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Technical specifications
Basic Information
| Project | Parameters |
|---|---|
| Product Name | Tetrasodium EDTA |
| Alternative Product Name | EDTA-4Na, tetrasodium salt of ethylenediaminetetraacetic acid |
| English name | EDTA-4Na / Tetrasodium EDTA |
| Molecular Formula | C₁₀H₁₂N₂O₈Na₄·4H₂O |
| Molecular weight | 452.23 |
| CAS No. | 13235-36-4 |
| Appearance | White Crystalline Powder |
Technical specifications for industrial grade
| Control Parameter | Standard |
|---|---|
| Content (Calculated as 452.2) | 99.00% Min. |
| Chlorides (Cl⁻) | 0.01% Max. |
| Sulfates (SO₄²⁻) | 0.05% Max. |
| Heavy Metals (Pb) | 0.001% Max. |
| Iron (Fe) | 0.001% Max. |
| Chelation Value | 220 Min. (mgCaCO₃/g) |
| pH (1% aqueous solution, 25°C) | 10.5 — 11.5 |
| NTA | 1.0% Max. |
| Appearance | White Crystalline Powder |
Technical specifications for household chemicals
| Control Parameter | Standard |
|---|---|
| Content (Calculated as 452.2) | 99.50% Min. |
| Chlorides (Cl⁻) | 0.01% Max. |
| Sulfates (SO₄²⁻) | 0.05% Max. |
| Heavy Metals (Pb) | 0.001% Max. |
| Iron (Fe) | 0.001% Max. |
| Chelation Value | 220 Min. (mgCaCO₃/g) |
| pH (1% aqueous solution, 25°C) | 10.5 — 11.5 |
| NTA | 0.1% Max. |
| Appearance | White Crystalline Powder |
Technical Specifications of Spray Grade
| Control Parameter | Standard |
|---|---|
| Content (Calculated as 452.2) | 99.30% Min. |
| Chlorides (Cl⁻) | 0.01% Max. |
| Sulfates (SO₄²⁻) | 0.03% Max. |
| Heavy Metals (Pb) | 0.001% Max. |
| Chelation Value | 220 Min. (mgCaCO₃/g) |
| pH (1% aqueous solution, 25°C) | 10.5 — 12.5 |
| NTA | 3.0% Max. |
| Bulk density (g/L) | 600 — 800 |
| Appearance | White Powder |
Technical specifications for tetrasodium salt dihydrate
| Control Parameter | Standard |
|---|---|
| Content (Calculated as 452.2) | 107.00% Min. |
| Chlorides (Cl⁻) | 0.01% Max. |
| Sulfates (SO₄²⁻) | 0.05% Max. |
| Heavy Metals (Pb) | 0.001% Max. |
| Iron (Fe) | 0.001% Max. |
| Chelation Value | 234 Min. (mgCaCO₃/g) |
| pH (1% aqueous solution, 25°C) | 10.5 — 11.5 |
| Appearance | White Crystalline Powder |
Product description
Product overview
Ethylenediaminetetraacetic acid tetrasodium salt (EDTA-4Na), formula C₁₀H₁₂N₂O₈Na₄·4H₂O, molecular weight 452.23, CAS No. 13235-36-4. It is a white crystalline powder, readily soluble in water, possessing excellent chelating properties, forming stable water-soluble complexes with various metal ions. Available in different grades: industrial, household chemical, spray-dried, tetrasodium salt dihydrate, and others.
Key Advantages
- Various specifications availableIndustrial and household chemicals, spray grade, tetrasodium salt dihydrate, and other specifications.
- High purityIndustrial grade: content ≥99.00%, household grade: content ≥99.50%
- Excellent chelating capacityHigh chelating ability, effectively binds various metal ions.
- Alkaline propertiespH 10.5-11.5, suitable for alkaline formulation systems.
- High solubilityWater solubility higher than EDTA-2Na.
- Wide ApplicationUsed in cosmetics, petroleum, food, textile and other industries.
Comparison of Product Advantages
| Grade | Content | NTA | Field of Application |
|---|---|---|---|
| Industrial Grade | ≥99.00% | 1.0% Max. | Industrial cleaning, oil, textiles |
| Household grade | ≥99.50% | 0.1% Max. | Cosmetics, personal care products, detergents |
| Spray grade | ≥99.30% | 3.0% Max. | Spray drying, liquid formulations |
| Disodium Tetraborate Dihydrate | ≥107.00% | — | Highly concentrated formula |
Specification and Grade
Application recommendations
Recommended dosage
| Area of application | Recommended dosage | Description |
|---|---|---|
| Detergent | 0.1-2% | Enhanced detergency, water softening |
| Cosmetics / Personal Care | 0.05-0.5% | Maintain product stability, prevent color change |
| Textile printing and dyeing | 0.5-2% | Chelation of metal ions to enhance coloring quality |
| Industrial cleaning | 0.5-5% | Adjustment according to cleaning requirements and formulation |
Dissolution Method
- Slowly add EDTA-4Na powder to water with constant stirring
- To accelerate dissolution, it is recommended to use warm water (40-50°C).
- When dissolved, the solution becomes alkaline, which is normal.
- Can be used together with other alkaline substances
- The specific dosage should be adjusted according to formulation requirements, specific application, and local regulations.
- Avoid direct mixing with strongly acidic substances to prevent reduction of chelating effect.
- Store in a dry place, avoid moisture and caking
Area of application
Cosmetics
Used as a chelating agent in cosmetics to prevent discoloration and spoilage caused by metal ions, enhancing product stability.
Personal hygiene products
Used in soaps, shampoos, and other personal care products to enhance cleansing effect and preserve product formulation stability.
Petroleum industry
Used as an anti-caking agent to prevent metal ion precipitation in petroleum products and improve product quality.
Food additive
Used as a food additive to prevent oxidative spoilage caused by metal ions during food processing.
Textile Production
Used in textile dyeing to chelate metal ions, improving dyeing quality and fabric properties.
Detergent
Added to detergents to enhance cleaning power, soften water, and improve washing efficiency.
Industrial cleaning
Used in industrial cleaners for effective removal of oxides and contaminants from metal surfaces.
- Store in a dry, well-ventilated area, protected from direct sunlight.
- Careful stacking, gentle handling
- Protect from moisture and rain during transport
Frequently asked questions
Main Differences Among Four Specifications:
- ContentHousehold grade: ≥99.50% max; industrial grade: ≥99.00%; spray grade: ≥99.30%; tetrasodium salt dihydrate: ≥107.00% calculated on anhydrous basis.
- NTA contentHousehold grade is the strictest (≤0.1%), suitable for personal care products; spray grade is more lenient (≤3.0%), suitable for spray drying processes.
- Bulk densitySpraying requires special treatment (600-800 g/L), good flowability
- Selection recommendationsFor cosmetics and personal care products, select household grade; for industrial cleaning, select industrial grade; for spray drying formulations, select spray grade.
Key differences between EDTA-2Na (disodium salt) and EDTA-4Na (tetrasodium salt):
- Chemical FormEDTA-2Na is the disodium salt of ethylenediaminetetraacetic acid, EDTA-4Na is the tetrasodium salt.
- pH valueAqueous EDTA-2Na solution is slightly acidic (pH 4.0-5.0), while aqueous EDTA-4Na solution is alkaline (pH 10.5-11.5).
- SolubilityEDTA-4Na has higher water solubility and dissolves more easily.
- Application selectionChoose the salt form according to the pH requirements of the formulation and the specific application. Alkaline formulations are more suitable for EDTA-4Na.
Shelf Life of the Product Is24 monthsDuring storage, avoid direct sunlight and humid environment.
Yes, we provide free samples for customer testing. Please contact our sales team for specific sample quantities and shipping cost details.
Standard minimum order quantity is one pallet (approximately 1 ton). For special grades or custom packaging requirements, please contact our sales team for details.
The product is already exported to regions including Southeast Asia, the Middle East, and Europe; export documents provided include:
- Commercial Invoice
- Packing List
- Certificate of Origin (CO)
- SDS/MSDS (Multilingual Version)
- Certificate of Analysis (COA)
- Other required certification documents
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