Supplier of High-Quality Mono Ethylene Glycol-MEG
Introduction
Mono Ethylene Glycol (MEG) is a cornerstone chemical compound renowned for its versatility across global industries. Known chemically as C₂H₆O₂, this colorless, odorless, and hygroscopic liquid combines unique physical and chemical properties, making it indispensable in sectors like automotive, textiles, and chemical manufacturing. From enabling polyester production to safeguarding engines with antifreeze solutions, MEG’s role is pivotal. In this guide, we explore MEG’s properties, grades, applications, and safety protocols to highlight why it remains a critical industrial asset.
Physical and Chemical Properties
Understanding MEG’s characteristics is key to leveraging its industrial potential.
Physical Properties of MEG
- State: Liquid at room temperature
- Color & Odor: Colorless, odorless
- Melting Point: -12.9°C (10.8°F)
- Boiling Point: 197°C (386°F)
- Density: 1.113 g/cm³
- Solubility: Fully miscible with water, alcohols, and organic solvents
Chemical Properties of MEG
- Formula: C₂H₆O₂ (IUPAC Name: Ethane-1,2-diol)
- Flammability: Flash point of 111°C (232°F)
- Toxicity: Harmful if ingested; requires careful handling
Grades of Mono Ethylene Glycol
MEG is tailored into specialized grades to meet diverse industrial demands:
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Fiber Grade MEG
- Purity: ≥99.8%
- Uses: Polyester fibers, PET resins for textiles and packaging.
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Industrial Grade MEG
- Purity: Slightly lower than fiber grade.
- Uses: Antifreeze, de-icers, and industrial heat transfer fluids.
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Polyester Grade MEG
- Optimized for: PET production (bottles, films, textiles).
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Antifreeze Grade MEG
- Features: Additives for enhanced freeze protection.
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Low Conductivity MEG
- Critical for: Electronics and semiconductor manufacturing.
Top Applications of Mono Ethylene Glycol
1. Polyester and PET Manufacturing
Over 50% of global MEG production fuels polyester synthesis. MEG reacts with terephthalic acid to create PET resins, essential for textiles, beverage bottles, and food packaging.
2. Automotive Antifreeze and Coolants
MEG’s ability to depress freezing points to -40°C makes it ideal for engine coolants, protecting vehicles from freezing and overheating.
3. Heat Transfer Fluids
In HVAC and geothermal systems, MEG efficiently manages thermal energy, ensuring stable performance in extreme temperatures.
4. De-icing Solutions
Aviation and transportation sectors rely on MEG-based fluids to prevent ice buildup on aircraft and runways.
5. Chemical Intermediates
MEG serves as a precursor for resins, adhesives, and surfactants, underpinning products like paints and detergents.
6. Pharmaceuticals and Cosmetics
As a humectant, MEG retains moisture in lotions, creams, and oral care products.
How is Mono Ethylene Glycol Produced?
MEG is synthesized via ethylene oxide hydrolysis:
- Ethylene Oxidation: Ethylene reacts with oxygen to form ethylene oxide (EO).
- Hydration: EO is hydrolyzed under heat or catalysis to yield MEG.
- Purification: Distillation removes impurities, ensuring high-purity MEG for critical applications.
Modern plants employ catalytic hydration to boost efficiency and reduce environmental impact.
Safety Guidelines for Handling MEG
While invaluable, MEG demands cautious handling:
- PPE: Wear nitrile gloves, goggles, and lab coats.
- Ventilation: Use fume hoods in confined spaces.
- Storage: Keep in sealed containers away from heat sources.
- Spill Response: Contain leaks with inert absorbents; dispose per EPA guidelines.
Note: Chronic exposure may cause kidney damage—always follow OSHA safety protocols.
Packaging Solutions for Mono Ethylene Glycol
MEG is shipped in:
- Drums: 200L plastic/steel containers for small-scale needs.
- IBC Totes: 1,000–1,800L containers for mid-volume users.
- Bulk Tankers: Railcars or ISO tanks for industrial-scale delivery.
Select packaging based on volume, storage conditions, and transport regulations.
Conclusion
Mono Ethylene Glycol (MEG) is a linchpin of modern industry, driving innovation in polyester production, automotive safety, and chemical manufacturing. By adhering to safety standards and leveraging its adaptable properties, businesses can maximize MEG’s benefits while mitigating risks. Stay ahead in your industry by understanding how MEG’s unique capabilities align with your operational needs.
Read About TEG
TECHNICAL DATA SHEET OF MEG
| Characteristics | Unit | Specifications |
|---|---|---|
| Appearance | — | Clear Colourless |
| MEG Content | Wt % min | 99.9 |
| DEG Content | Wt % min | 0.04 |
| Specific Gravity | @20/20 Deg C | 1.1151-1.1156 |
| Water | Wt. % max | 0.04 |
| Color (before heating) | Pt-Co Units Max. | 5 |
| Acidity (as acetic acid) | Wt.ppm Max. | 10 |
| Chlorides (as CL) | Wt.ppm Max. | 0.1 |
| Sulfates | — | Nil |
| Iron | Wt.ppm Max. | 0.1 |
| Ash | Wt.ppm Max. | 10 |
| Aldehydes (as formaldehyde) | Wt.ppm Max. | 10 |