Class 4.3 - Water-reactive Substances, which consists of substances that emit a flammable gas.

Class 4.3 International TDG placard : Water Reactive Substances

Class 4.3 International TDG placard : Water Reactive Substances
Class 4.3 TDG International Placard with blank UN box : Water Reactive Substances

Class 4.3 TDG International Placard with blank UN box : Water Reactive Substances
Class 4.3 International TDG placard preprinted with UN number : Water Reactive Substances

Class 4.3 International TDG placard preprinted with UN number : Water Reactive Substances