Trisodium EDTA

CAS Number
150-38-9
EC Number
205-758-8

What is Trisodium EDTA?

Trisodium EDTA (CAS 150-38-9) is a water-soluble chelating agent that binds and neutralizes metal ions in aqueous systems. It is the trisodium salt form of EDTA, offering a moderately alkaline pH profile.

Where is Trisodium EDTA used?

  • Personal care and cosmetics: sequesters calcium and magnesium ions in hard water, protecting preservative systems and maintaining product clarity
  • Pharmaceuticals: stabilizes liquid preparations by deactivating trace metals
  • Water treatment: controls scale formation and metal ion interference in process water
  • Textile and paper processing: prevents metal-catalyzed discoloration during bleaching
  • It improves batch consistency and end-product quality in industrial dyeing operations.

Good to know: Suits applications where the tetrasodium form would be too basic for the specific chemical environment. It prevents metals from catalyzing oxidative degradation, ensuring the longevity of the final product.

Commercial specifications

  • White crystalline powder or aqueous solution at 40–50% concentrations
  • Bulk quantities standard for industrial buyers; smaller packaging for laboratory and specialty formulation requirements

Other Names (Synonyms)

trisodium salt of ethylenediaminetetraacetic acid|trisodium ethylenediaminetetraacetate|N,N'-1,2-ethanediylbis[N-(carboxymethyl)glycine] trisodium salt|ethylenediaminetetraacetic acid trisodium salt|EDTA trisodium|(ethylenedinitrilo)tetraacetic acid trisodium salt|Edetate trisodium|EDTA trisodium salt

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What are the physical properties of Trisodium EDTA?

Melting Point >300 °C
Density 1.69[at 20℃]
Appearance white powder
Color White to off-white
Form Liquid
Water Solubility 212.9g/L at 20℃
Vapor Pressure 0.007Pa at 50℃
pH 8
Log P -3.8 at 25℃

How is Trisodium EDTA classified and handled safely? Learn More

Danger
GHS05· Corrosive GHS07· Irritant GHS08· Health Hazard

Hazard Statements

H302 Harmful if swallowed
H318 Causes serious eye damage
H319 Causes serious eye irritation
H332 Harmful if inhaled
H373 May causes damage to organs through prolonged or repeated exposure
H302+H332 Harmful if swallowed or if inhaled

Precautionary Statements

P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash … thoroughly after handling.
P270 Do not eat, drink or smoke when using this product.

Which trade and regulatory codes apply to Trisodium EDTA?

HS Code 29173990
Storage Class 11 - Combustible Solids
WGK (Germany) 3
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