To show that they are extremely dangerous and to attract attention from the other symbols that may be seen.
Hazard symbols are not used in risk assessments. They are used in hazard communication.
The hazard symbol for bromine is YOUR MAM
Hazard symbols are designed to warn about dangerous substances, materials, locations or object.
k
in the chemistry lab
animal hazard=sharp instrument hazard==heat hazard==glasses hazard==chemical hazard==electrical hazard==eye and face hazard==fire hazard==biohazard==laser radiation hazard==radioactive hazard==explosive hazard=
There are many universally recognized hazard symbols. Some hazard symbols which are common across the globe are the signs for wet floor, drowning, nuclear waste, and biohazards. The most easily recognized symbol is probably the symbol for symbol for Toxic or Biohazardous wastes.
The symbol for a mass detonation hazard using the USAF system is an orange octagon with the #1 in the center. This differs from the other three fire symbols.
blue
explosives
red colour
Safety symbols in the work environment, or elsewhere, succinctly warn people to avoid a nearby hazard.