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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
1,3-dichlorobut-2-ene 926-57-8 Danger
1,3-dichloropropene 542-75-6 Danger
1,3-diisopropyl-2-(p-nitrobenzyl)isourea 2978-11-2 Danger
1,3-diisopropyl-2-thiourea 2986-17-6 Danger
1,3-propanediamine dihydrochloride 10517-44-9 Danger
1,4,5,6-tetrahydro-1-methyl-2-[2-(2-thienyl)vinyl]pyrimidine... 17076-90-3 Danger
1,4,5-trideoxy-1,4-imino-5-(p-methoxyphenyl)-D-xylo-pentitol... 22862-76-6 Danger
1,4-bis(trichloromethyl)benzene 68-36-0 Danger
1,4-diisocyanatocyclohexane 2556-36-7 Warning
1,4-dioxane 123-91-1 Danger
1-(4-methoxyphenyl)thiourea 2293-07-4 Danger
1-(4-methylphenyl)ethylamine 586-70-9 Danger
1,5-anhydro-2-deoxy-D-lyxo-hex-1-enitol 21193-75-9 Warning
1,5-difluoro-2,4-dinitrobenzene 327-92-4 Danger
1,7-dihydro-6H-purine-6-selone 5270-30-4 Danger
1-(bromomethyl)-3-phenoxybenzene 51632-16-7 Danger
(1E,5E,9Z)-cyclododeca-1,5,9-triene 706-31-0 Danger
1-(N,N-dimethylcarbamoyl)-3-tert-butyl-5-carbethoxymethylthi... 110895-43-7 Danger
(1R,12R)-9-methoxy-4-methyl-11-oxa-4-azatetracyclo[8.6.1.0^{... 1668-86-6 Warning
(1α,2α,3α,4β,5α,6β)-1,2,3,4,5,6-hexachlorocyclohexane 319-86-8 Danger
(1α,2α,3α,4β,5β,6β)-1,2,3,4,5,6-hexachlorocyclohexane 6108-10-7 Danger
(1α,2α,3β,4α,5β,6β)-1,2,3,4,5,6-hexachlorocyclohexane 319-84-6 Danger
(1α,2β,3α,4β,5α,6β)-1,2,3,4,5,6-hexachlorocyclohexane 319-85-7 Danger
(1α,2β,4β,6α)-2,2,7-trimethyl-3-oxatricyclo[4.1.1.02,4]octan... 32162-27-9 Danger
(1β,3β,5β)-3-[(6-deoxy-3-O-methyl-α-L-talopyranosyl)oxy]-1,1... 663-95-6 Danger
(20ξ)-3β-[(6-deoxy-α-L-mannopyranosyl)oxy]-1β,5β,11α,14,19-p... 1183-35-3 Danger
(2,4-dichlorophenyl)acetonitrile 6306-60-1 Danger
(2,5-dimethylphenyl)acetonitrile 16213-85-7 Danger
(2,6-dichlorophenyl)acetonitrile 3215-64-3 Danger
(2-aminophenyl)acetonitrile 2973-50-4 Danger
(2-bromophenyl)acetonitrile 19472-74-3 Danger
(+)-2-chloropropiononitrile 70886-58-7 Danger
(2H3)ammonia 13550-49-7 Danger
(2H3)methanol 1849-29-2 Danger
(2H4)methanol 811-98-3 Danger
(2H6)phenol 13127-88-3 Danger
(2H)chloroform 865-49-6 Danger
(2H)formaldehyde 1664-98-8 Danger
(±)-2-hydroxypropiononitrile 42492-95-5 Danger
(±)-2-propylpiperidine 3238-60-6 Danger
(2S)-2-(chloromethyl)oxirane 67843-74-7 Danger
(±)-3-(3,4-dimethoxyphenyl)-6-[(5,6-dimethoxyphenethyl)methy... 56949-77-0 Danger
(3,4-dichlorophenyl)acetonitrile 3218-49-3 Danger
(3aα,4β,7β,7aα)-octahydro-4,7-methano-1H-indene 2825-82-3 Danger
(±)-[3-cyano-3-(3,4-dimethoxyphenyl)hex-6-yl](5,6-dimethoxyp... 23313-68-0 Danger
(3-phenoxyphenyl)glycolonitrile 39515-47-4 Danger
(3β,5β)-3,5,14,19-tetrahydroxycard-20(22)-enolide 560-54-3 Danger
(4-chlorophenyl)hydrazine 1073-69-4 Danger
(5α)-6,7,8,14-tetradehydro-4,5-epoxy-6-methoxy-17-methylmorp... 467-04-9 Danger
(5α,6β)-4,5-epoxy-3,6-dimethoxy-17-methylmorphinan 41714-53-8 Danger