Flammable
Appearance
Flammable materials are those that can easily catch on fire when leaked, such as fossil fuels or methane. Simple sparks, even ones from minor collisions, can be enough to start a fire when coming in contact with flammable materials. Fire can harm living organisms, spread and do massive damage to the environment.
See also: Asphyxiating, Oxidizing, HAZMAT Tier 2, HAZMAT Tier 3, HAZMAT Cargo