Bismuth is a chemical element with symbol Bi and atomic number 83. Bismuth, a pentavalent post-transition metal, chemically resembles arsenic and antimony
B 1828 (OTTO) Bismuth, ingots, 99.999% - used in metal alloys with other metals such as iron, to create alloys to go into automatic sprinkler systems for fires. Also used to make bismuth bronze which was used in the Bronze Age.