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Glycols are a class of organic compounds that are characterized by the presence of two hydroxyl (-OH) groups. These compounds are typically derived from petrochemical sources and are known for their hygroscopic properties, making them effective as solvents and antifreeze agents. Glycols are commonly used in various industrial applications, including the production of plastics, resins, and antifreeze formulations.
| Chemical formula | C2H6O2 for ethylene glycol |
| Boiling point | 197.6 °C for ethylene glycol |
| Melting point | -12.9 °C for ethylene glycol |
| Density | 1.11 g/cm³ for ethylene glycol |
| Purity levels | Typically 99% or higher |
When selecting glycols, buyers should consider the specific type of glycol required for their application, such as ethylene glycol or propylene glycol. It's important to specify the desired purity level, as higher purity glycols are often needed for sensitive applications like pharmaceuticals and food processing. Additionally, buyers should inquire about certifications and compliance with relevant industry standards, as well as the quantity needed for their operations.
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The most common types are ethylene glycol and propylene glycol.
Ethylene glycol is primarily used as an antifreeze and coolant in automotive applications.
Propylene glycol is generally recognized as safe for food applications, while ethylene glycol is toxic.
Glycols should be stored in a cool, dry place away from direct sunlight and incompatible materials.
Yes, glycols can be recycled and reused in various applications.
Glycols can be harmful to aquatic life if released into the environment, so proper disposal is essential.