Germanium is a chemical element with symbol Ge and atomic number 32. It is a lustrous, hard, grayish-white metalloid in the carbon group, chemically similar to its group neighbors tin and silicon.
G 3512 (OTTOKEMI) Germanium powder, -200 mesh approx, 99.99% Cas 7440-56-4 - used for polymerization catalysts and have most recently found use in the production of nanowires.