Hydroxyethylethylenediaminetriacetic acid

CAS Number
150-39-0
EC Number
205-759-3
Abbreviation
HEDTA

What is Hydroxyethylethylenediaminetriacetic acid?

Hydroxyethylethylenediaminetriacetic acid (CAS 150-39-0), commonly known as HEDTA, is a chelating agent used in industrial and personal care applications.

Where is Hydroxyethylethylenediaminetriacetic acid used?

  • Personal care: deactivates trace metal ions that degrade active ingredients, preventing discoloration
  • Water treatment: controls scale formation and metal ion interference in process water and cooling systems
  • Textile and paper processing: sequesters hardness ions during bleaching and dyeing
  • Cleaning formulations: keeps calcium and magnesium ions from reducing surfactant efficiency
  • It binds and sequesters metal ions, particularly calcium, magnesium, iron, and heavy metals.

Good to know: Technical grade is the standard offering for industrial applications including water treatment; personal care applications may require grades meeting cosmetic or purity specifications aligned with industry standards.

Other Names (Synonyms)

Hydroxyethylethylenediamintriacetic acid|2-[2-[bis(carboxymethyl)amino]ethyl-(2-hydroxyethyl)amino]acetic acid|HEDTA

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What are the physical properties of Hydroxyethylethylenediaminetriacetic acid?

Melting Point 159 °C
Boiling Point 421.08°C (rough estimate)
Density 1.3300 (rough estimate)
Appearance Crystalline
Color White to Almost white
Form powder to crystal
Water Solubility soluble
Vapor Pressure 0.01Pa at 20℃
Refractive Index 1.4550 (estimate)
Log P -4.65 at 20℃

How is Hydroxyethylethylenediaminetriacetic acid classified and handled safely? Learn More

Danger
GHS05· Corrosive GHS07· Irritant GHS09· Environmental Hazard

Hazard Statements

H302 Harmful if swallowed
H315 Causes skin irritation
H318 Causes serious eye damage
H319 Causes serious eye irritation

Precautionary Statements

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.
P271 Use only outdoors or in a well-ventilated area.

Which trade and regulatory codes apply to Hydroxyethylethylenediaminetriacetic acid?

HS Code 29224999
Storage Class 11 - Combustible Solids
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