hazardous hazmat material label iata transportation subclass 5.1: oxidizing agent

able agent air annenergy any are atoms been bivalent cause class combustible combustion coming compound considered contact containing death derivative division five flammable gas have hazard hazardous hazmat health humans hydrogen iata ignite label liable liquid material may means minutes more one organic oxidizing oxygen peroxide pyrophoric radicals replaced selfheat selfheating serious solid spontaneous spontaneously structure subclass substances supply that thatncan toxic transportation when where which