Hydrofluoric acid more than 60% strength

Hydrofluoric acid and sulphuric acid mixture

Hydrogen and methane mixture, compressed

Hydrogen bromide, anhydrous

Hydrogen chloride, anhydrous

Hydrogen chloride, refrigerated liquid

Hydrogen, compressed

Hydrogen cyanide, aqueous solution with not more than 20% hydrogen cyanide

Hydrogen cyanide, solution in alcohol with not more than 45% hydrogen cyanide

Hydrogen cyanide, stabilized containing less than 3% water

Hydrogen cyanide, stabilized containing less than 3% water and absorbed in a porous inert material

Hydrogendifluorides, solid, n.o.s.

Hydrogendifluorides, solid, n.o.s.

Hydrogendifluorides, solution, n.o.s.

Hydrogendifluorides, solution, n.o.s.

Hydrogen fluoride, anhydrous

Hydrogen in a metal hydride storage system

Hydrogen in a metal hydride storage system contained in equipment

Hydrogen in a metal hydride storage system packed with equipment

Hydrogen iodide, anhydrous