The Molotov is a throwable item that creates a ring of fire around that area it landed. It deals about a quarter of your damage a second and can be deadly if you do not escape it.
Tactics
Molotovs are often used outside and can be useful to wipe out or lower the health of multiple targets. Using a molotov in the grass can be good to eliminate a player hiding in such an area.They can also be useful to try to get a player or squad out of an area and pick them up as they run out.