A white gas can typically refers to a container used for storing or transporting gasoline. White is a common color for gas cans, as it is a neutral and easily identifiable color. Gas cans are often made of high-density polyethylene (HDPE) plastic and are designed to be durable and leak-proof. Some gas cans may also feature a spout and vent for easy pouring and airflow. It's important to handle gasoline and other fuels with caution and to store them in a cool, dry place away from heat sources and ignition sources.