Tetrasodium EDTA CAS 64-02-8 | Bulk Chelating Agent Supplier

• Tetrasodium EDTA (INCI Name: Tetrasodium EDTA, Chemical Name: Ethylenediaminetetraacetic Acid Tetrasodium Salt, CAS 64-02-8) is a strong alkaline high-efficiency chelating agent that appears as white crystalline powder and is readily soluble in water.
  
  
• It forms stable water-soluble complexes with metal ions such as calcium, magnesium and iron, and exhibits the strongest chelating capacity in alkaline media (pH ≥ 8).
  
  
• This versatile ingredient is widely used in industrial water treatment (scale inhibition and removal), textile dyeing and printing, detergent and cleaning products, cosmetics and pharmaceutical preparations industries.
  
  
• As a professional source manufacturer, we supply high-purity Tetrasodium EDTA (≥ 99.0%) with stable and consistent bulk supply capacity for global customers.

1. Strong Alkaline High-Efficiency Chelation

Superior pH Advantage: Compared with EDTA-2Na, it has stronger alkalinity and exhibits the strongest chelating capacity in alkaline media with pH ≥ 8. It is particularly suitable for hard water treatment and alkaline detergent products.

Stable Chelation Performance: Forms extremely stable water-soluble complexes with metal ions such as Ca²⁺, Mg²⁺ and Fe³⁺, effectively preventing precipitation and discoloration in various systems.

2. Versatile Cross-Industry Compatibility

Industrial Water Treatment: Effectively inhibits scale formation and removes existing deposits, extending the service life of boilers and cooling water systems.

Textile Dyeing & Printing: Eliminates metal ion interference, significantly improving dyeing uniformity and color brightness.

Detergent & Cleaning Products: Enhances decontamination power and improves foam quality by softening hard water.

Cosmetics: Acts as a mineral chelator to stabilize formulation systems and prevent product deterioration.

3. Direct Supply from Source Manufacturer

Own mature production lines with sufficient annual production capacity

Guaranteed stable on-time delivery for large bulk orders

Offer highly competitive ex-factory prices with consistent product quality

1. Industrial Water Treatment & Cleaning

Boiler & Cooling Water Treatment: Removes calcium and magnesium ions, prevents scale deposition, and improves heat transfer efficiency

Metal Surface Cleaning: Used in etching, rust prevention and metal cleaner formulations

Pipeline Unclogging & Descaling: Efficiently chelates hard water scale under alkaline conditions

2. Textile Dyeing & Printing Industry

Dyeing Processes: Chelates metal ions (Fe³⁺, Cu²⁺) in water, prevents color spots, and enhances color uniformity and brightness

Fiber Cooking: Improves paper whiteness and reduces scale formation in digesters

Acrylic Fiber Spinning: Counteracts metal interference in dry acrylic spinning processes

3. Detergent & Personal Care Products

Liquid Detergents & Laundry Products: Chelates calcium and magnesium ions in hard water, improves washing efficiency and foam quality

Soaps, Body Washes & Shampoos: Acts as a metal ion chelator to enhance cleaning power and prevent soap scum formation

Skincare Formulations: Synergizes with preservative and antioxidant systems to improve product stability

4. Pharmaceutical & Biotechnology Applications

Color Photographic Materials: Used in photographic bleaching and fixing solutions

Styrene-Butadiene Rubber: Serves as an activator and stabilizer

Diagnostic Reagents & Biopharmaceuticals: Stabilizes proteases and prevents metal ion-catalyzed degradation

5. Other Industrial Applications

Paper Industry: Improves paper whiteness and reduces equipment scaling

Electroplating & Metal Finishing: Controls metal ion concentrations in plating baths

Q1: What is EDTA-4Na?

A: EDTA-4Na (INCI Name: Tetrasodium EDTA, Chemical Name: Ethylenediaminetetraacetic Acid Tetrasodium Salt, CAS 64-02-8, EINECS: 200-573-9) is a strong alkaline high-efficiency chelating agent. Its molecular formula is C₁₀H₁₂N₂Na₄O₈ with a molecular weight of 380.17 g/mol. The commercial form is an odorless white crystalline powder, readily soluble in water and insoluble in alcohols, benzene and chloroform.

Q2: How does EDTA-4Na work as a chelating agent?

A: EDTA-4Na works through a six-coordination bond mechanism to form stable 1:1 molar ratio complexes with most divalent and trivalent metal ions such as Ca²⁺, Mg²⁺ and Fe³⁺.

Its unique advantage is that it exhibits the strongest chelating capacity in alkaline media (pH ≥ 8), making it the preferred chelating agent for hard water treatment, alkaline detergents and textile dyeing processes.

Q3: What are the main applications of EDTA-4Na?

A: EDTA-4Na is a versatile industrial ingredient used across five major industries:

Industrial Water Treatment: Scale inhibitor and cleaner for boilers, cooling water systems and pipelines

Textile Dyeing & Printing: Color fixing agent and metal ion remover for dyeing processes

Detergent & Cleaning Products: Hard water softener and decontamination enhancer for laundry detergents and cleaners

Cosmetics & Personal Care: Mineral chelator and formulation stabilizer for shampoos, soaps and skincare products

Pharmaceutical & Industrial: Stabilizer for diagnostic reagents, photographic processing solutions and rubber production

Q4: What is the recommended dosage of EDTA-4Na?

A: Dosage varies by application:

Industrial water treatment: 5 - 50 mg/L depending on water hardness

Textile dyeing: 0.1 - 1.0 g/L of dye bath

Laundry detergents: 0.1% - 0.5% of total formulation

Cosmetics: 0.05% - 0.2% for most formulations

Metal cleaning: 1% - 5% for heavy-duty cleaners

Q5: What grades and forms of EDTA-4Na do you offer?

A: As a professional source manufacturer, we provide:

Grades: Industrial grade (≥99.0%), cosmetic grade (≥99.0%), pharmaceutical grade (USP/EP)

Forms: Anhydrous tetrasodium EDTA, tetrasodium EDTA dihydrate

Custom grades: Available upon request for specific application requirements

Q6: What is the formulation compatibility of EDTA-4Na?

A: EDTA-4Na exhibits excellent compatibility in alkaline systems:

pH stability: Stable in formulations with pH 8.0 - 12.0

Temperature stability: Stable up to 120°C, suitable for most high-temperature processing

Ingredient compatibility: Fully compatible with anionic surfactants, alkaline builders and most industrial chemicals

Synergistic effects: Works exceptionally well with sodium hydroxide, sodium carbonate and other alkaline agents

Q7: What are the storage and packaging requirements for EDTA-4Na?

A:Storage conditions: Store in a cool, dry and well-ventilated place at 5°C - 30°C, away from acids and moisture

Shelf life: 24 months from the date of manufacture under proper storage conditions

Standard packaging: 25kg bags (PE inner bag + woven outer bag), 1 ton jumbo bags

Custom packaging: Available upon request

Q8: Do you support stable bulk supply of EDTA-4Na?

A: Yes. As a professional source manufacturer with mature EDTA salt production lines, we guarantee:

Annual automated production capacity of over 8,000 tons

Consistent product quality meeting international standards

Stable on-time delivery for large bulk orders

Highly competitive ex-factory prices

Complete COA, MSDS and regulatory documentation

Professional technical support for application optimization