Platinum is a chemical element with symbol Pt and atomic number 78. It is dense, malleable, ductile, highly unreactive, precious, gray-white transition metal.
P 5043 (OTTO) Platinum sputtering target, diam. × thickness 2 in. × 2 mm, 99.99% Cas 7440-06-4 - used to make weights and measures standards, electronics industry for electrical contacts, and it is used to manufacture electrodes, manufacture jewelry and also used as catalyst.