Overview
Ethylene glycol (EG), also known as monoethylene glycol (MEG), is a colorless, odorless, slightly viscous liquid with the chemical formula C₂H₆O₂ and CAS No. 107-21-1. It is widely used as an antifreeze and coolant, heat-transfer fluid, solvent, and raw material for polyester and PET production.
MEG has a low freezing point and relatively high boiling point, making it particularly useful where temperature control and freeze protection are required. It is an important industrial chemical used in automotive, HVAC, refrigeration, plastics, textiles, and chemical manufacturing.
Question1: What is the main use of ethylene glycol (CAS 107-21-1)?
Answer: Ethylene glycol (MEG) is primarily used as an antifreeze and coolant in automotive and industrial applications. Its low freezing point and high boiling point make it effective in regulating temperature. It is also frequently employed in heat transfer fluids, refrigeration systems and manufacturing processes as a solvent. Due to its effectiveness in heat management, it is crucial for ensuring optimal machinery performance and preventing corrosion.
Other major applications include:
- Automotive antifreeze and engine coolant
- Industrial heat-transfer fluids
- HVAC and refrigeration systems
- Heating and cooling systems
- Solvent applications
- Polyester fiber manufacturing
- PET resin and plastic production
- Chemical intermediates and industrial manufacturing
Its combination of water miscibility and effective heat-transfer properties makes ethylene glycol an important raw material for temperature-control applications.
Question2: Is Ethylene Glycol suitable for food applications?
Answer: No. Ethylene glycol (CAS 107-21-1) is toxic and poses health risks if ingested, so it is not suitable for food applications. Although it is widely used in industrial settings, proper safety measures must be taken to prevent accidental exposure. For food-grade applications, safer alternatives such as propylene glycol are recommended.
Question3: Why Is Ethylene Glycol Used as Antifreeze?
Answer: MEG is widely used in antifreeze formulations because it changes the freezing and boiling behavior of water.
Pure water freezes at 0°C, while an appropriately formulated water-MEG mixture can remain liquid at significantly lower temperatures. The mixture also provides useful protection against overheating because its boiling point is higher than that of water.
For this reason, ethylene glycol-based coolants are commonly used in:
- Passenger vehicles
- Trucks and commercial vehicles
- Industrial cooling systems
- HVAC equipment
- Refrigeration equipment
- Heat-transfer systems
The actual MEG concentration should be selected according to the equipment manufacturer's specifications and the required operating temperature.
Question4: Can ethylene glycol liquid be used in all types of vehicle?
Answer: While it can be used in many vehicles, it is crucial to check the manufacturer's specifications for your vehicle. Some newer models may require specific formulations or additives to meet performance standards. Using the wrong product could result in overheating or engine problems. Therefore, always consult your vehicle manual or a professional mechanic to ensure your vehicle is compatible with ethylene glycol coolant systems and to ensure optimal engine performance.
Question5: What safety precautions should I take when handling Ethylene Glycol (CAS 107-21-1)?
Answer: When handling EG (CAS 107-21-1), it is important to wear protective clothing, including gloves and goggles, to avoid contact with the skin and eyes. Additionally, ensure there is ample ventilation in the workspace to minimise inhalation of vapours. As EG is hazardous if ingested, it should be stored securely out of the reach of children and pets. When used in automotive or industrial applications, any spills must be cleaned up immediately in accordance with the relevant procedures to prevent environmental contamination.
Question6: How Should Ethylene Glycol CAS 107-21-1 Be Stored?
Answer: Store MEG in a cool, dry, and well-ventilated area, away from direct sunlight and incompatible materials.
Containers should remain tightly closed when not in use. Storage areas should be equipped with appropriate spill-control measures, and the product should be kept away from food and drinking water.
For commercial and industrial storage, always follow the supplier's SDS/MSDS and the applicable local regulations.
Question7: Ethylene Glycol Packaging
Answer: For bulk industrial supply, ethylene glycol can be supplied in different packaging formats according to quantity, transportation requirements, and customer specifications.
Current packaging option:
- Galvanized iron drum: 180 kg/drum
- 20-foot FCL: approximately 14.4 metric tons
Other packaging options may be available for larger-volume orders. Please contact GNEE BIO for current packaging, loading, and shipping details.
Question8: How to Choose the Right Ethylene Glycol Grade?
Answer: When purchasing MEG, buyers should consider more than the chemical name and CAS number. Important factors include:
1. Purity
Confirm the required MEG purity and specification before placing a bulk order.
2. Application
The required specification may differ depending on whether the product is intended for coolant, heat-transfer, polyester/PET, solvent, or another industrial application.
3. Documentation
For international B2B purchases, request the relevant COA, SDS/MSDS and TDS before shipment.
4. Packaging
Select drums, IBCs, or bulk transportation according to order volume and logistics requirements.
5. Destination and Shipping Requirements
The buyer and supplier should confirm applicable import, transportation, labeling, and documentation requirements for the destination market.
Question9: Is propylene glycol the same as ethylene glycol?
Answer: Ethylene glycol and propylene glycol are both clear, sweet-tasting liquids used as antifreeze and heat transfer fluids, but they are not interchangeable in every application.
| Feature | Ethylene Glycol (MEG) | Propylene Glycol |
| CAS No. | 107-21-1 | 57-55-6 |
| Main Use | Coolants, antifreeze, PET/polyester, heat transfer | Heat transfer, antifreeze, selected food/pharma applications |
| Toxicity | Toxic if ingested | Lower toxicity profile |
| Food Applications | Not suitable | Certain grades may be permitted under applicable regulations |
| Industrial Use | Very broad | Broad |
Request an Ethylene Glycol CAS 107-21-1 Quote
Looking for a reliable ethylene glycol supplier for bulk industrial orders?
GNEE BIO supplies chemical raw materials to international B2B customers and can provide product specifications and supporting documentation for qualified inquiries.
For an inquiry, please provide:
- Required quantity
- Required purity/specification
- Packaging requirements
- Destination port or delivery location
- Intended application
- Required shipping terms, if applicable
about us
GNEE BIO is a professional chemical raw material supplier and exporter with extensive international trade experience. We cooperate with qualified manufacturing partners to supply chemical products for customers in different markets worldwide.
Our services include bulk chemical supply, product documentation, customized packaging coordination, and international export support. Depending on the product and customer requirements, we can provide COA, SDS/MSDS, TDS and relevant export documentation.
Our customers are located across Asia, Europe, North America, Africa, and other international markets.
Storage condistion
Store in a cool, ventilated and dry place, avoid sunlight, and do not get close to the fire source. Pay attention to handle with care when handling, and transport according to the provisions of toxic substances
