See Photos of Horrifying Orange Cloud After Chemical Explosion Near Barcelona

February 12, 2015 Updated: July 18, 2015

An orange toxic cloud was spotted over Spain following an explosion at a chemical plant, Reuters said.

Photos of the cloud were uploaded on social media websites. The blast at the chemical plant took place in Igualada, near Barcelona, according to the report.

So how was the cloud formed?

Preliminary reports say it was caused by two chemicals accidentally mixing together, and it is said to be composed primarily of nitric acid.

Nitric acid vapor can cause health problems if it is inhaled, swallowed, or if it comes into contact with the skin or eyes. Generally, it just irritates the eyes but higher doses can cause chemical burns.

About 65,000 residents were advised to stay indoors while the cloud dissipates.

Two people were injured in the chemical plant blast.

“Unfortunately, there’s not much wind in the area and the toxic cloud is taking longer to disperse,” Catalan Interior Ministry’s Ramon Espadelar was quoted by El Pais as saying.

(YouTube screenshot)
(YouTube screenshot)