Application and comparing’s of EG and PG in antifreeze
The difference between the above two substances in antifreeze is due to their toxicity and efficiency. Ethylene glycol shows high efficiency in heat transfer but propylene glycol has lower toxicity. In the following, we will further study these two substances and their application in antifreeze. what is glycol? Glycol is an organic chemical compound that belongs to the family of alcohols. In glycols (also called diols), the molecule contains two groups of hydroxyl attached to carbon atoms. These substances are classified as alcohols. The following figure shows the molecular structure of these two substances Note that ethylene glycol is available in three forms: monoethylene glycol, diethylene glycol and triethylene glycol. But monoethylene glycol is more widely used as an antifreeze among other types of ethylene glycols. Ethylene glycol propylene glycol Propylene glycol has heat transfer properties in the temperature range of -50 degrees Fahrenheit to 350 degrees Fahrenheit. Although both…