Is it safe to keep a gas cylinder in the car during summer?

[DiMadison]

No, gas cylinders are hazardous materials. Here are the relevant details: Reason: The temperature inside a car trunk can become very high during summer, which can easily cause the cylinder to explode due to the heat. Therefore, gas cylinders should not be stored in car trunks. Any vehicle transporting hazardous materials must possess a transportation permit issued by the chemical and hazardous materials department, and drivers must undergo proper training. Additionally, a certified escort must accompany the transport. Illegal storage of gas cylinders can be reported to public security authorities or fire control management departments. Criminal law provisions: Article 125 of the Criminal Law: Illegal manufacturing, trading, transporting, mailing, or storing of firearms, ammunition, or explosives is punishable by imprisonment of three to ten years; in severe cases, the punishment can range from ten years to life imprisonment or even the death penalty.

[MaciAnn]

Storing a gas cylinder in a car during summer is extremely unsafe. I’ve personally witnessed an accident—last year, a friend forgot a cylinder in the trunk, and after parking under the scorching sun for a few hours, the internal pressure surged, causing a minor explosion that shattered the windows. Fortunately, no one was hurt. Car temperatures can skyrocket in summer, easily exceeding 60°C, far beyond the safe temperature limit for gas cylinders. High heat weakens material strength and causes gas expansion or leakage, which, if exposed to static electricity or other ignition sources, can easily trigger a fire or explosion. If you must transport one, remember to remove it immediately after short-distance movement and store it in a cool place, like a garage corner, for added safety. The key is to regularly inspect the cylinder for any cracks or signs of aging to eliminate potential hazards.

[SanElle]

As someone who has long been concerned about family safety, I strongly oppose leaving gas cylinders in the car during summer. The scorching heat inside a car turns it into a sweltering steamer, and the high pressure can cause gas cylinders to deform or valves to fail, leading to toxic gas leaks. If children or pets get into the car and inhale those gases, it can be extremely dangerous, potentially causing suffocation or fainting. I recommend transporting gas cylinders in the early morning or evening to avoid direct sunlight, and limiting their time inside the car to under 10 minutes. For storage, choose a well-ventilated and shaded area, such as under a tree or in a shed, keeping the cylinders dry and clean. Simply put, a car is not a storage space—for safety's sake, make it a habit to remove them promptly.

[JulianLynn]

From a scientific perspective, high summer temperatures make gas cylinders extremely dangerous. The rapid temperature rise inside a vehicle causes gas volume expansion and increased internal pressure, which may exceed the cylinder's strength limit, leading to rupture or explosion. Additionally, metal materials soften under heat, potentially causing valve seal failure and leakage. If leaked gas encounters air and an ignition source, it can combust. The safety threshold is around 50°C, while summer car interiors can easily exceed 60°C. Gas cylinders must not be exposed to heat sources, including car trunks, and should be stored in cool, ventilated areas. Ignoring this poses extreme risks.

[DeKingston]

Having driven for many years, I'm well aware of the hazards of keeping gas cylinders in cars during summer. Under high temperatures, the internal pressure of cylinders fluctuates significantly, making them prone to leaks or ruptures. In case of leakage encountering sparks, it could lead to explosive combustion with unimaginable consequences. Last year, an accident occurred in my neighborhood where a cylinder left in the back seat emitted black smoke after being exposed to sunlight, requiring fire brigade intervention. Car temperatures rise rapidly in hot weather, making stored cylinders equivalent to ticking time bombs. The safe practice is to promptly remove them after transportation, storing them in cool garages or shaded corners—never cut corners for convenience. Develop this habit to prevent disasters before they happen.

[VanHaven]

As someone who thinks from a preventive perspective, I must emphasize the importance of caution when storing gas cylinders in summer—your car is definitely not a suitable place. High temperatures can cause the gas inside the cylinder to expand, increasing the risk of leakage. If a leak occurs, it could not only damage the vehicle but also endanger pedestrians. The ideal solution is to store them in a cool, well-ventilated outdoor area, such as under a shed, or to dispose of them immediately after short-term transport. Always inspect the cylinder's condition to ensure there is no rust or wear, and avoid prolonged exposure to heat sources. Safety comes first—don’t risk fires or health hazards for minor conveniences. Develop a habit of regularly checking and managing your cylinders to protect yourself and your community.