Will Alcohol Left in a Car Spontaneously Combust?

1 Answers
EliasFitz
07/29/25 11:02am
Alcohol left inside a car can spontaneously combust. Taking commonly used 75% medical alcohol as an example, its ignition point is 20°C. During summer, midday outdoor temperatures can exceed 40°C, and when a vehicle is parked outside under direct sunlight, the interior temperature can rise above 50°C, significantly increasing the risk of alcohol combustion or explosion. Additional Information: 1. It is advisable to avoid storing alcohol in vehicles. If disinfection is necessary, find an open area to wipe the car interior with alcohol while ensuring proper ventilation afterward. 2. Besides disinfectant alcohol, perfumes containing alcohol can also combust when reaching certain temperatures. Therefore, flammable or explosive items should not be stored in cars.
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