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H304 — May be fatal if swallowed and enters airways

Hazard class: Aspiration hazard · Category 1

71 substances with this hazard classification

What does H304 mean?

The substance may be fatal if swallowed and enters the respiratory tract (aspiration), causing chemical pneumonia or pulmonary damage.

Safety Guidance

If swallowed, do NOT induce vomiting. Immediately call a poison center or doctor. Store locked up.

Substances with H304

SubstanceCAS NumberSignal Word
1,1,3,3-tetramethylbutyl peroxyneodecanoate 51240-95-0 Danger
1,1-diphenylethylene 530-48-3 Danger
1,1'-vinylidenebiscyclopropane 822-93-5 Danger
1,2,3,4-tetrahydronaphthalene 119-64-2 Warning
1,2,3-trimethylbenzene 526-73-8 Warning
1,2,4-trimethylbenzene 95-63-6 Warning
1,2,4-trimethylcyclopentane 2815-58-9 Danger
1,2-bis(1-methylethyl)benzene 577-55-9 Warning
1,2-dichloroethane 107-06-2 Danger
1,2-dimethylcyclohexane 583-57-3 Danger
1,2-dimethylcyclopentane 2452-99-5 Danger
1,2-dimethylcyclopentene 765-47-9 Danger
1,2-divinylbenzene 91-14-5 Danger
1,3,5-triisopropylbenzene 717-74-8 Danger
1,3-dichloropropene 542-75-6 Danger
1,3-diisopropylbenzene 99-62-7 Warning
1,3-divinylbenzene 108-57-6 Danger
1,4-bis(isocyanatomethyl)cyclohexane 10347-54-3 Danger
1,4-diethylbenzene 105-05-5 Warning
1,4-dimethylcyclohexane 589-90-2 Danger
1,4-dimethylnaphthalene 571-58-4 Danger
1,4-divinylbenzene 105-06-6 Danger
1,6-dichlorohexane 2163-00-0 Danger
1,7,7-trimethyltricyclo[2.2.1.02,6]heptane 508-32-7 Danger
(±)-1-methyl-4-(1-methylvinyl)cyclohexene 7705-14-8 Danger
(1-methylethyl)-1,1'-biphenyl 25640-78-2 Danger
(1-methylpropylidene)bis[tert-butyl] peroxide 13653-62-8 Danger
(1-phenylethyl)xylene 40766-31-2 Danger
(1R,5R)-2,6,6-trimethylbicyclo[3.1.1]hept-2-ene 7785-70-8 Danger
(1S)-3,7,7-trimethylbicyclo[4.1.0]hept-3-ene 498-15-7 Danger
(1S,5S)-2,6,6-trimethylbicyclo[3.1.1]hept-2-ene 7785-26-4 Danger
(1S-cis)-1,2,3,4,5,6,7,8-octahydro-7-isopropylidene-1,4-dime... 88-84-6 Danger
(1α,2α,4β)-1,2,4-trimethylcyclopentane 4850-28-6 Danger
(1α,2β,5α)-2,6,6-trimethylbicyclo[3.1.1]heptane 6876-13-7 Danger
(±)-2,2-dimethyl-3-methylenebicyclo[2.2.1]heptane 565-00-4 Danger
(2H18)octane 17252-77-6 Danger
(2H6)benzene 1076-43-3 Danger
(2H8)toluene 2037-26-5 Danger
(2S)-1,3,4,5,6,7-hexahydro-1,1,5,5-tetramethyl-2H-2,4a-metha... 1135-66-6 Danger
(3aα,4α,7α,7aα)-3a,4,7,7a-tetrahydro-4,7-methano-1H-indene 1755-01-7 Danger
(3aα,4α,7α,7aα)-octahydro-4,7-methano-1H-indene 2825-83-4 Danger
(3aα,4β,7β,7aα)-octahydro-4,7-methano-1H-indene 2825-82-3 Danger
(E)-2,2-dimethylhept-3-ene 19550-75-5 Danger
(E)-3,7-dimethylocta-1,3,6-triene 3779-61-1 Danger
(E)-3-methylpent-2-ene 616-12-6 Danger
(E)-4-methylpent-2-ene 674-76-0 Danger
(E)-7,11-dimethyl-3-methylenedodeca-1,6,10-triene 18794-84-8 Danger
(E,E)-2,6-dimethylocta-2,4,6-triene 3016-19-1 Danger
(E)-hept-3-ene 14686-14-7 Danger
(E)-oct-3-ene 14919-01-8 Danger