ChemicalScan ChemicalScan

H400 — Very toxic to aquatic life

Hazard class: Hazardous to the aquatic environment, acute hazard · Category 1

326 substances with this hazard classification

What does H400 mean?

The substance is very toxic to aquatic organisms at very low concentrations.

Safety Guidance

Avoid release to the environment. Collect spillage. Dispose of contents and container in accordance with regulations.

Substances with H400

SubstanceCAS NumberSignal Word
1,3-dibenzylurea 1466-67-7 Warning
1,3-dibromo-5,5-dimethylhydantoin 77-48-5 Danger
1,3-dichloro-5,5-dimethylhydantoin 118-52-5 Warning
1,3-dichloro-5-ethyl-5-methylimidazolidine-2,4-dione 89415-87-2 Danger
1,3-dichloroacetone 534-07-6 Danger
1,3-dichloropropene 542-75-6 Danger
1,3-diisopropylbenzene 99-62-7 Warning
1,3-dimethylnaphthalene 575-41-7 Warning
1,3-dinitrobenzene 99-65-0 Danger
1,3-di-o-tolyl-2-thiourea 137-97-3 Danger
1,3-diphenylpropane 1081-75-0 Warning
(±)-13-ethyl-3-methoxy-18,19-dinor-17α-pregna-2,5(10)-dien-2... 799-43-9 Warning
(±)-13-ethyl-3-methoxygona-2,5(10)-dien-17-one 6236-40-4 Warning
1-(3-mesyloxy-5-trityloxymethyl-2-D-threofuryl)thymine 104218-44-2 Warning
1-(3-Methyl-2-benzofuranyl)-ethanone 23911-56-0 Warning
1-[3-(phenylmethoxy)phenyl]ethan-1-one 34068-01-4 Warning
1-(4-(2-cloro-α,α,α-p-trifluorotolyloxy)-2-fluorophenyl)-3-(... 101463-69-8 Warning
1,4,5,6,7,7-hexachlorobicyclo[2.2.1]hept-5-ene-2,3-dimethano... 2157-19-9 Warning
1-(4,5-dimethylthiazol-2-yl)-3,5-diphenylformazan 23305-68-2 Warning
1,4,7,10-tetraazacyclododecane 294-90-6 Danger
1,4,7,10-tetrakis(p-toluensulfonyl)-1,4,7,10-tetraazacyclodo... 52667-88-6 Warning
1,4-bis[2-(vinyloxy)ethoxy]benzene 84563-49-5 Warning
1-(4-chlorophenyl)-4,4-dimethyl-3-(1,2,4-triazol-1-ylmethyl)... 107534-96-3 Warning
1-[(4-chlorophenyl)methyl]-1-cyclopentyl-3-phenylurea 66063-05-6 Warning
1,4-dibromo-2-nitrobenzene 3460-18-2 Warning
1,4-dibromobenzene 106-37-6 Danger
1,4-dibutoxybenzene 104-36-9 Warning
1,4-dichloro-2-(1,1,2,3,3,3-hexafluoropropoxy)-5-nitrobenzen... 130841-23-5 Warning
1,4-dichlorobenzene 106-46-7 Warning
1,4-dichlorobut-2-ene 764-41-0 Danger
1,4-dicyano-2,3,5,6-tetra-chloro-benzene 1897-41-2 Warning
1,4-dihydroxy-3-methyl-2-naphthyl 4-aminobenzoate 14748-94-8 Warning
1,4-diisobutyl hydrogen (Z)-N-(3-carboxylatoacryloyl)-N-octa... 68906-34-3 Danger
1,4-diisopropylbenzene 100-18-5 Warning
1-[4-(dimethylamino)phenyl]-2-hydroxy-2-phenylethan-1-one 6317-85-7 Danger
1,4-dimethylnaphthalene 571-58-4 Danger
1,4-dinitrobenzene 100-25-4 Danger
1,4-dioxacyclohexadecane-5,16-dione 54982-83-1 Warning
1,4-di-tert-butylbenzene 1012-72-2 Warning
1-(4-heptylphenyl)ethan-1-one 37593-03-6 Warning
1-(4-methoxy-2,3,6-trimethylphenyl)-3-methylpenta-1,4-dien-3... 54757-48-1 Warning
1-(4-methoxy-5-benzofuranyl)-3-phenyl-1,3-propanedione 484-33-3 Warning
1,4-naphthoquinone 130-15-4 Danger
1-(5,6,7,8-tetrahydro-3,5,5,6,8,8-hexamethyl-2-naphthyl)etha... 21145-77-7 Warning
1-(5,6,7,8-tetrahydro-3,5,5,6,8,8-hexamethyl-2-naphthyl)etha... 1506-02-1 Warning
1,5-dibenzoylnaphthalene 83-80-7 Warning
1,5-dichloro-2,4-dinitrobenzene 3698-83-7 Warning
1,5-dihydro-7,8-dimethylbenzo-2,4-dithiepin 36568-23-7 Warning
1,5-dimethoxyanthraquinone 6448-90-4 Warning
1-(5-ethylsulphonyl-1,3,4-thiadiazol-2-yl)-1,3-dimethylurea 30043-49-3 Warning