Family
Toxic substances
Category 1 to 3 acute toxicants can be fatal or cause serious harm in small amounts. Handle in closed systems where possible, wear appropriate respiratory protection and never eat, drink or store food in the work area.
2,207 indexed substances.
- Nitroxynil1689-89-0C7H3IN2O3
- Nomifensine24526-64-5C16H18N2
- Nonivamide2444-46-4C17H27NO3
- Norcotinine17114-40-8C9H10N2O
- Norepinephrine hydrochloride, (A+-)-55-27-6C8H12ClNO3
- Norgestrienone848-21-5C20H22O2
- NSC-52388616339-07-4C5H11N3O
- O-Cresol95-48-7C7H8O
- o-dichlorobenzene95-50-1C6H4Cl2
- o-Nitrobenzenethiol4875-10-9C6H5NO2S
- o-Nitrobenzonitrile612-24-8C7H4N2O2
- o-Phenetidine94-70-2C8H11NO
- O-Phenylenediamine95-54-5C6H8N2
- O-Terphenyl84-15-1C18H14
- o-Xylyl bromide89-92-9C8H9Br
- O,O-Diethyl dithiophosphate298-06-6C4H11O2PS2
- O,O-diethyl phosphorochloridothioate2524-04-1C4H10ClO2PS
- O,O-dimethyl phosphorodithioate756-80-9C2H7O2PS2
- O,O',O''-Triethyl phosphorothioate126-68-1C6H15O3PS
- O,P'-Ddt789-02-6C14H9Cl5
- OCHRATOXIN A303-47-9C20H18ClNO6
- Ochratoxin B4825-86-9C20H19NO6
- Ochratoxin C4865-85-4C22H22ClNO6
- Octachlorodibenzo-P-dioxin3268-87-9C12Cl8O2
- Octafluorotoluene434-64-0C7F8
- Octanedinitrile629-40-3C8H12N2
- Octanoyl chloride111-64-8C8H15ClO
- Octogen2691-41-0C4H8N8O8
- Omethoate1113-02-6C5H12NO4PS
- Ondansetron99614-02-5C18H19N3O
- Orphenadrine83-98-7C18H23NO
- Orphenadrine Hydrochloride341-69-5C18H24ClNO
- Osmium Tetroxide20816-12-0O4Os
- Oxalyl chloride79-37-8C2Cl2O2
- Oxamyl23135-22-0C7H13N3O3S
- Oxarsanilic acid98-14-6C6H7AsO4
- Oxazolam24143-17-7C18H17ClN2O2
- Oxeladin468-61-1C20H33NO3
- Oxomemazine3689-50-7C18H22N2O2S
- Oxotremorine70-22-4C12H18N2O
- Oxprenolol6452-71-7C15H23NO3
- Oxydemeton-methyl301-12-2C6H15O4PS2
- Oxydisulfoton2497-07-6C8H19O3PS3
- Oxygen difluoride7783-41-7F2O
%20--%3e%3csvg%20xmlns:svg='http://www.w3.org/2000/svg'%20xmlns='http://www.w3.org/2000/svg'%20version='1.0'%20width='579pt'%20height='579pt'%20viewBox='0%200%20579%20579'%3e%3cpath%20d='M%2025.301165,289.67172%20289.32987,553.70044%20553.40261,289.6277%20C%20465.35022,201.6757%20377.47182,113.54942%20289.3739,25.643024%20L%2025.301165,289.67172%20z'%20style='fill:%23ffffff;stroke:none'%20/%3e%3cpath%20d='M%20147.65941,148.01233%206,289.67173%20147.66886,431.34059%20289.32827,573%20431.01602,431.31224%20572.70378,289.62449%20431.06327,147.98398%20C%20353.16571,70.086424%20289.40386,6.34347%20289.37551,6.34347%20c%20-0.0284,0%20-63.79965,63.752403%20-141.7161,141.66886%20z%20M%20408.62189,170.42535%20527.82103,289.62449%20408.5652,408.88032%20289.31882,528.1267%20170.12913,408.87087%2050.939444,289.61504%20170.13858,170.41591%20C%20235.69574,104.85874%20289.34716,51.22622%20289.37551,51.22622%20c%200.0283,0%2053.68922,53.64197%20119.24638,119.19913%20z'%20style='fill:%23ff0000;stroke:none'%20/%3e%3cpath%20d='m%20358.6875,105.6875%20c%20-11.0423,11.95104%20-0.0346,61.12295%20-22.84375,107.21875%20-11.82513,-12.61346%20-16.56692,-36.26863%20-29.96875,-48.09375%207.07046,18.13186%20-12.62633,16.55766%20-5.53125,79.625%20-10.70725,-2.67681%20-11.03725,-7.08846%20-34.6875,-35.46875%204.40353,27.52204%201.60663,44.94217%207.125,75.6875%200,0%20-5.70036,-1.20109%20-33.125,-21.3125%208.90084,29.98175%20-6.64874,93.11169%2028.78125,137.75%20L%20268.3125,401%20c%202.72662,40.394%2031.19994,73.76178%2069.125,83.84375%20l%20-68.53125,0%200,29.03125%20191.125,0%200,-29.03125%20-74.53125,0%20c%2034.31242,-9.12298%2060.86623,-37.31555%2067.625,-72.53125%20l%200,-0.0312%20c%209.39301,-15.01304%2051.40412,-63.61206%2019.09375,-141.8125%200,0%20-9.4793,17.37784%20-26.8125,22.0625%200,0%2022.20763,-37.01824%203.9375,-67%200,0%20-5.35488,21.90682%20-23.625,22.84375%200,0%208.89287,-46.72414%20-15,-76.46875%20-8.67176,19.70855%205.19251,27.87556%20-23.65625,44.15625%20-3.94686,-60.72292%20-16.54987,-70.95791%20-28.375,-110.375%20z%20M%20352.375,238.125%20c%2011.01517,6.77856%2018.93899,18.4373%2021.34375,40.3125%201.05774,9.62189%204.65443,15.13583%207.28125,24.90625%20-6.29922,-1.34256%20-12.83332,-2.0625%20-19.53125,-2.0625%20-8.18497,0%20-16.11998,1.04974%20-23.6875,3.03125%20-1.67751,-31.86822%2015.00282,-24.87128%2014.59375,-66.1875%20z%20M%20312.1875,261%20c%200,0%204.40898,27.77921%2015.65625,46.53125%20-7.92479,3.0634%20-15.31997,7.1944%20-22.03125,12.1875%20-3.69493,-28.7985%204.67257,-35.31053%206.375,-58.71875%20z%20m%2097.75,14.1875%20c%200,0%204.12977,27.81515%209.75,46.46875%20-8.90612,-7.11682%20-19.14913,-12.63435%20-30.28125,-16.125%204.69142,-9.60066%2011.90829,-22.24339%2020.53125,-30.34375%20z%20m%20-141.125,30.75%20c%200,0%208.37007,8.44267%2030.25,19.28125%20-7.67749,6.90282%20-14.19535,15.07005%20-19.25,24.15625%20-3.41197,-11.17507%20-8.20021,-28.03871%20-11,-43.4375%20z%20m%20185.28125,10.25%20c%200.73429,10.28004%200.74714,35.28952%20-3.9375,48.875%20l%200.0312,0.46875%20c%20-4.13898,-12.61932%20-10.89159,-24.04796%20-19.625,-33.65625%205.63339,-4.50221%2015.21199,-11.68192%2023.53125,-15.6875%20z%20m%20-93.4375,10.90625%20c%2036.83069,10e-6%2066.71875,29.91931%2066.71875,66.75%200,36.83069%20-29.88806,66.71875%20-66.71875,66.71875%20-36.83068,0%20-66.71875,-29.88806%20-66.71875,-66.71875%200,-36.83068%2029.88806,-66.75%2066.71875,-66.75%20z'%20transform='scale(0.8,0.8)'%20style='fill:%23000000;stroke:none'%20/%3e%3c/svg%3e)
- Oxymetazoline1491-59-4C16H24N2O
- Oxyphenisatin125-13-3C20H15NO3
- Ozone10028-15-6O3
- p-(Chloromercuri)benzoic acid59-85-8C7H5ClHgO2
- p-Aminohippuric acid61-78-9C9H10N2O3
- p-ARSANILIC ACID, 2-HYDROXY-6318-57-6C6H8AsNO4
- p-Chloro-o-toluidine hydrochloride3165-93-3C7H9Cl2N
- P-Chloroacetophenone99-91-2C8H7ClO
- P-Cymene99-87-6C10H14
- p-Ditolymercury537-64-4C14H14Hg
- p-Fluoronitrobenzene350-46-9C6H4FNO2
- p-Fluorophenethylamine1583-88-6C8H10FN
- p-Fluorophenylalanine51-65-0C9H10FNO2
- p-Menth-4(8)-en-3-one15932-80-6C10H16O
- p-nitroaniline100-01-6C6H6N2O2
- P-Nitrobenzotrifluoride402-54-0C7H4F3NO2
Other families
SolventsAcidsBases and alkalisOxidizersAlcoholsKetonesAldehydesPhenolsEstersEthersAminesNitrilesAromatic hydrocarbonsAliphatic hydrocarbonsHalogenated solventsGlycols and glycol ethersOrganic peroxidesIsocyanatesEpoxidesAmidesSulfur compoundsNitro compoundsHalogens and halidesHeavy metals and saltsCMR substancesFlammable substancesCorrosive substancesCompressed gasesEnvironmental hazards