File:OPCW-20151029-Barrel-bomb-graph.jpg

Depiction of a chemical barrel bomb (Source: OPCW)


 * Source
 * Investigation of alleged chlorine attacks in the Idlib Governorate (Syria) in March – May 2015 - JP Zanders, The Trench November 16, 2015
 * ''First depiction of a chemical barrel bomb dropped from helicopters
 * ''The report also included a depiction of a so-called barrel bomb, based on the various testimonials and collection of bomb fragments. It notes that the design of the improvised weapon underwent an evolution of their manufacture, probably driven by trial and error. However, only a singly type appears to have been used in the Idlib Governorate between March and May 2015.
 * ''The configuration consists of 9 gas cylinders (green) presumably filled with poisonous chemicals. The report suggests that they may have been filled with a chlorine or chloride containing compound. The flasks with potassium permanganate (pink) would then have been used to oxidise the chlorine containing compound, resulting in Cl2. The potassium permanganate may be responsible for the purple–red colour occasionally seen in pictures and video footage of impact sites.