box of bismuth chunks 99.99% about 8 pounds pure by rotometals roto metals sold by the box. this is several chunks of rotometals 99.99% bismuth that is broken off of a larger ingot. you will get approximately 8 pounds total. physical information atomic number - 83 relative atomic mass (12c=12.000) - 208.98 melting point - 520f boiling point - 2642f density - 9.80 weight lb/in3 - 0.3541 bi 99.99% by rotometals an online company