chemical element: Sb
( mixture of powder & chunks )
Very High purity (99.99%) Antimony metal (atomic number 51) in
powder form. Antimony has a melting point of 1167 F and has the unusual property of expanding when cooling. 'Hardened Lead' is made by adding small amounts of Antimony metal to molten Lead. Antimony metal powder is also used in some specialized pyrotechnic formulations to produce unusual effects. Under the proper conditions, it burns quite brilliantly when heated producing Antimony Trioxide.
Caution: Antimony Metal is toxic. Use normal safety precautions (wear a filter
mask/respirator and gloves) when working with Antimony Metal. Accidental
inhalation of fine particles can be dangerous.