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

Substance	CAS Number	Signal Word
(5α,6β)-7,8-didehydro-4,5-epoxy-3-methoxy-17-methylmorphinan...	509-64-8	Danger
(5α)-7,8-didehydro-4,5-epoxy-3-hydroxy-17-methylmorphinan-6-...	467-02-7	Danger
(5α)-7,8-didehydro-4,5-epoxy-3-methoxy-17-methylmorphinan-6-...	467-13-0	Danger
(8α)-5'α-benzyl-12'-hydroxy-2'-isopropylergotaman-3',6',18-t...	511-07-9	Danger
(8α,9R)-9-hydroxycinchonanium chloride	524-57-2	Danger
''amyl nitrite'', mixed isomers	110-46-3	Danger
(chloromethoxymethyl)benzene	35364-99-9	Danger
(diethylamino)acetonitrile	3010-02-4	Danger
(E)-1,4,5,6-tetrahydro-1-methyl-2-[2-(2-thienyl)vinyl]pyrimi...	5685-86-9	Danger
(E)-2-methylcrotonoyl chloride	35660-94-7	Danger
(E)-m-fluorocinnamic acid	20595-30-6	Danger
(E)-pent-2-enenitrile	26294-98-4	Danger
(epoxyethyl)benzene	96-09-3	Danger
(-)-methyl(α-methylphenethyl)amine	33817-09-3	Danger
(o-chlorophenyl)acetonitrile	2856-63-5	Danger
(p-ammoniophenyl)bis(2-hydroxyethyl)ammonium sulphate	54381-16-7	Danger
(p-toluenesulphonyl)methyl isocyanide	36635-61-7	Danger
(R)-1-chloro-2,3-epoxypropane	51594-55-9	Danger
(R)-3-chloropropane-1,2-diol	57090-45-6	Danger
(R)-N-ethyl-α-methyl-3-(trifluoromethyl)phenethylamine hydro...	3616-78-2	Danger
(R)-N,α-dimethylphenethylamine hydrochloride	826-10-8	Danger
(S)-1,2-epoxypropane	16088-62-3	Danger
(S)-4-[1-hydroxy-2-(methylamino)ethyl]pyrocatechol	150-05-0	Danger
(S)-N-ethyl-α-methyl-m-(trifluoromethyl)phenethylamine hydro...	3239-45-0	Danger
(S)-sec-butylamine	513-49-5	Danger
(trimethylsilyl)acetonitrile	18293-53-3	Danger
(Z)-1,3-dichloropropene	10061-01-5	Danger
(Z)-pent-2-enenitrile	25899-50-7	Danger