In air, cyanide is especially found as gaseous hydrogen cyanide; a little amount is present as fine dust particles. Very first found in 1786 by Scheele, who extracted it from the dye Prussian blue – and instantly died from exposure for the vapours • Fast DRENCH - Services for immediately https://potassium-cyanide-solutio60370.ampedpages.com/5-simple-statements-about-potassium-cyanide-vs-potassium-thiocyanate-explained-56929335