Sodium cyanide exists in conditions that are usually in the form of white crystalline or small granules, easily fatal if inhaled or swallowed.
The Chinese Seismic Bureau (NEB) pointed out that the first explosion is equivalent to 3 tons of TNT, the second blast has the same power as 21 tons of TNT.
Human history has recorded extremely horrific explosions in both its strength and its consequences. The explosion in Tianjin, China last though terrible but not the most feared.
Images shot by unmanned aircraft show the destruction of an explosion at a warehouse in Tianjin, northern China, causing at least 50 people to die.
Tianhe 1, China's fastest supercomputer in 2010, was forced to shut down for safety reasons, following the impact of the terrifying explosion on Wednesday night in Tianjin.