中文
English
Русский
Technical Specifications
Quality Indicators
| Test 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 (10g/L, 25℃) | 2.1 — 2.5 |
| Appearance | White Powder |
Physical Properties
| Item | 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 highly efficient polyamino polycarboxylic chelating agent. White powder, purity ≥99.0%, CAS 67-43-6, molecular formula C₁₄H₂₃N₃O₁₀, molecular weight 393.35. DTPA has strong chelating ability, forms stable complexes with various metal ions, widely used in agricultural nutrients and fertilizer production.
Key Advantages
- High PurityContent ≥99.0%, extremely low impurity levels (chloride ≤0.01%, sulfate ≤0.05%, iron ≤0.001%)
- High Chelation ValueChelation value ≥ 252 mg CaCO₃/g, strong chelating ability
- Acidic ProductpH value 2.1-2.5 (10g/L, 25°C), suitable for acidic systems
- Wide ApplicationPremium raw materials for agricultural nutrients and fertilizer production
Application Guide
Recommended Usage for Industrial Applications
Agricultural Nutrients — Micronutrient Chelated Fertilizer
- Recommended dosage: 0.5%—2.0% (of total fertilizer)
- Usage: Reacts with metal salts (such as ferrous sulfate, zinc sulfate) to form chelated trace element fertilizers
- Effect: Improves crop absorption and utilization of trace elements such as iron, manganese, zinc, and copper
Fertilizer production — raw materials for water-soluble and foliar fertilizers
- Recommended dosage: 0.2%–1.0% (adjust according to formulation)
- Usage: Add as a chelating agent raw material to water-soluble fertilizer, foliar fertilizer, and irrigation fertilizer formulations
- Effect: Enhances fertilizer stability and improves micronutrient utilization
Industrial chelating agents — cleaning agents and bleach
- Recommended dosage: 0.1%–0.5% (adjust according to process requirements)
- Usage: Used in combination with other auxiliaries for metal cleaning, textile printing and dyeing pretreatment
- Effect: Effectively chelates metal ions, preventing precipitation and scale formation
Precautions:DTPA Acid is a solid powder, must be dissolved in water before mixing with other raw materials. Specific usage and dosage can be adjusted based on actual process conditions. Small-scale testing is recommended before large-scale application.
Applications
Agricultural nutrients
Used as a chelating agent raw material to prepare various micronutrient chelated fertilizers, improving crop absorption and utilization of trace elements such as iron, manganese, zinc, and copper.
Fertilizer Production
Used in the production of chelated trace element fertilizers, it is an important raw material additive for water-soluble fertilizers, foliar fertilizers, and irrigation fertilizers.
FAQ
DTPA (Diethylenetriaminepentaacetic Acid) and EDTA (Ethylenediaminetetraacetic Acid) are both common chelating agents, with the main differences being:
- Number of coordinating atomsDTPA has 5 coordination atoms (3 nitrogen, 2 carboxyl oxygen), EDTA has 4 coordination atoms, DTPA has stronger chelating ability
- Applicable pH rangeDTPA has a wider applicable pH range (2-11), while EDTA's chelating ability decreases under low pH conditions
- Oxidation StabilityDTPA is more stable under oxidizing conditions, suitable for bleaching processes and alkaline soils
DTPA acid is a white powder, slightly soluble in water, with a solubility of about 1g/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 desired concentration before use
- Or reacts directly with metal salts to form soluble chelates
Storage requirements:
- Store in a dry and ventilated warehouse
- Keep away from direct sunlight
- Stack lightly and handle with care to avoid packaging damage
- Keep container sealed and dry
Shelf life: 24 months (stored sealed in original packaging).
Packaging Specifications:
- Standard Packaging25 kg/bag
- Custom PackagingOther packaging specifications available upon request
For minimum order quantity, please consult our sales team, and we will provide the optimal solution based on your needs.
Send Inquiry
Please fill in the information below, and our business team willWithin 2 working daysReply to you.
