Ethylene Glycol,

Ethylene Glycol

Ethylene glycol (EG) is a colorless, odorless, sweet-tasting, hygroscopic liquid commonly used as an antifreeze, coolant, and industrial solvent. Chemically classified as a diol (a glycol), its formula is C₂H₆O₂ and it has two hydroxyl groups, which make it highly polar and reactive.

Specifications:

• Chemical Name: Ethane-1,2-diol

• CAS Number: 107-21-1

• Molecular Formula: C₂H₆O₂

• Molar Mass: 62.07 g/mol

• Appearance: Clear, colorless liquid

• Odor: Odorless or slightly sweet

• Boiling Point: ~197.3 °C

• Melting Point: ~–12.9 °C

• Density: ~1.11 g/cm³ at 20°C

• Solubility: Miscible with water, alcohols, acetone

• Toxicity: Toxic if ingested (harmful or fatal); affects kidneys, CNS

Uses:

• Antifreeze and Coolant: Major component in automotive and HVAC cooling systems

• Industrial Solvent: Used in paints, inks, plastics, and resins

• Deicing Fluid: For aircraft and runways

• Polymer Production: Intermediate in the manufacture of polyesters (e.g., PET)

• Heat Transfer Fluid: In solar power plants, HVAC systems, and geothermal systems

• Biochemical Applications: As a cryoprotectant in biological samples

Features:

• ✅ Excellent freeze-point depression – Ideal for cold-weather systems

• ✅ High boiling point – Effective in heat transfer applications

• ✅ Water miscibility – Easy to dilute and blend for custom formulations

• ✅ Low volatility – Reduces evaporative loss

• ✅ Stable under normal conditions – Long shelf life

• ⚠️ Toxic to humans and animals – Must be handled with care

• ✅ Widely used in industry – Economically available and well-understood