Element 47

Element 47 is a chemical catalyst.

History
Cisco Ramon tried to use element 47 to make the Flash suit bulletproof, but with no success. During the same experiment, he spills it on his shirt after being surprised by an meta-human alert on his phone. Later, in a dream, the element 47 protects Cisco from a bullet fired by Shawna Baez.

Behind the scenes

 * On the periodic table, element 47 is silver.