The volatile nature of gasoline means that certain procedures for handling and transporting gasoline should be followed to ensure the safety of people near and in surrounding buildings. Gasoline can cause fires and illnesses associated with inhalation. Wherever there is gasoline, there is a potential danger. However, you can reduce the risk by being careful and taking the necessary precautions when filling gasoline containers.
Steps
Part 1 of 2: filling a canister with gasoline safely

Step 1. Do not smoke near a gas station or canister

Step 2. Turn off your vehicle's engine

Step 3. Make sure your container is properly designed to carry gasoline
Jerrycans designed for gasoline are red and are labeled as approved on the packaging.

Step 4. Discharge static electricity
Static electricity can build up and create a spark, possibly causing an explosion near gasoline vapors. When getting out of the vehicle, discharge your body's static electricity accumulated during the journey by touching a metal part of the car, if possible the door.

Step 5. Take your canister out of your car before filling it
Never fill it with gasoline until you take it out of your car or trunk. The jerry can must be earthed to empty it of its electric charge. Carpet and trunk linings can affect the flow of static electricity.

Step 6. Place it on the floor
This must be well away from cars (in traffic or parked) and people.

Step 7. Touch the side of the canister with the tip of the gasoline gun
Never touch the rim of the canister first. If there is a spark, it should not be created near the orifice where it could ignite the vapors in the canister.

Step 8. Slowly fill the canister to prevent spilling or overflowing
Do not lock the fuel gun lever. Be careful and manually pull the trigger.

Step 9. Do not fill the jerry can to the neck
Leave a few inches to make room for gasoline vapors created by temperature changes. This will also prevent you from overflowing.

Step 10. Tighten the cap securely

Step 11. Wipe down the exterior of the canister before returning it to the vehicle
If you don't have a cloth, look for the paper towel dispensers that stations usually provide for cleaning.
Part 2 of 2: transporting a gasoline canister safely

Step 1. Be careful to prevent the risk of splashing into the vehicle
The cap should be tight and the canister should be upright. Tie it up so it cannot move.

Step 2. Don't leave it in your vehicle for too long
Make sure you don't close all windows. Open these to ventilate the passenger compartment well. Do not leave a gasoline container in the trunk or passenger compartment of a vehicle.

Step 3. Keep away from any risk of sparks and heat sources
It also includes the sun's rays.

Step 4. Protect children and other loved ones from gasoline fumes
You should not place a gasoline can behind the seats. Attach them as far away from people's faces as possible. Children should never stay in a closed vehicle that contains a gasoline container.