: : 1.5 –7.5
Bulk density untapped :  approx. 650 - 750 kg/m3
Solubility in water  : approx. 110 g/l (20 °C), 160 g/l (50 °C) (at pH as such)

Product analysis

Nutrient Chelating Agent Typical* % Minimum %

Iron (Fe) DTPA

11.6 11.3

Rexolin® D 12 is a product developed for usage on iron deficient soils with acid to neutral pH and for iron deficient crops through foliar application. Foliar application is recommended when the soil is neutral to alkaline or when soil application is impossible for other reasons. It has an excellent performance in hydroponics systems. 

Rexolin® D 12 contains 116 grams iron per kg of product as Fe-sodium-DTPA derived from diethylenetriaminepentaacetic acid.

Never bring Rexolin® D 12 in direct contact with concentrated acids. Rexolin® D 12 is stable between pH 1.5 - 7.5. Use chelated zinc, manganese and copper if these elements are dissolved in the same tank. Keep the solution in the dark and use it within one or two weeks. Check the Fe-level after recirculation and add extra Rexolin® D 12 if necessary.

When the pH near the roots is rising to 7.5 or higher, or when the water used contains very high levels of zinc, it is advised to substitute half of the Fe-DTPA by Fe-EDDHMA (or a high quality Fe-EDDHA).

Chemical Name :    Diethylenetriaminepentaacetic acid ferric-sodium hydrogen  complex; DTPA -FeHNa chelated