Calcium EDTA (C₁₀H₁₂CaN₂Na₂O₈·2H₂O)
Calcium EDTA is a highly stable and fully water-soluble chelated calcium source designed for use in the formulation of plant nutrition products. It contains between 9.5% and 10.5% elemental calcium (Ca), providing plants with an efficient and bioavailable form of this essential nutrient. The product appears as a white powder and is suitable for both foliar and soil applications.
Chemically known as ethylenediaminetetraacetic acid calcium disodium salt hydrate, Calcium EDTA is especially effective in preventing and correcting calcium deficiencies, which are commonly associated with disorders such as blossom-end rot, tip burn, and poor fruit development. It performs optimally in the pH range of 6.5 to 7.5 (1% solution) and is compatible with most fertilizers.
Chemical and Physical Properties
| Property | Value |
|---|---|
| Appearance | White powder |
| CAS No | 23411-34-9 |
| Molecular Formula | C₁₀H₁₂CaN₂Na₂O₈·2H₂O |
| Chemical Name | Ethylenediaminetetraacetic acid calcium disodium salt hydrate |
| Calcium Content | 9.5% – 10.5% |
| pH (1% solution) | 6.5 – 7.5 |
Application Areas
🌿 Use in Plant Nutrition Formulations
Calcium EDTA is used to prevent and treat calcium deficiencies in crops by delivering calcium in a chelated and highly absorbable form. It supports cell wall strength, proper root and shoot development, and overall plant health. It is ideal for use in NPK fertilizers, micronutrient blends, and customized nutrient solutions.
- Corrects calcium-related physiological disorders such as blossom-end rot and leaf tip burn.
- Compatible with most liquid and solid fertilizer formulations.
- Suitable for fertigation, foliar sprays, and hydroponic systems.
- Ensures consistent and efficient calcium availability to crops.
Calcium EDTA by Obafer Chemicals
Obafer Chemicals supplies high-purity Calcium EDTA for agricultural use. Our chelated micronutrient products are designed to maximize nutrient uptake and improve crop yield. For bulk orders and technical support, get in touch with our team.

