Will spilled antifreeze dry naturally?
2 Answers
Antifreeze is primarily composed of ethylene glycol and water. Since the boiling point of ethylene glycol is close to 200°C under normal temperature conditions, its evaporation rate is relatively slow. It may take several days to completely dry when placed in a warm environment with direct sunlight. Additional information: Functions of antifreeze: 1. Antifreeze prevents the coolant from freezing and cracking the vehicle's cooling system when parked in cold winter conditions, while in summer it prevents "boiling over". 2. During operation, automobile engines generate substantial heat as fuel converts from chemical energy to mechanical energy. Gasoline engines have an efficiency of about 30%, with the remaining energy being converted into heat.
I often change the coolant myself, and once I accidentally spilled it all over the garage floor while refilling. Unlike water, coolant doesn't evaporate quickly—it contains ethylene glycol, which evaporates slowly and can take hours or even days to dry, depending on temperature and ventilation. The issue is that as it dries, it leaves behind a sticky residue that can corrode car paint, concrete floors, or tire surfaces. I remember checking the next day, and the floor had become sticky, making cleanup much more troublesome. My advice is to immediately soak up excess liquid with an old rag, then rinse with warm water mixed with dish soap to prevent long-term damage. Wearing gloves is also crucial because this stuff can slightly irritate the skin. Always keep absorbent pads handy when working with coolant to handle spills promptly.
