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Technical Specifications
Basic Information
| Item | Parameters |
|---|---|
| Product Name | EDTA Tetrasodium Salt |
| Product Alias | EDTA tetrasodium, Ethylenediaminetetraacetic acid tetrasodium salt |
| English Name | EDTA-4Na / Tetrasodium EDTA |
| Molecular Formula | C₁₀H₁₂N₂O₈Na₄·4H₂O |
| Molecular Weight | 452.23 |
| CAS Number | 13235-36-4 |
| Appearance | White crystalline powder |
Industrial Grade Specifications
| Test item | Standard |
|---|---|
| Content (as 452.2) | 99.00% Min. |
| Chloride (Cl⁻) | 0.01% Max. |
| Sulfate (SO₄²⁻) | 0.05% Max. |
| Heavy Metals (Pb) | 0.001% Max. |
| Iron (Fe) | 0.001% Max. |
| Chelating Value | 220 Min. (mgCaCO₃/g) |
| pH (1% aqueous solution, 25℃) | 10.5 — 11.5 |
| NTA | 1.0% Max. |
| Appearance | White crystalline powder |
Daily Chemical Grade Specifications
| Test item | Standard |
|---|---|
| Content (as 452.2) | 99.50% Min. |
| Chloride (Cl⁻) | 0.01% Max. |
| Sulfate (SO₄²⁻) | 0.05% Max. |
| Heavy Metals (Pb) | 0.001% Max. |
| Iron (Fe) | 0.001% Max. |
| Chelating Value | 220 Min. (mgCaCO₃/g) |
| pH (1% aqueous solution, 25℃) | 10.5 — 11.5 |
| NTA | 0.1% Max. |
| Appearance | White crystalline powder |
Spray Grade Specifications
| Test item | Standard |
|---|---|
| Content (as 452.2) | 99.30% Min. |
| Chloride (Cl⁻) | 0.01% Max. |
| Sulfate (SO₄²⁻) | 0.03% Max. |
| Heavy Metals (Pb) | 0.001% Max. |
| Chelating Value | 220 Min. (mgCaCO₃/g) |
| pH (1% aqueous solution, 25℃) | 10.5 — 12.5 |
| NTA | 3.0% Max. |
| Bulk density (g/L) | 600 — 800 |
| Appearance | White Powder |
Disodium Tetraborate Decahydrate Specifications
| Test item | Standard |
|---|---|
| Content (as 452.2) | 107.00% Min. |
| Chloride (Cl⁻) | 0.01% Max. |
| Sulfate (SO₄²⁻) | 0.05% Max. |
| Heavy Metals (Pb) | 0.001% Max. |
| Iron (Fe) | 0.001% Max. |
| Chelating Value | 234 Min. (mgCaCO₃/g) |
| pH (1% aqueous solution, 25℃) | 10.5 — 11.5 |
| Appearance | White crystalline powder |
Product Introduction
Product Overview
Tetrasodium EDTA (EDTA-4Na), Molecular Formula C₁₀H₁₂N₂O₈Na₄·4H₂O, Molecular Weight 452.23, CAS 13235-36-4. White crystalline powder, easily soluble in water, with excellent chelating properties, forms stable water-soluble complexes with various metal ions. Available in industrial grade, cosmetic grade, spray grade, and dihydrate tetrasodium grades.
Core Advantages
- Multiple Specifications AvailableAvailable in various grades including industrial, cosmetic, spray, and dihydrate tetrasodium
- High purityIndustrial grade purity ≥99.00%, daily chemical grade purity ≥99.50%
- Excellent Chelating AbilityHigh chelation value, effectively chelates multiple metal ions
- Alkaline PropertiespH 10.5-11.5, suitable for alkaline formulations
- High SolubilityHigher solubility in water than EDTA-2Na
- Wide ApplicationSuitable for cosmetics, petroleum, food, textile and other industries
Product advantage comparison
| Grade | Content | NTA | Application Areas |
|---|---|---|---|
| Industrial Grade | ≥99.00% | 1.0% Max. | Industrial cleaning, petroleum, textile |
| Daily Chemical Grade | ≥99.50% | 0.1% Max. | Cosmetics, Personal Care, Detergents |
| Spray grade | ≥99.30% | 3.0% Max. | Spray drying, liquid formulation |
| Disodium EDTA | ≥107.00% | — | High Concentration Formula |
Specification Grade
Application Reference
Recommended Dosage
| Application Scenarios | Recommended Dosage | Description |
|---|---|---|
| Detergent | 0.1-2% | Enhances detergency, softens water |
| Cosmetics / Personal Care | 0.05-0.5% | Maintains Product Stability, Prevents Discoloration |
| Textile Dyeing & Printing | 0.5-2% | Chelates Metal Ions to Improve Dyeing Quality |
| Industrial Cleaning | 0.5-5% | Adjust according to cleaning requirements and formulation |
Dissolution Method
- Slowly add EDTA-4Na powder to water while stirring
- It is recommended to use warm water (40-50°C) to accelerate dissolution
- The solution is alkaline during dissolution, which is normal
- Compatible with Other Alkaline Substances
- The specific dosage should be adjusted according to formula requirements, specific applications, and local regulations.
- Avoid direct mixing with strong acidic substances to prevent reduced chelation effect
- Store in a dry place to prevent moisture absorption and caking
Applications
Cosmetics
Used as a chelating agent in cosmetics to prevent discoloration and deterioration caused by metal ions, improving product stability.
Personal Care
Used in personal care products such as soap and shampoo to enhance cleaning effectiveness and protect formula stability.
Petroleum Industry
Used as an anti-caking agent to prevent metal ion precipitation in petroleum products, enhancing product quality.
Food Additive
Used as a food additive to prevent oxidative deterioration caused by metal ions during food processing.
Textile Manufacturing
Used in textile dyeing and printing to chelate metal ions, improving dyeing quality and fabric performance.
Detergent
Added to detergents to boost cleaning power, soften water, and improve washing performance.
Industrial Cleaning
Used in industrial cleaners to effectively remove oxides and dirt from metal surfaces.
- Store in a dry and ventilated warehouse, protected from direct sunlight
- Stack Lightly, Handle with Care
- Prevent Moisture and Rain During Transport
FAQ
Main differences among the four specifications:
- ContentCosmetic grade ≥99.50% max, industrial grade ≥99.00%, spray grade ≥99.30%, dihydrate tetrasodium ≥107.00% on anhydrous basis
- NTA ContentCosmetic grade most stringent (≤0.1%), suitable for personal care products; spray grade looser (≤3.0%), suitable for spray drying processes
- Bulk DensitySpray grade with special requirements (600-800 g/L), good fluidity
- Selection SuggestionsChoose cosmetic grade for cosmetics and personal care products, industrial grade for industrial cleaning, and spray-dried grade for spray-dried formulas.
Main differences between EDTA-2Na (disodium salt) and EDTA-4Na (tetrasodium salt):
- Chemical FormEDTA-2Na is the disodium salt of ethylenediaminetetraacetic acid, and EDTA-4Na is the tetrasodium salt.
- pH ValueEDTA-2Na aqueous solution is weakly acidic (pH 4.0-5.0), EDTA-4Na aqueous solution is alkaline (pH 10.5-11.5)
- SolubilityEDTA-4Na has higher solubility in water and dissolves more easily
- Application SelectionSelect the appropriate salt form based on the pH requirements of the formula and specific application. EDTA-4Na is more suitable for alkaline formulas.
When stored in original sealed packaging in a cool, dry, well-ventilated place, the shelf life of this product is24 MonthsStore away from direct sunlight and humid environments
Yes, we offer free samples for customer testing. Please contact our sales team for specific sample quantity and shipping details.
Standard MOQ is one pallet (approx. 1 ton). For special specifications or custom packaging requirements, please contact our sales team.
This product has been exported to Southeast Asia, the Middle East, Europe, and other regions. Available export documents include:
- Commercial Invoice
- Packing List
- Certificate of Origin (CO)
- SDS/MSDS (multilingual versions)
- Certificate of Analysis (COA)
- Other required certification documents
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