Einsteinium(III) bromide (einsteinium tribromide) is the binary bromide salt of einsteinium. It has a monoclinic crystal structure and is used to create einsteinium(II) bromide. This compound slowly decays to californium(III) bromide. via alpha decay.
Einsteinium tribromide is a light-brown crystalline solid compound of einsteinium, <chem>EsBr3</chem>.
Einsteinium tribromide was discovered with small amounts of Einsteinium from the Ivy mike test in 1952. Analysis of the fallout confirmed the presence of elements 99 and 100, which the researchers named einsteinium and fermium. Einsteinium originally received the chemical letter <chem>E</chem>, which was later changed to <chem>Es</chem>. Researchers made einsteinium tribromide from hydrobromic acid and related halides like the chloride salt.
Einsteinium tribromide was first made with hydrobromic acid and einsteinium trioxide, via:
Einsteinium is a potent alpha particle emitter and can cause various cancers.