Catalyst of the Week

Iridium 

Iridium is the chemical element.. Symbol Ir and atomic number 77.
It's hard, brittle, silvery-white transition metal of the platinum family, iridium is the second-densest element and is the most corrosion-resistant metal.

It is primary used as a Harding agent for platinum. A thin layer of Iridium exist in the earth's crust, but higher concentration exist in meteors and asteroids. This proves that during the earth creation meteors and asteroids were used.

Iridium is highly flammable. If you get in your eyes it will cause irritation and if digested will cause digestion problems.