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Technical specifications
Chemical and physical properties
| Test Parameters | Standard |
|---|---|
| Iron Content | ≥ 11% |
| pH (1% aqueous solution) | 2.0 — 4.0 |
| Water-insoluble substances | ≤ 0.05% |
| Appearance | Yellow Powder |
Physical Properties
| Item | Description |
|---|---|
| Appearance | Yellow Powder |
| Chemical Formula | C₁₄H₁₉N₃O₁₀FeNa |
| Molecular weight | 468.2 |
| CAS No. | 12389-75-2 |
Product description
Product overview
Diethylenetriaminepentaacetic acid iron sodium salt (DTPA-FeNa) is a high-efficiency organic chelated iron fertilizer. The product is a yellow powder with iron content ≥11%, CAS number 12389-75-2, formula C₁₄H₁₉N₃O₁₀FeNa, molecular weight 468.2. DTPA forms stable chelate complexes with iron ions, effectively improving iron uptake by plants, and is a high-quality raw material for organic chelated iron fertilizers.
Key Advantages
- High iron contentIron content ≥11%, effectively replenishes iron deficiency in plants
- High StabilityDTPA chelated iron is stable under oxidizing conditions and less prone to soil fixation.
- Wide pH RangeSuitable for a wide pH range of 2.0-11, remains effective even in alkaline soils.
- Easily absorbedChelated iron can be directly absorbed by plant roots and leaves
- Good SolubilityWater-insoluble substances ≤0.05%, easily soluble in water.
Application recommendations
Recommended application method
Foliar Feeding
- Recommended concentration: dilution 800-1500 times.
- Directions for Use: uniform foliar spray when iron deficiency symptoms appear in crops.
- Effect: Rapid iron replenishment, results in 3-5 days
Drip irrigation/fertigation
- Recommended dosage: 1-3 kg/mu
- Directions for Use: Drip irrigation or fertigation together with water-soluble fertilizer
- Effect: Continuous iron replenishment, prevention of chlorosis due to iron deficiency.
Additive for water-soluble fertilizers
- Recommended dosage: 0.5-2% (of total fertilizer amount)
- Directions for Use: added as a raw material for water-soluble and foliar fertilizers containing iron.
- Effect: Enhances fertilizer efficacy, improves crop quality
Precautions:DTPA-FeNa is a solid powder, easily soluble in water. For foliar application, avoid use during periods of strong light and high temperature; it is recommended to apply in the morning or evening. Specific application method and dosage can be adjusted according to crop type and soil conditions.
Area of application
Nutrient elements for agriculture.
Used for prevention and treatment of plant chlorosis caused by iron deficiency, effectively replenishes iron, enhances plant photosynthesis efficiency.
Fertilizer production
Used as raw material for chelated iron to produce various water-soluble iron fertilizers, foliar sprays, fertigation fertilizers, is an important component of additives for water-soluble fertilizers.
Frequently asked questions
Main differences between DTPA-FeNa and EDTA-FeNa:
- Chelating capacityDTPA has 5 coordination atoms, EDTA has 4, DTPA-FeNa is more stable
- Applicable pH rangeDTPA is effective in pH range 2-11; EDTA chelating capacity decreases at low pH.
- Oxidative stabilityDTPA is more stable under oxidative conditions, suitable for alkaline soils and bleaching processes.
- Iron ContentDTPA-FeNa iron content ≥11%, EDTA-FeNa iron content ≥13%.
Main differences between DTPA-FeNa (chelated iron) and ferrous sulfate (inorganic iron):
- Absorption CoefficientAbsorption rate of chelated iron is significantly higher than inorganic iron, especially in alkaline soils
- StabilityChelated iron is less prone to fixation in soil and remains effective across a wide pH range.
- CompatibilityChelated iron can be mixed with most water-soluble fertilizers without precipitation.
- SafetyChelated iron is safer for crops and less likely to cause leaf burn and other fertilizer damage
Storage conditions:
- Store in a dry, well-ventilated warehouse
- Protect from Direct Sunlight
- Stack carefully, handle with care, avoid damaging packaging
- Store in sealed container, in a dry place
Shelf Life 24 months (in original tightly sealed packaging)
Packaging specification:
- Standard packaging25 kg/bag
- Individual packagingPackaging of other specifications can be provided upon customer request
Contact our sales team to learn the minimum order quantity.
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