Mono Ethylene Glycol

Mono Ethylene Glycol

CAS Number:107‑21‑1

Synonyms:Monoethylene glycol; Ethylene glycol; 1,2‑ethanediol; EG

Chemical Formula:C₂H₆O₂ (HOCH₂–CH₂OH)

Molecular Weight:62.07 g/mol

Product Introduction

A clear, colorless, mildly viscous, slightly sweet-tasting liquid with virtually no odor. Completely miscible with water and many organics, used as antifreeze/coolant, aircraft de-icer, polyester production intermediate, solvent, and desiccant.

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Physical & Chemical Properties

Property Value
Appearance Colorless, syrupy liquid
Odor Nearly odorless; slightly sweet taste
Density @ 20 °C ~1.115 g/mL
Melting Point −12.9 °C
Boiling Point ~197–198 °C
Flash Point 111 °C (closed cup)
Vapor Pressure @ 20 °C ~8 Pa (~0.06 mm Hg)
Solubility in Water Miscible
Log P (octanol/water) –1.69

Applications

  • Antifreeze/coolants/de-icers in automotive and aviation
  • Polyester resins & PET production
  • Industrial solvent/desiccant in gas/tarp systems and cellulose esters
  • Lab and specialty applications, including capacitor industries and cleaning

Safety & Handling

  • Toxic if ingested (metabolizes to oxalic and glycolic acids); use gloves/eye protection and avoid ingestion. Store sealed, away from heat.

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