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Gunpowder, compressed

Hafnium powder, dry

Hafnium powder, dry

Hafnium powder, dry

Hafnium powder, wetted with not less than 25% water (a visible excess of water must be present) (a) mechanically produced: particle size less than 53 microns; (b) chemically produced: particle size less than 840 microns

Halogenated monomethyldiphenylmethanes, liquid

Halogenated monomethyldiphenylmethanes, solid

Hay

Heating oil, light

Helium, compressed

Helium, refrigerated liquid

Heptafluoropropane

n-Heptaldehyde

Heptanes

n-Heptene

Hexachloroacetone

Hexachlorobenzene

Hexachlorobutadiene

Hexachlorocyclopentadiene

Hexachlorophene