What Was the Biggest Explosion Before the Atomic Bomb? — The History of Picric Acid

Subscribe to ‪@VEINMaterial‬ 🧱 If this documentary was worth your time, consider buying me a coffee. Every coffee goes directly toward researching, writing, and producing the next story, so I can keep making documentaries like this. Thanks for watching, and for supporting independent storytelling. https://buymeacoffee.com/VEIN.Material This video tells the history of picric acid — the forgotten explosive behind the 1917 Halifax Explosion, once called the largest man-made blast before the atomic bomb. Picric acid went from a yellow dye and burn-wound antiseptic to the explosive that filled shells for nearly every major navy on earth, before an unstable chemical flaw quietly turned it into one of the most dangerous substances in modern history. The video traces its path from the battle of Tsushima to the docks of Halifax, Nova Scotia, and finally to present-day school chemistry cupboards, where old bottles of it still trigger bomb-disposal callouts. What's covered in this video: How picric acid got its name from the Greek word "pikros" (bitter) and was first used as a yellow dye and later as an antiseptic burn dressing in WWI field hospitals. Why picric acid became the dominant military explosive of the 1880s-1900s, known as lyddite in Britain, melinite in France, ecrasite in Austria-Hungary, and shimose powder in Japan (developed by Masachika Shimose). How shimose-filled shells helped the Japanese fleet under Admiral Tōgō devastate the Russian Baltic Fleet at the Battle of Tsushima in 1905. Why every navy eventually abandoned picric acid in favor of TNT after it formed unstable picrate salts in shell casings, causing mysterious magazine explosions. How the French cargo ship Mont-Blanc, loaded with roughly 2,300 tons of picric acid, TNT, guncotton, and benzol, collided with the Norwegian ship Imo in Halifax harbour on December 6, 1917. The story of train dispatcher Vince Coleman, who stayed at his telegraph post to warn an incoming passenger train before the Mont-Blanc detonated. The scale of the Halifax Explosion's destruction, including the devastation of Dartmouth and the Mi'kmaq community at Turtle Grove, and the thousands of eye injuries caused by people watching from windows. The aftermath, including advances in Canadian ophthalmology, the Judicial Committee of the Privy Council's ruling on shared blame, the rebuilding of the Hydrostone neighborhood, and Nova Scotia's annual Christmas tree gift to Boston. Why picric acid bottles found forgotten in old school and university chemistry cupboards still lead to evacuations and controlled bomb-disposal detonations today. ▶️ Watch Next: Why Is TNT So Hard to Explode? — The History of TNT Why Is TNT So Hard to Explode? — The Histo... Why Does Fertilizer Keep Exploding? — The History of Ammonium Nitrate Why Does Fertilizer Keep Exploding? — The ... The Explosive That Terrified the Man Who Made It | The History of Nitroglycerin The Explosive That Terrified the Man Who M... Mentioned in this video: picric acid, Halifax Explosion, Mont-Blanc, Imo, Halifax Nova Scotia, Vince Coleman, Richmond yards, Dartmouth, Turtle Grove, Mi'kmaq, Admiral Tōgō, Masachika Shimose, Battle of Tsushima, Russian Baltic Fleet, Japanese Imperial Navy, lyddite, melinite, ecrasite, shimose powder, TNT, Halifax Relief Commission, Hydrostone, Judicial Committee of the Privy Council, Boston, Beirut ammonium nitrate explosion, First World War