Do not leave a container of gasoline in direct sun, or in the trunk of a car that is in direct sun. Heating the gasoline will build up pressure in the container. Furthermore, the Code states that the quantity of gasoline stored in approved containers in private garages or other approved locations shall only be the amount necessary for maintenance purposes and operation of equipment and shall not exceed 10 gallons, unless it is stored in a storage cabinet designed for flammable liquids, in which case the limit is 30 gallons. General Safety Information about Gasoline Gasoline is dangerous. First, and foremost, it is extremely flammable.
Gasoline ignites easily and burns vigorously.
Gasoline vapor may explode. Second, exposure to gasoline liquid or vapor can adversely affect health. Extinguish cigarettes or other smoking materials. Shut off the engine when fueling a vehicle or transferring gasoline in the vicinity of a vehicle. Avoid breathing gasoline fumes.