中文
English
Russian
Technical specifications
Quality Indicators
| Check items | Standard |
|---|---|
| Content (as DTPA acid) | ≥ 99.0% |
| Chloride (Cl⁻) | ≤ 0.01% |
| Sulfate (SO₄²⁻) | ≤ 0.05% |
| Iron (Fe) | ≤ 0.001% |
| Chelation Value | ≥ 252 mgCaCO₃/g |
| pH value (10 g/L, 25°C) | 2.1 — 2.5 |
| Appearance | White Powder |
Physical Properties
| Project | Description |
|---|---|
| Appearance | White Powder |
| Chemical Formula | C₁₄H₂₃N₃O₁₀ |
| Molecular weight | 393.35 |
| CAS No. | 67-43-6 |
Product description
Product overview
Diethylenetriaminepentaacetic acid (DTPA) is a high-efficiency polyamino-polycarboxylate chelating agent. The product is a white powder with purity ≥99.0%, CAS number 67-43-6, molecular formula C₁₄H₂₃N₃O₁₀, molecular weight 393.35. DTPA has exceptionally strong chelating ability, forming stable complexes with various metal ions, widely used in agriculture for producing nutrient elements and fertilizers.
Key Advantages
- High purityContent ≥99.0%, extremely low impurity content (chlorides ≤0.01%, sulfates ≤0.05%, iron ≤0.001%).
- High Chelating CapacityChelating capacity ≥252 mg CaCO₃/g, strong chelating ability.
- Acidic ProductspH value 2.1-2.5 (10 g/L, 25°C), suitable for acidic systems.
- Wide ApplicationHigh-quality raw material for agricultural fertilizers and nutrient elements.
Application recommendations
Recommendations for industrial application
Agricultural nutrient elements — chelated micronutrient fertilizers.
- Recommended dosage: 0.5%—2.0% (of total fertilizer amount).
- Directions for Use: reaction with metal salts (e.g., iron sulfate, zinc sulfate) to form chelated micronutrient fertilizers.
- Effect: Enhances the uptake and utilization of micronutrients (iron, manganese, zinc, copper) by crops.
Fertilizer production – raw material for water-soluble/foliar fertilizers
- Recommended dosage: 0.2%—1.0% (adjust according to formulation).
- Directions for Use: Added as a chelating agent raw material in formulations of water-soluble, foliar, and fertigation fertilizers.
- Effect: improves fertilizer stability and increases micronutrient availability.
Industrial chelating agent – for detergents/bleaches
- Recommended dosage: 0.1%—0.5% (depending on process requirements).
- Directions for Use: Used together with other auxiliaries for metal cleaning and textile pretreatment before dyeing.
- Effect: Effectively chelates metal ions, preventing scale and deposit formation.
Precautions:DTPA is a solid powder; it must be dissolved in water before use, then mixed with other components. Specific application method and dosage can be adjusted according to actual process conditions. It is recommended to conduct trial tests before large-scale application.
Area of application
Nutrient elements for agriculture.
Used as a raw material for chelating agents in the production of various chelated micronutrient fertilizers, improving plant uptake of micronutrients such as iron, manganese, zinc, and copper.
Fertilizer production
Used for the production of chelated micronutrient fertilizers; it is an important raw material component for water-soluble, foliar, and fertigation fertilizers.
Frequently asked questions
DTPA (diethylenetriaminepentaacetic acid) and EDTA (ethylenediaminetetraacetic acid) are common chelating agents; the main differences are as follows:
- Coordination NumberDTPA has 5 coordination atoms (3 nitrogen, 2 carboxyl oxygen), EDTA has 4 coordination atoms; DTPA has higher chelating capacity.
- Applicable pH rangeDTPA has a wider working pH range (2-11), while EDTA's chelating capacity decreases under low pH conditions.
- Oxidative stabilityDTPA is more stable under oxidizing conditions, suitable for bleaching processes and alkaline soils.
DTPA acid is a white powder, slightly soluble in water, solubility about 1 g/L. Dissolution method:
- First neutralize with a small amount of sodium hydroxide or sodium carbonate solution to form a soluble salt.
- Then dilute to the required concentration for use.
- Or direct interaction with metal salts to form soluble chelates.
Storage Requirements:
- Store in a dry, well-ventilated warehouse.
- Protect from Direct Sunlight
- Store in stacks carefully to avoid packaging damage.
- Store in sealed, dry container.
Shelf Life 24 months (when stored in original sealed packaging).
Packaging specification:
- Standard packaging25 kg/bag
- Individual packagingOther packaging options available upon customer request
For minimum order quantity (MOQ) details, please contact our sales department; we will offer the optimal solution based on your needs.
Send Inquiry
Please fill in the information below, our commercial team will contact you.Within 2 working daysReply to you.
