Tin is a chemical element with the symbol Sn (from Latin stannum) and atomic number 50. A silvery-coloured metal, tin is soft enough to be cut with little force, and a bar of tin can be bent by hand with little effort.
T 7707 (OTTO) Tin ingots, 99.9%+ Cas 7440-31-5 - used as a protective coat for other metals, a protective oxide (passivation) layer prevents further oxidation.