Powdered chlorine forms with a seperate glass container of an acid like sulfuric or hydrochloric acid could make a binary chemical weapon similiar to a chemical weapons molotov cocktail. It could or could not be lethal enough tossed at a military tank to kill the crew. But could be good at killing some soldiers. I have read the Anarchist Cookbook has inaccurate formulas that lead to wrong chemicals being synthesized. I don't know if that is true or trolling or something.