How Different Industries Use MEG Monoethylene Glycol (CAS No.107-21-1)?

CAS No 107-21-1 Monoethylene Glycol (MEG) is a widely utilized industrial chemical. Characterized by its excellent solubility and superior freezing-point depression capabilities, it serves as a critical feedstock in the manufacture of polyesters, providing robust support for a diverse range of industrial production requirements.

1. Polyester and Plastics Industry (Largest Application Sector)

This sector consumes over 60% of total MEG production, making it the largest market for the chemical.
As a core raw material, Monoethylene Glycol (MEG) is primarily used in the manufacture of:
PET resins, used for plastic bottles, packaging materials, and films;
Polyester fibers, used for clothing, fabrics, and carpets.
Through chemical reactions, it combines with PTA (Purified Terephthalic Acid) to form stable PET polymers. The resulting finished products are durable, lightweight, and highly recyclable.

2. Antifreezes and Automotive Coolants

MEG is a primary constituent of vehicle coolants.
Common applications include automotive radiators, heavy-duty truck engines, and industrial cooling systems.
It effectively lowers the freezing point of water, preventing freeze-induced damage during cold seasons, while simultaneously raising the boiling point to prevent engine overheating, thereby ensuring reliable performance in extreme temperature environments.

3. HVAC and Industrial Heat Transfer Systems

In air conditioning and refrigeration equipment, it circulates within cooling pipelines, acting as a heat transfer medium.
This fluid protects outdoor piping from freeze-induced damage and is widely utilized in data centers, food processing plants, and chemical manufacturing facilities.

4. Chemical Manufacturing Industry

Industrial-grade MEG can be processed into a variety of chemical intermediates and industrial solvents.
It facilitates the production of resins and plasticizers, and is frequently incorporated into the formulations of inks, pigments, and coatings. Due to its excellent compatibility with both water and organic substances, it is ideally suited for industrial mixing and formulation applications.

5. De-icing and Anti-icing Applications

It is added to specialized anti-icing mixtures used for aircraft surface de-icing, airport runway defrosting, and the seasonal freeze protection of pipelines, effectively inhibiting ice formation and accumulation in low-temperature environments.

6. Oil and Gas Industry

During natural gas transmission, liquid ethylene glycol prevents the formation of hydrate accumulations inside pipelines, thereby ensuring the smooth and stable flow of natural gas in cold climates. Most of the spent MEG can be recovered and reused within a closed-loop system.

7. Textile and Fiber Processing

In addition to its use in the production of polyester fibers, monoethylene glycol is also formulated into fiber finishing agents and dyeing auxiliaries, helping to regulate and control the moisture content of fibers throughout the entire textile processing workflow.

Conclusion

MEG (Monoethylene Glycol) serves as an indispensable basic industrial raw material, with primary applications spanning polyester production, automotive antifreeze, and heat transfer systems. Its stable thermal properties, water solubility, and chemical reactivity make it widely applicable across a diverse range of industrial sectors.

CAS 107-21-1 MEG Raw Material Supplier in China

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