Mono Ethylene Glycol (MEG) is a widely used industrial chemical belonging to the glycol family. It is a clear, colorless, odorless, and slightly viscous liquid with a sweet taste. Chemically, it is known as Ethane-1,2-diol with the formula CHO.
Key Specifications
| Property |
Value |
| Chemical Formula |
CHO |
| Molecular Weight |
62.07 g/mol |
| Appearance |
Clear, colorless liquid |
| Odor |
Odorless |
| Density |
~1.113 g/cm at 20C |
| Boiling Point |
~197C |
| Freezing Point |
~ -12.9C |
| Purity (Industrial Grade) |
99.5% |
| Solubility |
Completely miscible with water |
| Viscosity |
Low to moderate |
Description
Mono Ethylene Glycol (MEG) is primarily produced via the hydration of ethylene oxide, which itself is derived from petrochemical feedstocks like ethylene. It is hygroscopic in nature (absorbs moisture from air) and has excellent heat transfer properties, making it ideal for thermal systems.
Key Applications
1. Polyester & PET Production
- Used as a raw material in manufacturing polyethylene terephthalate (PET) resin.
- Found in:
- Plastic bottles
- Polyester fibers (textiles)
- Packaging materials
2. Antifreeze & Coolants
- Major component in automotive coolants.
- Prevents freezing in winter and overheating in summer.
3. Heat Transfer Fluids
- Used in HVAC systems, refrigeration, and industrial cooling systems.
4. Dehydration Agent
- Used in natural gas processing to remove water vapor.
5. Chemical Intermediate
- Used in resins, solvents, inks, and plasticizers.
Functions
- Freezing Point Depression Lowers freezing point of water-based systems.
- Boiling Point Elevation Raises boiling point for better thermal stability.
- Moisture Absorption Hygroscopic nature helps in drying applications.
- Heat Transfer Medium Efficient transfer of heat in industrial systems.
- Chemical Building Block Key raw material for polymers and resins.
Benefits
- Excellent thermal stability
- High water solubility
- Cost-effective industrial chemical
- Improves system efficiency in cooling/heating
- Enhances durability of polymers
- Reduces corrosion when used with inhibitors
Safety & Handling
- Toxic if ingested; proper handling required.
- Use PPE: gloves, goggles, protective clothing.
- Store in tightly sealed containers away from moisture.
- Avoid environmental discharge.
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