(Chemical Symbol Zn.) – Element No. 30 of the periodic system; atomic weight 65.38. Blue-white metal; when pure, malleable and ductile even at ordinary temperatures; melting point 787° F., boiling point 1665° F., specific gravity 7.14. Can be electrodeposited; it is extensively used as a coating for steel (see Galvanizing) and sheet zinc finds many outlets, such as dry batteries, etc. Zinc-base alloys are of great importance in die casting. Its most important alloy is brass.