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Technical Specifications
Test Indicators
| No. | Test Items | Standard |
|---|---|---|
| 1 | Content | 99.00% Min. |
| 2 | Chloride (Cl⁻) | 0.01% Max. |
| 3 | Sulfate (SO₄²⁻) | 0.05% Max. |
| 4 | Heavy metals (Pb) | 0.001% Max. |
| 5 | Iron (Fe) | 0.001% Max. |
| 6 | Chelation value | 339 Min. (mgCaCO₃/g) |
| 7 | pH value (50g/L, 25℃) | 2.8 — 3.0 |
| 8 | Appearance | White Crystalline Powder |
Physical and Chemical Properties
| Projects | Description |
|---|---|
| Appearance | White Crystalline Powder |
| CAS No. | 60-00-4 |
| Melting point | 240°C (decomposition) |
| Water Solubility | Insoluble in cold water, alcohol, and common organic solvents, slightly soluble in hot water, soluble in sodium hydroxide, sodium carbonate, and ammonia solutions |
| Chemical Formula | C₁₀H₁₆N₂O₈ |
| Molecular Weight | 292.24 g/mol |
Product Introduction
Product Overview
Ethylenediaminetetraacetic Acid (EDTA) is an important organic compound and an aminopolycarboxylic acid chelating agent. White crystalline powder, purity ≥99%, melting point 240°C (decomposition). Insoluble in cold water, alcohol, and common organic solvents, slightly soluble in hot water, soluble in sodium hydroxide, sodium carbonate, and ammonia solutions.
Key Features
- High PurityContent ≥99%, low impurity content, stable and reliable quality
- Strong Chelating AbilityChelation value 339 mg CaCO₃/g, forms stable complexes with a variety of metal ions
- Wide ApplicationsApplicable to water treatment, cleaning products, chemical processing, papermaking, textile, and other industrial fields.
- Good StabilityStable chemical properties for easy storage and transportation
User Guide
Dissolution Method
EDTA is insoluble in cold water but soluble in sodium hydroxide, sodium carbonate, and ammonia solutions. It is typically mixed with an appropriate amount of alkali (such as sodium hydroxide) to form EDTA salts (e.g., EDTA-2Na or EDTA-4Na) before use, making it more soluble in water.
Common Application Ratios
| Applications | Recommended Dosage | Instructions |
|---|---|---|
| Water Treatment | 10-100 mg/L | Adjust dosage according to water hardness |
| Cleaning Products | 0.5-5% | Use with surfactants |
| Textile Printing & Dyeing | 0.5-2 g/L | Removes metal ions, improves dyeing results |
Usage Suggestions
- Neutralize with alkaline substances (such as sodium hydroxide) to form water-soluble salts before use.
- Heating accelerates dissolution; it is recommended to operate in hot water at 60–80°C.
- Adjust dosage based on specific application and water quality
- Wear protective gloves during operation and avoid prolonged skin contact.
Applications
Pulp and paper production
Improves bleaching effect, maintains paper brightness, and enhances product quality.
Cleaning Products
Mainly used for descaling, it is an important ingredient in detergents and cleaning agents.
Chemical Processing
Used in polymer stabilization and oil production industries.
Fertilizer & Agriculture
Used as a chelating agent in water-soluble fertilizers such as foliar and fertigation fertilizers.
Water Treatment
Controls water hardness and prevents scaling, an important additive for industrial circulating water treatment.
Textiles
Used in textile dyeing and finishing to remove metal ions and improve dyeing results.
- Store in a dry and ventilated warehouse away from direct sunlight.
- Stack lightly to prevent package damage
- Protect from moisture and rain during transport
- Avoid mixing with strong oxidizers
FAQ
Chelation value refers to the milligrams of calcium carbonate (CaCO₃) that 1 gram of EDTA can chelate, in mg CaCO₃/g. This product has a chelation value ≥339, indicating strong metal ion chelation ability.
EDTA is insoluble in cold water but soluble in sodium hydroxide, sodium carbonate, and ammonia solutions. It is typically mixed with an appropriate amount of alkali (such as sodium hydroxide) to form EDTA salts (e.g., EDTA-2Na or EDTA-4Na) before use, making it more soluble in water.
Store in a dry, ventilated warehouse away from direct sunlight, handle with care.
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