EDTA ZnK2

General Properties and Industrial Significance:

EDTA-ZnK₂ is a zinc chelate, where zinc (Zn²⁺) is chelated (bound) with EDTA (ethylenediaminetetraacetic acid) and neutralized with two potassium (K⁺) ions. It is a water-soluble and highly stable form of zinc, designed for efficient nutrient delivery in agricultural applications.

EDTA-ZnK₂ is functionally similar to other Zn-EDTA chelates (like ZnNa₂), with the key difference being the type of neutralizing cation (potassium instead of sodium or ammonium), which may affect compatibility in some fertilizer mixes.

Applications:

• Agriculture (Micronutrient Fertilizer):

1. Used to correct zinc deficiency in crops such as maize, rice, citrus, beans, and vegetables.

2. Zinc is essential for:

   • Auxin (growth hormone) synthesis

   • Enzyme function

   • Protein and carbohydrate metabolism

3. The EDTA chelation ensures zinc remains soluble and bioavailable, especially in neutral to slightly alkaline soils.

• Application Methods:

1. Soil application

2. Foliar spray

3. Fertigation

4. Hydroponic systems

Key Benefits:

• Typically contains 12–15% elemental zinc.

• Remains effective up to pH ~6.5–7.0.

• Prevents zinc lock-up in the soil due to reactions with phosphates or carbonates.

• Potassium ions (K⁺) may offer a minor nutritional boost for plants.