Manufacturing, EDTA is used to improve stability of some pharmaceutical products, detergents, liquid soaps, shampoos, agricultural chemical sprays, contact lens cleaners and cosmetics. It is also used in certain blood collection tubes used by medical laboratories.

Wide areas of application for EDTA 4 Na liquid

• Metal-containing deposits
• Calcium-associated fouling
• Magnesium deposits
• Iron fouling
• Manganese deposits
• Certain inorganic scale deposits
• Metal-organic complexes
• Difficult mixed fouling

• Heat exchangers
• Boilers and process equipment
• Cooling-water systems
• Industrial vessels
• Pipelines
• Process-water systems
• Metal-cleaning formulations
• Detergent formulations
• Water-treatment chemicals
• Pulp and paper processing
• Textile processing
• Industrial CIP systems

Dosage

RXSOL Tetrasodium EDTA 40% should not be considered a universal RO membrane cleaner by itself.

The correct cleaning chemistry depends on the foulant. Acid cleaning is generally used for carbonate/mineral scale, while alkaline cleaning is commonly used for organic and biological fouling. EDTA is particularly useful where metal-ion fouling or metal-associated deposits are involved.

DuPont's FilmTec manual gives 1.0 wt% Na₄EDTA + 0.1 wt% NaOH as an alternative cleaning formulation under specified membrane cleaning conditions.

Suggested EDTA CIP Starting Formulation

For compatible RO membranes:

This provides approximately:

1.0% active Na₄EDTA

Notes

Useful area

Benefits of using EDTA Tetrasodium liquid in Reverse Osmosis Membrane Cleaning

RXSOL Tetrasodium EDTA 40% can provide:

Metal Ion Sequestration
Captures calcium, magnesium, iron and other polyvalent ions.

Deposit Loosening
Helps destabilize metal-containing deposits and make them more soluble/dispersible.

Reduced Re-precipitation
Keeps captured metal ions in soluble complexed form during cleaning.

Improved Cleaning Chemistry
Can be combined with alkaline cleaning systems where appropriate.

Concentrated Liquid Format
Easy metering compared with handling solid EDTA powder.

Industrial area

EDTA-4Na 40% Aqueous Solution

Tetrasodium EDTA Solution 40%

Product Description

EDTA-4Na 40% Aqueous Solution is a concentrated liquid solution of Tetrasodium Ethylenediaminetetraacetate (Tetrasodium EDTA), a powerful water-soluble chelating and sequestering agent.

The product forms stable, water-soluble complexes with polyvalent metal ions such as calcium, magnesium, iron, copper, manganese and zinc. By binding these metal ions, EDTA-4Na helps prevent unwanted precipitation, scale formation, metal-catalyzed reactions and interference with industrial processes.

The 40% liquid form provides convenient handling, rapid dispersion and accurate dosing compared with solid EDTA salts and is suitable for use in water treatment, industrial cleaning, detergents, textile processing, chemical formulations and other industrial applications.

Typical Specifications

Final specification limits should be confirmed from actual production batches.

Applications

EDTA-4Na 40% Solution is widely used in:

• Industrial water treatment
• Cooling-water treatment formulations
• Boiler and process-water treatment
• Scale-control formulations
• Industrial cleaning chemicals
• Detergents and alkaline cleaners
• Metal cleaning and surface treatment
• Textile processing
• Pulp and paper processing
• Oilfield chemical formulations
• Chemical manufacturing
• Metal-ion control
• Formulations requiring stabilization against trace metals

Water Treatment

In water-treatment formulations, EDTA-4Na binds calcium, magnesium, iron and other dissolved metal ions, helping keep them in soluble complexes and reducing their ability to interfere with treatment processes or contribute to undesirable deposits.

It is particularly useful where hardness sequestration and trace-metal control are required.

Industrial Cleaning

EDTA-4Na can improve detergent and cleaner performance by binding hardness ions that would otherwise interfere with surfactants and alkaline cleaning agents.

It is useful in formulations for:

Heavy-duty cleaners, degreasers, equipment cleaners, alkaline cleaning formulations and scale-removal/support formulations.

Advantages

EDTA-4Na 40% Solution provides high chelating efficiency, excellent water solubility, convenient liquid handling and compatibility with many alkaline formulations. Its liquid form eliminates the dissolution step associated with powdered EDTA and makes it particularly suitable for automated dosing and large-scale industrial formulation.

Storage & Handling

Store in the original tightly closed container in a cool, dry and well-ventilated location. Protect against extreme temperatures and contamination.

Because EDTA-4Na 40% solution is alkaline, appropriate gloves and eye protection should be used during handling. Refer to the product SDS for complete safety and handling requirements.

Supply location

Keywords

Key Features of EDTA 4 Na solution

• 40% active tetrasodium EDTA
• Strong chelation of Ca²⁺, Mg²⁺, Fe³⁺ and other polyvalent ions
• Helps dissolve and disperse metal-containing deposits
• Excellent water solubility
• Particularly useful in alkaline cleaning systems
• Suitable for RO membrane CIP when membrane compatibility is confirmed
• Helps prevent re-deposition of metal ions
• Compatible with many alkaline cleaning formulations
• Useful for industrial descaling and deposit removal
• Concentrated liquid for easy dosing