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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-[2-[(4-chlorophenyl)methoxy]-2-(2,4-dichlorophenyl)eth... 68797-31-9 Warning
1-[2-[(4-chlorophenyl)methoxy]-2-(2,4-dichlorophenyl)ethyl]-... 24169-02-6 Warning
1,2,4-triazole-3-thiol 3179-31-5 Warning
1,2,4-tribromobenzene 615-54-3 Warning
1,2,4-trichlorobenzene 120-82-1 Warning
1,2,4-trimethylcyclohexane 2234-75-5 Warning
1,2,4-trimethylcyclopentane 2815-58-9 Danger
1,2,5,6,9,10-hexabromocyclododecane 3194-55-6 Warning
1,2,5,8-tetrahydroxyanthraquinone 81-61-8 Warning
1-(2,6,6-trimethyl-3-cyclohexen-1-yl)-2-buten-1-one 57378-68-4 Warning
1-[2-(allyloxy)-2-(2,4-dichlorophenyl)ethyl]-1H-imidazole 35554-44-0 Danger
(±)-1-[2-(allyloxy)ethyl-2-(2,4-dichlorophenyl)]-1H-imidazol... 83918-57-4 Warning
1-[2-(allyloxy)ethyl-2-(2,4-dichlorophenyl)-1H-imidazolium h... 58594-72-2 Warning
1,2-Benzenedicarboxylic acid, dipentyl ester, branched and l... 84777-06-0 Danger
1,2-benzisothiazol-3(2H)-one 2634-33-5 Danger
1-(2-benzylphenoxy)propan-2-ol 5029-76-5 Warning
1,2-bis(1-methylethyl)benzene 577-55-9 Warning
1,2-bis(2-methoxyphenoxy)ethane 553-45-7 Warning
1,2-bis(3-methylphenoxy)ethane 54914-85-1 Warning
1,2-bis(chloromethyl)benzene 612-12-4 Danger
1,2-bis(phenoxymethyl)benzene 10403-74-4 Warning
1,2-dichloro-1,1,2-trifluoro-2-(trifluoromethoxy)ethane 2356-53-8 Warning
1,2-dichlorobenzene 95-50-1 Warning
1,2-dihydro-3,4,5,6-tetraphenylphthalic anhydride 6971-41-1 Warning
1,2-dimethyl-3,5-diphenylpyrazolium methylsulphate 43222-48-6 Warning
1,2-dinitrobenzene 528-29-0 Danger
1,2-diphenyl-4-(2-phenylthioethyl)pyrazolidine-3,5-dione 3736-92-3 Warning
1-[(2-hydroxyethyl)amino]-4-(methylamino)anthraquinone 86722-66-9 Warning
1-(2-hydroxyphenyl)-3-phenylpropan-1-one 3516-95-8 Warning
1-[[(2-hydroxyphenyl)imino]methyl]-2-naphthol 894-93-9 Warning
1,3,3-trimethyl-2-[2-(1-methyl-2-phenyl-1H-indol-3-yl)vinyl]... 4657-00-5 Danger
1,3,3-trimethyl-2-methyleneindoline 118-12-7 Warning
1,3,3-trimethyl-2-[(methylphenylhydrazono)methyl]-3H-indoliu... 55850-01-6 Danger
1,3,3-trimethyl-2-[[methyl(p-tolyl)hydrazono]methyl]-3H-indo... 68134-38-3 Danger
1,3,3-trimethyl-2-[[methyl(p-tolyl)hydrazono]methyl]-3H-indo... 73019-09-7 Danger
1,3,3-trimethyl-6-azabicyclo[3.2.1]octane 53460-46-1 Warning
(1,3,4,5,6,7-hexahydro-1,3-dioxo-2H-isoindol-2-yl)methyl (1R... 1166-46-7 Warning
1,3,4,6,7,8-hexahydro-4,6,6,7,8,8-hexamethylindeno[5,6-c]pyr... 1222-05-5 Warning
1-[3-[4-((heptadecafluorononyl)oxy)-benzamido]propyl]-N,N,N-... 59493-72-0 Danger
1-(3,5-dihydroxyphenyl)-2-[[2-(4-hydroxyphenyl)-1-methylethy... 3371-33-3 Danger
1,3,5-triazine-2,4,6(1H,3H,5H)-trione, zinc salt 24468-28-8 Warning
1,3,5-trichloro-2,4-dinitrobenzene 6284-83-9 Warning
1,3,5-trinitrobenzene 99-35-4 Danger
1,3-Benzenediamine, 4-methyl-, coupled with diazotized 4-met... 91696-44-5 Danger
1,3-bis(1-isocyanato-1-methylethyl)benzene 2778-42-9 Danger
1,3-bis(3-methyl-2,5-dioxo-1H-pyrrolinylmethyl)benzene 119462-56-5 Danger
1,3-bis[(4-aminophenyl)(2-hydroxyethyl)amino]propan-2-ol tet... 128729-28-2 Danger
1,3-bis(4-cyanophenyl)propane 5737-31-5 Warning
1,3-bis(chloromethyl)benzene 626-16-4 Danger
1,3-dibenzyl-2-thiourea 1424-14-2 Danger