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Portuguese Tetrasodium EDTA (EDTA-4Na)
EDTA-4Na – High Performance Alkaline Chelating Agent
Tetrasodium EDTA (EDTA-4Na) is the fully neutralized tetrasodium salt of EDTA with sodium hydroxide. It appears as a white crystalline powder, is readily soluble in water, and its aqueous solution is strongly alkaline. As a highly efficient metal ion chelator, it forms stable, water-soluble complexes with calcium, magnesium, copper, iron, lead, and other metal ions. It is widely used in household and industrial detergents, industrial cleaning, and water treatment.
- Efficiently chelates calcium, magnesium, and heavy metals
- Prevents soap scum and equipment scaling
- Enhances detergency and foamability
- Stable and effective in alkaline systems
- Removes toxic heavy metals in wastewater treatment
| Paramètres | Spécifications |
|---|---|
| Content (as C₁₀H₁₂N₂O₈Na₄·4H₂O) % | 99.50% Min. |
| Chloride (Cl⁻) % | 0.01% Max. |
| Sulfate (SO₄²⁻) % | 0.05% Max. |
| Heavy Metals (as Pb) % | 0.001% Max. |
| Iron (Fe) % | 0.001% Max. |
| Chelation Value (mgCaCO₃/g) | 220 Min. |
| pH (1% solution, 25℃) | 10.5 – 11.5 |
| NTA Content % | 0.1% Max. |
| Apparence | Poudre cristalline blanche |
Product Specifications (Daily Chemical Grade)
Key property: A 1% EDTA-4Na solution has a pH of 10.5–11.5 (strongly alkaline), making it especially suitable for alkaline detergents and cleaning systems.
Recommended Dosage Guidelines
Remarque : Actual dosage should be optimized through laboratory testing based on water hardness, heavy metal concentration, and formulation pH.
| Application | Dosage recommandé | Fonction |
|---|---|---|
| Laundry Liquid / Dish Soap | 0.5% – 2.0% of total formulation | Hard water chelation, improved detergency |
| Industrial Alkaline Cleaner | 1% – 5% | Water softening, soap scum prevention |
| Boiler / Circulating Cooling Water | 10 – 100 ppm (continuous feed) | Scale inhibition, softening |
| Electroplating Wastewater | 1:1 – 3:1 molar ratio (based on heavy metal concentration) | Chelation of copper, nickel, lead, etc. |
| Printing & Dyeing Wastewater | 0.1 – 0.5 g/L | Chelate metal ions, prevent dye precipitation |
Request Your Free EDTA-4Na Sample
Experience the chelation performance of high-purity EDTA-4Na in your alkaline system firsthand.
At Tenessy, experience our EDTA-4Na product firsthand with a FREE sample!
- Taille de l'échantillon : 25kg or 50kg.
- Expédition : Rapide via FedEx ou DHL.
- Service : Aide à l'ajustement de la formule par des experts.
Why Choose EDTA-4Na?
Performs Excellently in Strongly Alkaline Systems
Extremely High Water Solubility & Dissolution Rate
Highly Effective Chelation of Calcium, Magnesium & Heavy Metals
Prevents Soap Scum & Equipment Scaling
EDTA-4Na vs. EDTA-2Na: Key Differences
| Comparison | EDTA-4Na (Tetrasodium) | EDTA-2Na (Disodium) |
|---|---|---|
| pH (solution 1%) | Strongly alkaline (10.5–11.5) | Weakly acidic / Near neutral (5–6) |
| Water Solubility | Extremely high, fast dissolution | Good, slightly lower than EDTA-4Na |
| Optimal Chelation Efficiency | Alkaline environments | Neutral / weakly acidic environments |
| Suitable Applications | Alkaline formulations, high hardness water, high heavy metal content | Neutral / weakly acidic formulations (daily chemicals, food, pharmaceuticals) |
| Chelation Characteristics | Strong, rapidly chelates Ca/Mg and multiple heavy metals | Mild and stable, suitable for standard formulations |
Main Application Areas
EDTA-4Na is widely used as a high-performance chelating agent and water softener across daily chemicals, industrial cleaning, and water treatment industries.
Daily Chemicals (Alkaline Detergents)
Laundry Liquid, Dish Soap, Industrial Cleaners
- Acts as a detergent builder and water softener, chelating calcium and magnesium ions in hard water
Improves detergency and foamability
Prevents soap scum formation and avoids oxidation of active ingredients
Alkaline Personal Care Products
- Used as a stabilizer in some alkaline facial cleansers and body washes
Chelates metal ions to extend product shelf life
Industrial Cleaning & Water Treatment
Hard Water Softening & Scale Inhibition
Effective water softener for boilers, circulating cooling water, and heat exchangers
Chelates calcium and magnesium ions to prevent new scale formation
Can dissolve some existing scale and inhibit corrosion
Wastewater Treatment
Electroplating wastewater, printing & dyeing wastewater, mining wastewater
Chelates heavy metals such as copper (Cu²⁺), nickel (Ni²⁺), lead (Pb²⁺), and zinc (Zn²⁺)
Reduces heavy metal toxicity for subsequent precipitation or recovery
EDTA-4Na Packaging & Storage
We offer flexible packaging solutions to meet the diverse needs of our clients.
Sac de 25 kg
Standard powder packaging with moisture-proof function to ensure the stability of the product during transportation and storage.
Emballage personnalisé
