
Mono ethylene glycol(MEG)
Description of Mono Ethylene Glycol (MEG)
Mono ethylene glycol(MEG) (also known as MEG, EG, 1,2-ethanediol, or 1,2-dihydroxyethane) is an organic compound with the formula C2H6O2. It is a slightly viscous liquid with a clear, colorless appearance and a sweet taste that emits virtually no odor.
It’s miscible with water, alcohol, and many other organic compounds and is primarily used in the industry for manufacturing polyester fibers and as a component in the production of antifreeze, coolants, aircraft anti-icers, and de-icers.
It is mainly used for two purposes, as a raw material in the manufacture of polyester fibers and for antifreeze formulations. It is an odorless, colorless, sweet-tasting, viscous liquid.
(MEG) is produced from ethylene via ethylene oxide, which in turn is hydrated by using either a thermal or catalytic production process.
It is a type of glycol, an organic compound belonging to the alcohol family, and is known for its antifreeze and solvent properties.
Uses and Applications of Mono ethylene glycol(MEG)
Mono ethylene glycol(MEG) is a versatile chemical with a wide range of uses across various industries due to its unique properties. Here are the primary uses and applications of MEG:
- Antifreeze and Coolants
– Automotive Industry : MEG is a key component in the manufacture of antifreeze and coolant products for vehicles. It prevents the freezing of the engine coolant in cold weather and increases the boiling point to avoid overheating in warm conditions. This is one of its most well-known and widespread uses.
– HVAC Systems : In heating, ventilation, and air conditioning (HVAC) systems, MEG is used in antifreeze solutions to protect pipes and equipment from freezing. - Polyester Production
– Polyethylene Terephthalate (PET) : MEG is a critical raw material in the production of PET, which is widely used to manufacture plastic bottles, containers, and polyester fibers. PET is the most common thermoplastic polymer resin of the polyester family.
– Textile Industry : The polyester fibers produced using MEG are used in a variety of textile applications, including clothing, home furnishings, and industrial fabrics. - Dehydration of Natural Gas
– Natural Gas Processing : MEG is used in the natural gas industry to remove water from natural gas. It acts as a dehydration agent, preventing the formation of gas hydrates that can block pipelines and equipment, particularly in cold climates. - Chemical Intermediary
– Production of Other Chemicals : MEG serves as an intermediate in the production of various chemicals, including resins, solvents, and plasticizers. These chemicals are used in numerous industrial processes and products. - Heat Transfer Fluids
– Industrial Applications : MEG is used in heat transfer fluids due to its high boiling point and low freezing point. It is commonly employed in systems requiring temperature regulation, such as in refrigeration units and solar power plants. - Hydraulic and Brake Fluids
– Automotive and Industrial Applications : MEG is also a component in hydraulic fluids and brake fluids, providing the necessary properties for effective operation in various temperature conditions. - Solvent
– Paints and Coatings : MEG is used as a solvent in the production of paints, coatings, and inks. It helps in improving the stability and performance of these products.
– Adhesives and Sealants : MEG is included in the formulation of adhesives and sealants due to its ability to improve the flexibility and bonding properties. - Humectant
– Cosmetics and Personal Care Products : MEG is used as a humectant in certain cosmetics and personal care products. It helps retain moisture in products like creams, lotions, and conditioners. - Manufacture of Cigarette Humectants
– Tobacco Industry : MEG is used as a humectant in the production of cigarettes to maintain moisture and enhance the shelf-life of the product. - De-icing Fluids
– Aviation Industry : MEG is used in de-icing fluids for aircraft to remove ice and frost from wings and other surfaces, ensuring safe operation during cold weather conditions.
Key Characteristics of (MEG)
- Chemical Formula: MEG’s chemical formula is C₂H₆O₂, and it is also known as ethylene glycol.
- Physical Properties:-Boiling Point: 197.3°C (387.1°F)
-Freezing Point: -12.9°C (8.8°F)
-Density: About 1.113 g/cm³ at 20°C (68°F)
-Viscosity: MEG is slightly viscous, with a syrupy consistency. - Solubility*: MEG is highly soluble in water, alcohol, and some organic solvents, making it versatile in different formulations.
Mono ethylene Glycol (MEG) Packaging: Ensuring Safe and Transport and Storage
Mono ethylene Glycol (MEG) is a critical industrial chemical with a diverse range of applications. As a result, its packaging needs to be as adaptable as the product itself. This document outlines the common methods employed for MEG packaging, emphasizing the importance of selecting the most suitable option for each scenario.
Tailored Packaging Solutions:
- Small Quantities: For volumes typically up to 230 kilograms, MEG is most commonly packaged in corrosion-resistant steel or high-density polyethylene (HDPE) drums. These robust containers ensure the safe storage and transportation of MEG while maintaining product integrity.
- Medium Quantities: For larger volumes, typically up to 1000 liters, Intermediate Bulk Containers (IBCs) are the preferred option. These reusable containers feature a rigid plastic body housed within a protective steel cage. This design offers a cost-effective and secure solution for transporting and storing medium quantities of MEG.
- Bulk Quantities: For very large volumes, MEG is transported and stored in bulk storage tanks. These industrial-grade tanks, typically constructed from carbon or stainless steel, can hold significant amounts of MEG and cater to the needs of large-scale manufacturing facilities.
Factors Influencing Packaging Selection:
The selection of the most appropriate packaging for MEG hinges on several key factors:
- Quantity: The volume of MEG being transported or stored dictates the size and type of container required. This ensures optimal efficiency and minimizes potential waste.
- Intended Use: The final destination and application of MEG play a crucial role in packaging selection. Industrial facilities might require bulk storage tanks, while smaller quantities destined for specific uses might be best suited for drums.
- Regulatory Compliance: Strict adherence to local and international regulations governing MEG transportation and storage is paramount. The chosen packaging must comply with all applicable regulations to ensure safety and legal compliance throughout the supply chain.
Health and Safety Considerations:
- Toxicity : Mono ethylene glycol(MEG) is toxic if ingested, inhaled, or absorbed through the skin, causing serious health issues, including central nervous system depression, kidney failure, and even death in severe cases.
- Handling : Proper protective equipment should be used when handling MEG to prevent exposure, and it should be stored in a well-ventilated area, away from heat sources.

Specification of Mono ethylene Glycol (MEG)
| Appearance | Colourless, transparent |
| Purity | 99.8 wt % min |
| Colour (Pt-Co) | 5 max |
| DEG | 0.08 wt % max |
| Water | 0.08 wt % max |
| Specific gravity, 20/20 C | 1.1151-1.1156 |
| Boiling range at 0.1013 Mpa | – |
| 5% vol | Min. 196 C |
| 95% vol | Max. 199 C |
| Aldehydes (as formaldehyde ) | 8 mg/kg max |
| Acidity (as acetic acid) | 10 mg/kg max |
| Iron (as Fe) | 0.1 mg/kg max |
| Inorganic chlorides (as Cl) | 0.05 mg/kg max |
| Ash | 50 mg/kg max By Req=10 mg/kg max |
| UV Transmittance | – |
| -220nm | 80 min |
| -275nm | 95 min |
| -350 m | 99 min |



