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Technical specifications
Chemical and Physical Specifications (Agricultural Grade)
| Serial Number | Indicator name | Specification Requirements |
|---|---|---|
| 1 | Molecular Formula | C₁₀H₁₂N₂O₈CoNa₂·2H₂O |
| 2 | Molecular weight | 429 |
| 3 | CAS No. | 15137-09-4 |
| 4 | Cobalt Chelate (Co) | ≥ 12.5% |
| 5 | pH (1% aqueous solution) | 6.0 — 7.5 |
| 6 | Appearance | Reddish-violet powder |
Product Basic Information
| Project | Description |
|---|---|
| Product Name | Ethylenediaminetetraacetic acid cobalt-sodium salt / EDTA-CoNa₂ |
| English name | Ethylenediaminetetraacetic Acid Cobalt Disodium |
| CAS No. | 15137-09-4 |
| Molecular Formula | C₁₀H₁₂N₂O₈CoNa₂·2H₂O |
| Molecular weight | 429 |
| Appearance | Reddish-violet powder |
| Water Solubility | Fully water-soluble, dissolves rapidly. |
Product description
Product overview
Ethylenediaminetetraacetic acid cobalt sodium (EDTA-CoNa₂, also known as disodium cobalt EDTA, cobalt EDTA sodium salt) is a high-efficiency EDTA chelated cobalt fertilizer. The product is a red-violet powder with chelated cobalt content ≥12.5%, pH (1% aqueous solution) 6.0-7.5.
Key Advantages
- High cobalt contentChelated cobalt ≥12.5%, meets plant micronutrient cobalt requirements.
- High StabilityEDTA cobalt chelate is stable in soil and solution
- Fully water-solubleDark red powder, fully water-soluble, dissolves quickly, suitable for various irrigation systems.
- High degree of absorptionCobalt is in chelated form, ensuring direct uptake by plants
- High SafetypH 6.0-7.5, safe for crops.
Application Recommendations
Recommended dosage
| Application method | Recommended dosage | Important Notes |
|---|---|---|
| Foliar Feeding | 0.5–1.5 kg/ha | Dilute 800-1500 times, spray evenly on both sides of leaves |
| Drip irrigation/fertigation | 1-3 kg/ha | Apply with irrigation water, avoid mixing with highly alkaline fertilizers. |
| Complex application of water-soluble fertilizers | 1-5% | When used together with other micronutrients, a preliminary solubility test is required |
Application recommendations
- Recommended to apply on cloudy days or in the evening, avoiding periods of strong light and high temperature.
- Can be mixed with most pesticides and foliar fertilizers; a small preliminary test is recommended before mixing.
- When dissolving, first add the product to clean water, stir until fully dissolved, then add other fertilizers.
- Application frequency is adjusted according to the degree of cobalt deficiency in the crop and growth stage, typically applied every 15-20 days.
Area of application
Nutrient elements for agriculture.
Used as a highly effective cobalt source in agriculture to meet crop micronutrient cobalt requirements.
- Nitrogen fixation by legumes
- Cobalt for vegetable crops
- Nutritional additives for industrial crops
Water-Soluble Fertilizers
Used as a source of micronutrients in the production of water-soluble fertilizers.
- Water-soluble micro-element fertilizer
- Functional Water-Soluble Fertilizer
- Foliar Fertilizers
Drip irrigation with fertilization
Fully water-soluble formula, suitable for drip irrigation systems in protected cultivation.
- Drip Irrigation System
- Micro-Irrigation System
- Fertigation
Foliar Feeding
Rapidly replenishes cobalt, eliminates its deficiency symptoms.
- Foliar Fertilizers
- Rapid Correction
- Foliar Feeding
Frequently asked questions
EDTA-CoNa₂ is a chelated cobalt EDTA fertilizer, the main difference from conventional cobalt fertilizers:
- StabilityEDTA cobalt chelate is stable in soil and solution, not prone to precipitation
- Absorption CoefficientChelated cobalt can be directly absorbed by plants, with a utilization rate significantly higher than conventional inorganic cobalt fertilizers.
- Water SolubilityFully water-soluble, no sediment, suitable for various irrigation systems.
Store in a dry, well-ventilated warehouse, protect from direct sunlight, handle with care, avoid damage to packaging.
Standard packaging is 25 kg bags. We also support custom packaging according to customer requirements; please inquire about the minimum order quantity (MOQ) for a commercial offer.
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