EDTA Tetrasodium

Industrial & Food Grade Chelating Agent — Bulk supply across India & International Markets

What is EDTA Tetrasodium?

EDTA Tetrasodium is the fully neutralised sodium salt of EDTA (Ethylenediaminetetraacetic Acid), with all four carboxylic acid groups converted to sodium salts. This gives it an alkaline pH and excellent water solubility, making it one of the most widely used chelating agent forms across detergent, water treatment, textile, and food preservation applications where strong metal-binding capability at alkaline pH is required.

Polychem Industries supplies EDTA Tetrasodium in industrial grade and food grade to detergent manufacturers, water treatment companies, textile processors, and food preservation companies across India and internationally. Its strong alkaline chelating performance and excellent water solubility make it a preferred chelator across heavy-duty industrial and food applications.

Available Grades

GradeFormPurityStandardApplications
Industrial GradeWhite crystalline powder99%+ (Industrial / Food Grade)IndustrialDetergents, water treatment, textile processing, industrial cleaning
Food GradeWhite crystalline powder99%+FSSAI / FCCFood preservation, colour retention, canned products

Applications & Uses

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Detergents & Industrial Cleaning

Widely used in heavy-duty liquid and powder detergents as a builder and chelating agent, sequestering calcium, magnesium, and trace metal ions to improve surfactant performance and prevent scale and metal staining on cleaned surfaces.

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Water Treatment

Used extensively in industrial water treatment systems including boilers and cooling towers to chelate metal ions, preventing scale formation and metal-catalysed corrosion that can reduce system efficiency and equipment lifespan.

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Food Preservation & Colour Retention

Food Grade EDTA Tetrasodium is used in canned foods, sauces, and certain beverages to chelate trace metal ions that could otherwise catalyse oxidative discoloration or off-flavour development, helping preserve colour and quality during extended shelf life.

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Textile Processing

Used in textile dyeing, bleaching, and finishing operations to chelate metal ions in process water, preventing unwanted catalytic effects during bleaching and ensuring consistent, predictable dye uptake.

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Pulp & Paper Industry

Used in pulp bleaching processes to chelate metal ions that could otherwise catalyse peroxide decomposition, helping improve bleaching efficiency and reduce peroxide consumption in paper manufacturing.

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Industrial Chemical Processing

Used as a chelating agent across various industrial chemical processes requiring strong metal ion sequestration at alkaline pH conditions.

Technical Specifications

EDTA Tetrasodium — Key Properties

Chemical FormulaC10H12N2Na4O8
CAS Number64-02-2
Molecular Weight380.17 g/mol (anhydrous)
AppearanceWhite crystalline powder
Purity99%+ (Industrial / Food Grade)
Melting Point>300°C (decomposes)
Density / Bulk DensityBulk density: 0.6–0.8 g/cm3
pH10.0 – 12.0 (1% solution, alkaline)
Packaging Available25 kg bags
StorageStore in cool, dry place away from moisture. Non-hygroscopic and chemically stable in normal storage conditions.

Why Source EDTA Tetrasodium from Polychem Industries?

  • Industrial Grade and Food Grade available with full documentation
  • FSSAI compliant Food Grade supply with Certificate of Analysis
  • Excellent water solubility and chelating performance at alkaline pH
  • Reliable bulk supply for detergent and water treatment companies
  • Competitive pricing with consistent year-round availability
  • Export documentation experience for international shipments

Frequently Asked Questions

Why is EDTA Tetrasodium preferred for alkaline detergent formulations?
EDTA Tetrasodium is already fully neutralised and alkaline, making it readily compatible with the alkaline pH typical of heavy-duty detergent formulations without requiring additional pH adjustment. Its excellent water solubility at alkaline pH also ensures it remains fully dissolved and active throughout the wash process, providing consistent metal ion chelation performance.
How does EDTA Tetrasodium help in food preservation?
EDTA Tetrasodium chelates trace metal ions (particularly iron and copper) present in food products that would otherwise catalyse oxidative reactions, leading to colour changes, off-flavours, and nutrient degradation. By sequestering these metals, EDTA helps preserve the colour, flavour, and nutritional quality of canned and processed foods over their shelf life.
Is EDTA Tetrasodium the same chelating strength as EDTA Disodium?
Both forms have the same fundamental EDTA chelating chemistry and similar binding strength for metal ions on a molar basis, but they differ in pH and solubility characteristics due to their different degrees of sodium neutralisation. The choice between them depends primarily on the pH requirements and solubility needs of the specific formulation rather than chelating strength differences.
Do you export EDTA Tetrasodium outside India?
Yes. We export to Bangladesh, Sri Lanka, Nepal, Bhutan, and South Africa with full export documentation. Contact us for export pricing and lead times.

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