Iron filings are very small pieces of iron that look like a light powder. They are very often used in science demonstrations to show the direction of a magnetic field. Since iron is a ferromagnetic material, a magnetic field induces each particle to become a tiny bar magnet.

Application

I 1495 (OTTO) Iron, fillings, 100 mesh, 99% Cas 7439-89-6 - used at the active site of many important redox enzymes.