EDTA Tetrasodium Salt

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EDTA Tetrasodium Salt

EDTA Tetrasodium Salt

EDTA Tetrasodium Salt is the tetrasodium salt form of ethylenediaminetetraacetic acid, with the chemical formula C??H??N?Na?O?. It is a white, water-soluble, crystalline powder or granule widely used as a chelating agent to sequester metal ions like calcium, magnesium, and iron. Its ability to form stable complexes with metal ions makes it highly valuable in industrial, pharmaceutical, cosmetic, and cleaning formulations. It helps improve product stability, prevent discoloration, soften water, and control metal-catalyzed degradation.

Applications of EDTA Tetrasodium Salt

Industry	Application
Water Treatment	Binds metal ions to prevent scaling and fouling
Detergents & Cleaners	Enhances cleaning power by softening water
Cosmetics & Personal Care	Prevents metal-induced spoilage in creams, shampoos, lotions
Textile & Dyeing	Controls metal ion interference during dyeing processes
Pharmaceuticals	Stabilizer in formulations; used in ophthalmic and injectable solutions
Food Industry	Chelating agent to preserve color, flavor, and texture (when food grade)
Laboratory Chemicals	Used in buffers, analytical chemistry, and titrations
Agriculture	Stabilizes metal micronutrients in foliar sprays and fertilizers

Features with Practical Uses

Feature	Use / Benefit
Strong chelating power	Sequesters metal ions (Ca²?, Mg²?, Fe³?) to prevent scale or degradation
High water solubility	Easily blends into aqueous solutions and formulations
Alkaline nature (pH ~11–12)	Suitable for use in alkaline formulations (e.g., industrial cleaners)
Non-toxic in controlled amounts	Safe for use in cosmetics and pharmaceuticals (check regulatory standards)
Improves product stability	Prevents oxidation, discoloration, and viscosity change in formulations
White crystalline or powder form	Easy to handle, store, and measure
Compatible with surfactants	Enhances detergent and personal care product effectiveness
Biodegradable (slowly)	Lower environmental persistence compared to phosphates

Top 10 FAQs About EDTA Tetrasodium Salt

What is EDTA Tetrasodium Salt used for?
It is used as a chelating agent in water treatment, cosmetics, cleaners, and pharmaceutical products.
How does EDTA Tetrasodium Salt work?
It binds (chelates) metal ions like calcium and magnesium, preventing their interaction with other chemicals.
Is it the same as EDTA?
It is a salt form of EDTA, more soluble and alkaline, often preferred in aqueous and alkaline formulations.
What is the pH of EDTA Tetrasodium Salt?
It is alkaline in nature, with a typical pH of 11 to 12 in a 1% solution.
Is EDTA Tetrasodium Salt safe in cosmetics?
Yes, it is approved for cosmetic use, often in low concentrations (0.1%–0.5%).
Can EDTA Tetrasodium Salt be used in food?
Only food-grade EDTA is approved in some countries for specific applications (e.g., canned vegetables).
Does it harm the environment?
EDTA has moderate biodegradability, so its disposal must follow environmental regulations.
What is the difference between disodium and tetrasodium EDTA?
Tetrasodium EDTA is more alkaline and water-soluble; disodium EDTA is used for neutral pH formulations.
Is EDTA Tetrasodium Salt corrosive?
It is not strongly corrosive but can irritate the skin and eyes in concentrated form.
How is it stored?
Store in a cool, dry place in tightly sealed containers, away from moisture and incompatible materials.

Key Points Summary

Full Name: Ethylenediaminetetraacetic Acid Tetrasodium Salt
Chemical Formula: C??H??N?Na?O?
Appearance: White crystalline powder or granules
Solubility: Highly water-soluble
Main Function: Chelating agent – binds metal ions
pH: Alkaline (around 11–12)
Primary Uses: Water treatment, detergents, cosmetics, pharmaceuticals, food preservation
Regulatory: Approved in many personal care and industrial uses; food use depends on grade and country
Handling: Mild irritant – use gloves and protective eyewear when handling large quantities
Sustainability Note: Moderately biodegradable; environmental discharge must be controlled