Index of Hazardous Materials

CAS/UN/NA-NumberNameHazard Class
UN 2545Hafnium powder, dry4.2
UN 1326Hafnium powder, wetted with not less than 25 percent 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 microns4.1
Hand signal device, see Signal devices, hand
Hazardous substances, liquid or solid, n.o.s., see Environmentally hazardous substances, etc
NA 3082Hazardous waste, liquid, n.o.s.9
NA 3077Hazardous waste, solid, n.o.s.9
UN 1202
CAS 68476-30-2
Heating oil, light3
UN 1046
CAS 7440-59-7
Helium, compressed2.2
UN 1963Helium, refrigerated liquid (cryogenic liquid)2.2
UN 3296Heptafluoropropane or Refrigerant gas R 2272.2
UN 1206
CAS 142-82-5
Heptanes3
UN 2661
CAS 116-16-5
Hexachloroacetone6.1
UN 2729
CAS 118-74-1
Hexachlorobenzene6.1
UN 2279
CAS 87-68-3
Hexachlorobutadiene6.1
UN 2646
CAS 77-47-4
Hexachlorocyclopentadiene6.1
UN 2875
CAS 70-30-4
Hexachlorophene6.1
UN 1781
CAS 5894-60-0
Hexadecyltrichlorosilane8
UN 2458Hexadienes3
UN 1612Hexaethyl tetraphosphate and compressed gas mixtures2.3
UN 1611Hexaethyl tetraphosphate, liquid6.1
UN 1611Hexaethyl tetraphosphate, solid6.1
UN 2420Hexafluoroacetone2.3
UN 2552Hexafluoroacetone hydrate, liquid6.1
UN 3436Hexafluoroacetone hydrate, solid6.1
UN 2193
CAS 76-16-4
Hexafluoroethane, or Refrigerant gas R 1162.2
UN 1782
CAS 16940-81-1
Hexafluorophosphoric acid8
UN 1858Hexafluoropropylene compressed or Refrigerant gas R 12162.2
UN 1207
CAS 66-25-1
Hexaldehyde3
UN 2281
CAS 822-06-0
Hexamethylene diisocyanate6.1
Hexamethylene triperoxide diamine (dry)Forbidden
UN 1783Hexamethylenediamine solution8
UN 2280
CAS 124-09-4
Hexamethylenediamine, solid8
UN 2493
CAS 111-49-9
Hexamethyleneimine3
UN 1328
CAS 100-97-0
Hexamethylenetetramine4.1
Hexamethylol benzene hexanitrateForbidden
UN 1208Hexanes3
Hexanitroazoxy benzeneForbidden
Hexanitrodiphenyl ureaForbidden
UN 0079
CAS 131-73-7
Hexanitrodiphenylamine or Dipicrylamine or Hexyl1.1D
HexanitroethaneForbidden
HexanitrooxanilideForbidden
UN 0392Hexanitrostilbene1.1D
Hexanoic acid, see Corrosive liquids, n.o.s.
UN 2282
CAS 111-27-3
Hexanols3
Hexogen and cyclotetramethylenetetranitramine mixtures, wetted or desensitized see RDX and HMX mixtures, wetted or desensitized etc
Hexogen and HMX mixtures, wetted or desensitized see RDX and HMX mixtures, wetted or desensitized etc
Hexogen and octogen mixtures, wetted or desensitized see RDX and HMX mixtures, wetted or desensitized etc
Hexogen, see Cyclotrimethylenetrinitramine, etc
UN 0118Hexolite, or Hexotol dry or wetted with less than 15 percent water, by mass1.1D
UN 0393Hexotonal1.1D
Hexyl, see Hexanitrodiphenylamine
UN 1784
CAS 928-65-4
Hexyltrichlorosilane8
High explosives, see individual explosives’ entries
HMX, see Cyclotetramethylenete tranitramine, etc
UN 3484Hydrazine aqueous solution, flammable with more than 37% hydrazine, by mass8
UN 2030Hydrazine aqueous solution, with more than 37% hydrazine, by mass8
Hydrazine azideForbidden
Hydrazine chlorateForbidden
Hydrazine dicarbonic acid diazideForbidden
Hydrazine perchlorateForbidden
Hydrazine selenateForbidden
UN 2029
CAS 302-01-2
Hydrazine, anhydrous8
UN 3293Hydrazine, aqueous solution, with not more than 37 percent hydrazine, by mass6.1
UN 1787
CAS 10034-85-2
Hydriodic acid8
Hydriodic acid, anhydrous, see Hydrogen iodide, anhydrous
Hydrobromic acid, anhydrous, see Hydrogen bromide, anhydrous
UN 1788Hydrobromic acid, with more than 49 percent hydrobromic acid8
UN 1788Hydrobromic acid, with not more than 49 percent hydrobromic acid8
UN 1964Hydrocarbon gas mixture, compressed, n.o.s.2.1
UN 1965Hydrocarbon gas mixture, liquefied, n.o.s.2.1
UN 3295Hydrocarbons, liquid, n.o.s.3
UN 1789
CAS 7647-01-0
Hydrochloric acid8
Hydrochloric acid, anhydrous, see Hydrogen chloride, anhydrous
Hydrocyanic acid (prussic), unstabilizedForbidden
Hydrocyanic acid, anhydrous, see Hydrogen cyanide etc
UN 1613
CAS 74-90-8
Hydrocyanic acid, aqueous solutions or Hydrogen cyanide, aqueous solutions with not more than 20 percent hydrogen cyanide6.1
NA 1613Hydrocyanic acid, aqueous solutions with less than 5 percent hydrogen cyanide6.1
Hydrocyanic acid, liquefied, see Hydrogen cyanide, etc
UN 1786
CAS 7664-93-9
Hydrofluoric acid and Sulfuric acid mixtures8
Hydrofluoric acid, anhydrous, see Hydrogen fluoride, anhydrous
UN 1790
CAS 7664-39-3
Hydrofluoric acid, with more than 60 percent strength8
UN 1790
CAS 7664-39-3
Hydrofluoric acid, with not more than 60 percent strength8
Hydrofluoroboric acid, see Fluoroboric acid
Hydrofluorosilicic acid, see Fluorosilicic acid
UN 2034Hydrogen and Methane mixtures, compressed2.1
UN 1048Hydrogen bromide, anhydrous2.3
UN 1050Hydrogen chloride, anhydrous2.3
UN 2186Hydrogen chloride, refrigerated liquid2.3
UN 3294Hydrogen cyanide, solution in alcohol with not more than 45 percent hydrogen cyanide6.1
UN 1051Hydrogen cyanide, stabilized with less than 3 percent water6.1
UN 1614Hydrogen cyanide, stabilized, with less than 3 percent water and absorbed in a porous inert material6.1
UN 1052Hydrogen fluoride, anhydrous8
UN 3468Hydrogen in a metal hydride storage system or Hydrogen in a metal hydride storage system contained in equipment or Hydrogen in a metal hydride storage system packed with equipment2.1
Hydrogen iodide solution, see Hydriodic acid
UN 2197Hydrogen iodide, anhydrous2.3
UN 3149Hydrogen peroxide and peroxyacetic acid mixtures, stabilized with acids, water, and not more than 5 percent peroxyacetic acid5.1
UN 2014
CAS 7722-84-1
Hydrogen peroxide, aqueous solutions with not less than 20 percent but not more than 40 percent hydrogen peroxide (stabilized as necessary)5.1
UN 2015Hydrogen peroxide, stabilized or Hydrogen peroxide aqueous solutions, stabilized with more than 60 percent hydrogen peroxide5.1
UN 3526Hydrogen selenide, adsorbed2.3
UN 2202
CAS 7783-07-5
Hydrogen selenide, anhydrous2.3
Hydrogen sulfate, see Sulfuric acid
UN 1053
CAS 7783-06-4
Hydrogen sulfide2.3
UN 1049
CAS 1333-74-0
Hydrogen, compressed2.1
UN 2014
CAS 7722-84-1
Hydrogen, peroxide, aqueous solutions with more than 40 percent but not more than 60 percent hydrogen peroxide (stabilized as necessary)5.1
UN 2984Hydrogen, peroxide, aqueous solutions with not less than 8 percent but less than 20 percent hydrogen peroxide (stabilized as necessary)5.1
UN 1966Hydrogen, refrigerated liquid (cryogenic liquid)2.1
UN 3471Hydrogendifluoride solution, n.o.s8
UN 1740Hydrogendifluoride, solid, n.o.s8
Hydrosilicofluoric acid, see Fluorosilicic acid
Hydroxyl amine iodideForbidden
UN 2865Hydroxylamine sulfate8
UN 1791
CAS 7681-52-9
Hypochlorite solutions8
UN 3212Hypochlorites, inorganic, n.o.s5.1
Hyponitrous acidForbidden