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H317 — May cause an allergic skin reaction

Hazard class: Skin sensitization · Category 1, 1A, 1B

541 substances with this hazard classification

What does H317 mean?

The substance may cause an allergic skin reaction (contact dermatitis) upon repeated exposure.

Safety Guidance

Avoid breathing dust, fume, gas, mist, vapours, or spray. Wear protective gloves. If skin irritation or rash occurs, get medical attention.

Substances with H317

SubstanceCAS NumberSignal Word
1,2,3,6-tetrahydromethyl-3,6-methanophthalic anhydride 25134-21-8 Warning
1,2,3,6-tetrahydromethylphthalic anhydride 26590-20-5 Danger
1,2,3,6-tetrahydrophthalic anhydride 85-43-8 Danger
1-(2,3-epoxypropoxy)-2,2-bis[(2,3-epoxypropoxy)methyl]butane 3454-29-3 Warning
1,2,3-Propanetriol, glycidyl ethers 90529-77-4 Warning
1,2,3-trichloro-5-(trifluoromethyl)benzene 50594-82-6 Warning
1,2,3-trichlorobenzene 87-61-6 Warning
1,2,3-trifluoro-4-nitrobenzene 771-69-7 Danger
1,2,3-tris(2,3-epoxypropoxy)propane 13236-02-7 Warning
1-(2,4,4,5,5-pentamethyl-1-cyclopenten-1-yl)ethan-1-one 13144-88-2 Warning
1-(2,4,4-trimethyl-2-cyclohexen-1-yl)-2-buten-1-one 33673-71-1 Warning
1-(2,4-dichlorophenyl)cyclopropanecarbonitrile 71463-55-3 Danger
1-(2,4-dimethyl-3-cyclohexenyl)-2,2-dimethylpropan-1-one 69929-17-5 Warning
1,2,4(or 1,3,5)-trimethylcyclohex-3-ene-1-carbaldehyde 71832-78-5 Warning
1,2,4-triazole-3-thiol 3179-31-5 Warning
1-[[2,5-dimethyl-4-[(2-methylphenyl)azo]phenyl]azo]-2-naphth... 4477-79-6 Warning
1-(2,6,6-trimethyl-1,3-cyclohexadien-1-yl)-2-buten-1-one 23696-85-7 Warning
1-(2,6,6-trimethyl-1-cyclohexen-1-yl)pent-1-en-3-one 127-43-5 Warning
1-(2,6,6-trimethyl-2-cyclohexen-1-yl)hepta-1,6-dien-3-one 79-78-7 Warning
1-(2,6,6-trimethyl-2-cyclohexen-1-yl)pent-1-en-3-one 7779-30-8 Warning
1-(2,6,6-trimethyl-3-cyclohexen-1-yl)-2-buten-1-one 57378-68-4 Warning
1-(2,6,6-trimethyl-3-cyclohexen-1-yl)pent-1-en-3-one 7784-98-7 Warning
(±)-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-aminoethyl)imidazolidin-2-one 6281-42-1 Danger
1,2-Benzenediamine, N-methyl-, phosphate 283167-56-6 Warning
1,2-benzisothiazol-3(2H)-one 2634-33-5 Danger
1,2-benzisothiazol-3(2H)-one, sodium salt 58249-25-5 Warning
1,2-bis[4-fluoro-6-{4-sulfo-5-(2-(4-sulfonaphtalene-3-ylazo)... 155522-09-1 Warning
1,2-bis(dichloromethyl)benzene 25641-99-0 Danger
1,2-bis(vinylsulfonylacetamido)ethane 66710-66-5 Danger
1-(2-bromoethoxy)-2-methoxybenzene 4463-59-6 Warning
1-(2-bromoethyl)-4-ethyl-1,4-dihydro-5H-tetrazol-5-one 84501-67-7 Danger
1-(2-chloro-5-nitrophenyl)ethan-1-one 23082-50-0 Warning
1-(2-chlorophenyl)-2,5-dihydro-1H-1,2,3,4-tetrazol-5-one 98377-35-6 Warning
1-(2-chlorophenyl)-2-thiourea 5344-82-1 Danger
1,2-dichloro-4-nitrobenzene 99-54-7 Warning
1,2-dichlorobenzene 95-50-1 Warning
1,2-dichloropropane 78-87-5 Danger
1,2-dihydro-2-oxo-3-pyridyl acetate 61296-14-8 Warning
1,2-dihydro-6-hydroxy-4-methyl-1-[3-(1-methylethoxy)propyl]-... 68612-94-2 Warning
1,2-dimethylimidazole 1739-84-0 Danger
1,2-dinitrobenzene 528-29-0 Danger
1,2-Ethanediamine, N-(2-aminoethyl)-N'-[2-[(2-aminoethyl)ami... 90366-83-9 Danger
1,2-ethanediylbis(oxy-2,1-ethanediyl) diacrylate 1680-21-3 Warning
1,2-ethanediyl diacrylate 2274-11-5 Danger
1-(2-hydroxyethyl)-1H-pyrazol-4,5-diyldiammoniumsulfate 155601-30-2 Danger
1-[(2-hydroxyethyl)amino]-4-(methylamino)anthraquinone 86722-66-9 Warning
1-[[(2-hydroxyphenyl)imino]methyl]-2-naphthol 894-93-9 Warning
1-[[2-methyl-4-[(2-methylphenyl)azo]phenyl]azo]-N-tridecylna... 57712-94-4 Warning