Flammability
Flammability or inflammability means that something can be set on fire easily. It will burn easily. The words come from Latin. The word at the base is in-flammare (late Latin). It means something like "to put fire to a thing".
Inflammable and flammable are used to mean the same thing. People sometimes get confused and think that inflammable means "not flammable" because the prefix in is often used to mean not. For example, something that is inhuman is not human. Since many people do not know that inflammable means "burns easily", flammable is used more often in public places as a warning.
Flammability can be tested. Paper, for example, is more flammable than wood, and less flammable than natural gas.
Flammability Media
The international pictogram for flammable chemicals
DIN4102 flammability class B1 vertical shaft furnace at Technische Universität Braunschweig, Germany
Sample holder for DIN4102 flammability class B1 vertical shaft furnace
Test apparatus for determining combustibility at Technische Universität Braunschweig
DIN4102 A1 noncombustible rockwool
DIN4102 A2 gypsum fireproofing plaster leavened with polystyrene beads
DIN 4102 B2: Timber, normal combustibility
DIN 4102 B3: Polyurethane foam (easy to ignite = many hydrocarbon bonds usually)
