What is the chemical MEG ( CAS 107-21-1) used for?

CAS 107-21-1 Monoethylene Glycol (MEG) is a colorless, odorless, and hygroscopic liquid belonging to the alcohol family. It is primarily produced from ethylene oxide and is one of the most important raw materials used in polyester and antifreeze industries. Due to its excellent properties such as high boiling point, low volatility, and ability to absorb water, has become an essential industrial chemical worldwide.

IUPAC Name: Ethane-1,2-diol

CAS Number: 107-21-1

Molar Mass: 62.07 g/mol

What is the chemical MEG ( CAS 107-21-1) used for?

1. Antifreeze & Coolant 

This is its most famous use. When mixed with water (typically in a 50:50 ratio), it:

• Lowers the freezing point of the liquid, preventing engine coolant from freezing in winter (down to -37℃ or -34℃F).

• Raises the boiling point, helping prevent overheating in summer.
• Provides corrosion inhibition for the metal components in cooling systems.

2. Raw Material for Polymers 

Ethylene glycol is a fundamental monomer for producing polyester.

Polyethylene Terephthalate (PET): This is the most important product. EG is reacted with terephthalic acid (PTA) or dimethyl terephthalate (DMT) to make PET resin, used for:

• Plastic bottles for beverages and water.
• Textile fibers (polyester fabric).
• Food containers and packaging films.

• Consistent Purity: Meet your specific technical and grade requirements.
• Global Logistics: We are experienced in seamless international shipping and documentation.
• Technical Support: Our team is here to support your projects.

was established in 2016, adhering to thecorporate philosophy of "global chemical raw material supplier" and focusing on high-quality chemical industries. The company primarily deals chemical raw materials, such as dichloromethane; methyl sulfoxide DMSO (industrial and pharmaceutical grade); ethylene glycol (MEG); p-Xylene, etc.

All our chemical productshave obtained international certifications including REACH, ISO, FMQS, HALAL, andHalal certification, ensuring quality and global recognition, We have warehouses in coreports such as Qingdao, Tianiin, and Shanghai, with a 15-day》delivery service.