The third pictograms depicts an exploding bomb and appears on products explosive it can also be found on labels for self reactive products.
and for organic peroxides be compressed gas cylinder will appear on labels cylinders of compressed gas under pressure care must be taken when handling the cylinders because in the right conditions. A broken regulator or valve can cause the cylinder to become a projectile also when a compressed gas leaks into an enclosed space such as through leaking hose or crack pal the gas can fill up the space and cause an oxygen deficient atmosphere and some gases or liquefied so they can be placed inside a cylinder. Summer these gases rapidly expanding call. When release from the cylinder and can even cause frostbite injuries. If the gas makes contact with any part of your body.