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H331 — Toxic if inhaled

Hazard class: Acute toxicity, inhalation · Category 3

128 substances with this hazard classification

What does H331 mean?

Inhaling the substance or mixture can cause toxic effects.

Safety Guidance

Use only outdoors or in a well-ventilated area. Wear respiratory protection. If inhaled, remove person to fresh air.

Substances with H331

SubstanceCAS NumberSignal Word
1,1,1,2,3,3,3-heptafluoro-2-iodopropane 677-69-0 Danger
1,1,1,2-tetrachloroethane 630-20-6 Warning
1,1,1,3,3,3-hexamethyldisilazane 999-97-3 Danger
1,1,1,4,4,4-hexafluorobut-2-yne 692-50-2 Danger
1,1,2,2-tetrabromoethane 79-27-6 Danger
1,1,2,2-tetrachloroethane 79-34-5 Danger
1,1,2,3,4,4-hexafluorobuta-1,3-diene 685-63-2 Danger
1,1,2-trichloro-3,3,3-trifluoropropene 431-52-7 Danger
1,1,2-trichloroethane 79-00-5 Warning
1,1,2-trichloropropane 598-77-6 Danger
1,1,3,3,3-pentafluoropropene 690-27-7 Danger
1,1,3,3-tetramethylbutyl hydroperoxide 5809-08-5 Danger
1-(1,4-benzodioxan-2-ylcarbonyl)piperazine hydrochloride 70918-74-0 Danger
1,1-dibromoethane 557-91-5 Danger
1,1-dichloro-1-nitroethane 594-72-9 Danger
1,1-dichloro-3,3-dimethylbutan-2-one 22591-21-5 Danger
1,1-dichloroethylene 75-35-4 Danger
1,1'-(dichlorovinylidene)bis[chlorobenzene] 68679-99-2 Danger
1,1-dicyanoethyl acetate 7790-01-4 Danger
1,1-dimethyl-2-selenourea 5117-16-8 Danger
1,1-dimethylhydrazine monohydrochloride 593-82-8 Danger
1,1'-tellurobisethane 627-54-3 Danger
1,2,3,4,5,6-hexachloro-7-methoxynaphthalene 1506-15-6 Danger
1,2,3,6-tetrahydromethyl-3,6-methanophthalic anhydride 25134-21-8 Warning
1,2,3-trichloropropane 96-18-4 Danger
1,2,3-trichloropropene 96-19-5 Danger
1-(2-chloroethoxy)propane 42149-74-6 Danger
1,2-dibromo-[1,1,2,2-2H4]ethane 22581-63-1 Danger
1,2-dichloro-3-isocyanatobenzene 41195-90-8 Danger
1,2-dichlorobenzene 95-50-1 Warning
1,2-dichloroethane 107-06-2 Danger
(1,2-dichloroethyl)benzene 1074-11-9 Danger
1,2-dichlorohexafluorocyclopentene 706-79-6 Danger
1,2-dichloropropane 78-87-5 Danger
1,2-dimethylhydrazine dihydrochloride 306-37-6 Danger
1,2-epoxy-3-fluoropropane 503-09-3 Danger
1,2-epoxybutane 106-88-7 Danger
1,2-epoxycyclohexane 286-20-4 Danger
1,3,3-trimethyl-2-[[methyl(p-tolyl)hydrazono]methyl]-3H-indo... 68134-38-3 Danger
(±)-1-[(3,4-dimethoxyphenyl)methyl]-1,2,3,4-tetrahydro-6,7-d... 1699-51-0 Danger
1,3,5-triazine-2,4,6(1H,3H,5H)-trione, compound with hydrazi... 18836-29-8 Danger
1,3,5-trichloro-2-nitrobenzene 18708-70-8 Danger
1,3,5-tris[(2S and 2R)-2,3-epoxypropyl]-1,3,5-triazine-2,4,6... 59653-74-6 Danger
1,3,5-tris[3-(trimethoxysilyl)propyl]-1,3,5-triazine-2,4,6(1... 26115-70-8 Danger
1,3,5-tris(oxiranylmethyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-tr... 2451-62-9 Danger
1,3-bis(isocyanatomethyl)benzene 3634-83-1 Danger
1,3-dichloro-2-isocyanatobenzene 39920-37-1 Danger
1,3-dichloro-5-ethyl-5-methylimidazolidine-2,4-dione 89415-87-2 Danger
1,3-dichloro-5-isocyanatobenzene 34893-92-0 Danger
1,3-dichlorobenzene 541-73-1 Warning