An ammonium nitrate explosion produces massive amounts of nitrogen oxides. Nitrogen dioxide (NO₂) is a red, bad-smelling gas. Images from Beirut reveal a distinct reddish colour to the plume of ...

Many chemists on Twitter identified that color as being a signature of NO 2 gas, possibly produced from the incomplete decomposition of ammonium nitrate. Others also used the video footage to ...

The chemical, ammonium nitrate, is relatively harmless by itself but has caused deadly explosions in industrial accidents and has been used in targeted attacks. By Amanda Holpuch and Joshua ...

About 30 tons of ammonium nitrate disappeared from a rail car on a train traveling to California in April. The chemical compound is used in fertilizers and explosives and can be dangerous to store.