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

  1. What is EDTA Tetrasodium Salt used for?
    It is used as a chelating agent in water treatment, cosmetics, cleaners, and pharmaceutical products.
  2. How does EDTA Tetrasodium Salt work?
    It binds (chelates) metal ions like calcium and magnesium, preventing their interaction with other chemicals.
  3. Is it the same as EDTA?
    It is a salt form of EDTA, more soluble and alkaline, often preferred in aqueous and alkaline formulations.
  4. 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.
  5. Is EDTA Tetrasodium Salt safe in cosmetics?
    Yes, it is approved for cosmetic use, often in low concentrations (0.1%–0.5%).
  6. Can EDTA Tetrasodium Salt be used in food?
    Only food-grade EDTA is approved in some countries for specific applications (e.g., canned vegetables).
  7. Does it harm the environment?
    EDTA has moderate biodegradability, so its disposal must follow environmental regulations.
  8. 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.
  9. Is EDTA Tetrasodium Salt corrosive?
    It is not strongly corrosive but can irritate the skin and eyes in concentrated form.
  10. 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

 

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