The Tour of Collective Wisdom presents:
Highly Toxic Reagents


If possible, avoid using these reagents. If not possible, take every precaution to avoid exposure. Not all reagents to avoid are on this list.

Highly toxic reagent:
I often use this I sometimes use this I almost never use this
Verification:
Reagent Use often Use sometimes Use almost never I use this...
phosgene1731102 often sometimes almost never
MOM-Cl (methoxymethyl chloride)2331107 often sometimes almost never
thallium(III) oxide7385 often sometimes almost never
ethylene oxide9884 often sometimes almost never
tetraazido-pentaerythritol7381 often sometimes almost never
hydrazoic acid3874 often sometimes almost never
chloroacetaldehyde6476 often sometimes almost never
oxalonitrile7376 often sometimes almost never
thiophosgene91078 often sometimes almost never
dibromodifluorometahne6674 often sometimes almost never
hydrogen cyanide81375 often sometimes almost never
Organomercury compounds11677 often sometimes almost never
white phosphorus8973 often sometimes almost never
acridine9373 often sometimes almost never
2-ethylpyridine9573 often sometimes almost never
Magic methyl (methylflurosulfonate)9872 often sometimes almost never
chromyl chloride8471 often sometimes almost never
dimethylmercury11373 often sometimes almost never
hexafluoro-2,4-pentanedione10670 often sometimes almost never
methyl isocyanate8867 often sometimes almost never
mercuric chloride15973 often sometimes almost never
cyanogen bromide101067 often sometimes almost never
trimethyltin hydroxide12568 often sometimes almost never
trimethylsilyl cyanide91664 often sometimes almost never
Dinitrophenylhydrazones121167 often sometimes almost never
ethidium bromide151769 often sometimes almost never
hydrogen selenide18371 often sometimes almost never
hexamethylditin16669 often sometimes almost never
fluorine6358 often sometimes almost never
tributyltin choride151166 often sometimes almost never
selenium dioxide92059 often sometimes almost never
sulfur trioxide121162 often sometimes almost never
diepoxybutane18468 often sometimes almost never
thioacetone2352 often sometimes almost never
acrylonitrile16862 often sometimes almost never
hydrofluoric acid (HF)142860 often sometimes almost never
hydrogen sulfide171063 often sometimes almost never
lead tetraacetate7352 often sometimes almost never
tetramethyl tin20965 often sometimes almost never
tellurium5250 often sometimes almost never
chromium trioxide102254 often sometimes almost never
fluoroacetic acid151159 often sometimes almost never
diazomethane191463 often sometimes almost never
perchloric acid142256 often sometimes almost never
hexamethylphosphoramide (HMPA)113553 often sometimes almost never
osmium tetroxide141955 often sometimes almost never
ozone221561 often sometimes almost never
Ethyl bromoacetate162454 often sometimes almost never
carbon monoxide221659 often sometimes almost never
dimethyl sulfate181655 often sometimes almost never
2-methoxyethanol71144 often sometimes almost never
potassium cyanide153351 often sometimes almost never
thiophenol182553 often sometimes almost never
carbon disulfide162551 often sometimes almost never
chloroacetone201355 often sometimes almost never
nitrosobenzene7742 often sometimes almost never
benzyl chloride204754 often sometimes almost never
acrylamide gels131147 often sometimes almost never
NaCN173051 often sometimes almost never
tributyltin hydride181751 often sometimes almost never
HBTU 2-(1H-benzotriazol-1-yl)-1,1,3,3-tetramethyluronium hexafluorophosphate281159 often sometimes almost never
dimethyl acetylenedicarboxylate1432 often sometimes almost never
AgCN3534 often sometimes almost never
indole12341 often sometimes almost never
NO gas11740 often sometimes almost never
Aromatic amines with a blocked para position, i.e. 2-aminonaphthalene (kidney cancer)212150 often sometimes almost never
AIBN (Azobisisobutyronitrile) (heating produces deadly tetramethylsuccinonitrile)213050 often sometimes almost never
Mustard compounds3330 often sometimes almost never
DEAD (diethylazodicarboxylate)221849 often sometimes almost never
BOM-Cl (benzyloxymethyl chloride)281055 often sometimes almost never
sodium cyanide242851 often sometimes almost never
chromic acid reagent212447 often sometimes almost never
methyl vinyl ketone311754 often sometimes almost never
boron tribromide243244 often sometimes almost never
carbon tetrachloride194639 often sometimes almost never
nickel tetracarbonyl1120 often sometimes almost never
Sodium Nitrite31221 often sometimes almost never
phosphorus oxychloride252942 often sometimes almost never
borane291546 often sometimes almost never
Thiols (all of them)242538 often sometimes almost never
KCN141426 often sometimes almost never
thallium sulfate1113 often sometimes almost never
isopropyl isocyanate0111 often sometimes almost never
silver nitrate81717 often sometimes almost never
diethyl chlorophosphate029 often sometimes almost never
trimethyltin chloride129 often sometimes almost never
chlorine gas057 often sometimes almost never
thionyl chloride353542 often sometimes almost never
BOC2O (di-t-butyl-dicarbonate)402943 often sometimes almost never
potassium cyanide002 often sometimes almost never
Thionyl Chloride354 often sometimes almost never
piperidine111211 often sometimes almost never
Aqua Regia (HCl and HNO3)403829 often sometimes almost never
Bromine465334 often sometimes almost never
sodium iodide443229 often sometimes almost never
methyl iodide574427 often sometimes almost never
BuLi42168 often sometimes almost never
benzene758931 often sometimes almost never
pyridine765618 often sometimes almost never
air701210 often sometimes almost never
Methanol74174 often sometimes almost never
acetonitrile130317 often sometimes almost never
Water (powerful drowning agent)191829 often sometimes almost never