why is the bombardier beetle not harmed by the chemicals it stores
Bombardier beetle This reaction is very exothermic, and the released energy raises the temperature of the mixture to near 100 °C, vaporizing about a fifth of it. The resultant pressure buildup forces the entrance valves from the reactant storage chambers to close, thus protecting the beetle's internal organs. The boiling, foul-smelling liquid is expelled violently through an outlet valve, with a loud popping sound. The beetles' glands store enough hydroquinone and hydrogen peroxide to allow the beetle to release its chemical spray roughly 20 times. In some cases this is enough to kill a predator.[4] The main component of the beetle spray is 1,4-Benzoquinone, which is particularly irritating to the eyes and the respiratory system.
Chemical weapons in World War I The first killing agent used by the German military was chlorine.[10] Chlorine is a powerful irritant that can inflict damage to the eyes, nose, throat and lungs. At high concentrations and prolonged exposure it can cause death by asphyxiation.[11] German chemical companies BASF, Hoechst and Bayer (which formed the IG Farben conglomerate in 1925) had been making chlorine as a by-product of their dye manufacturing.[12] In cooperation with Fritz Haber of the Kaiser Wilhelm Institute for Chemistry in Berlin, they began developing methods of discharging chlorine gas against enemy trenches.[13][14]