Bromine exists exclusively as Bromine salts in diffuse amounts in Crustal Rock.
Bromine salts have accumulated in sea water at 65 parts per million (ppm), which is less than chloride.
Bromine recovered from brine walls and dead sea waters.
It exists in the earth’s crust at an average concentration of 0.4 ppm. Volcanic soils can contain up to 500 ppm.
Bromine is a fuming red-brown liquid at room temperature, corrosive and toxic, and causes burns.
Organo bromine compounds useful as fire retardants.
It is one of only Two Elements on the periodic table that are known to be liquids at room temperature, mercury is the other, although Caesium, Gallium, & Rubidium melt just above room temperature.
Less reactive than Chlorine but more reactive than Iodine. Bromine reacts vigorously with metals, especially in the presence of water, to give bromide salts.
Ash of seaweed contains Bromine, like Iodine.
Bromine, like Chlorine, is used in maintenance of swimming pools.
