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...
ethylene oxide8143 often sometimes almost never
thallium(III) oxide4239 often sometimes almost never
hydrogen cyanide5739 often sometimes almost never
dibromodifluorometahne5238 often sometimes almost never
hydrazoic acid3236 often sometimes almost never
thiophosgene7440 often sometimes almost never
chloroacetaldehyde5138 often sometimes almost never
tetraazido-pentaerythritol7339 often sometimes almost never
oxalonitrile7238 often sometimes almost never
2-ethylpyridine7237 often sometimes almost never
Magic methyl (methylflurosulfonate)5734 often sometimes almost never
phosgene5934 often sometimes almost never
cyanogen bromide7336 often sometimes almost never
acridine9238 often sometimes almost never
Organomercury compounds11340 often sometimes almost never
white phosphorus8736 often sometimes almost never
trimethylsilyl cyanide7734 often sometimes almost never
hexafluoro-2,4-pentanedione9336 often sometimes almost never
ethidium bromide9834 often sometimes almost never
chromyl chloride8433 often sometimes almost never
dimethylmercury11236 often sometimes almost never
methyl isocyanate7831 often sometimes almost never
MOM-Cl (methoxymethyl chloride)91632 often sometimes almost never
tributyltin choride10833 often sometimes almost never
trimethyltin hydroxide11434 often sometimes almost never
Dinitrophenylhydrazones10633 often sometimes almost never
mercuric chloride15638 often sometimes almost never
selenium dioxide8830 often sometimes almost never
hexamethylphosphoramide (HMPA)62028 often sometimes almost never
hydrofluoric acid (HF)81230 often sometimes almost never
hydrogen selenide17138 often sometimes almost never
potassium cyanide71828 often sometimes almost never
fluoroacetic acid11731 often sometimes almost never
MOM6526 often sometimes almost never
sulfur trioxide11531 often sometimes almost never
hexamethylditin14434 often sometimes almost never
fluorine4224 often sometimes almost never
benzyl chloride61725 often sometimes almost never
osmium tetroxide11930 often sometimes almost never
chromium trioxide91228 often sometimes almost never
perchloric acid131032 often sometimes almost never
diepoxybutane18337 often sometimes almost never
thioacetone2121 often sometimes almost never
Ethyl bromoacetate111429 often sometimes almost never
thiophenol111428 often sometimes almost never
hydrogen sulfide15732 often sometimes almost never
acrylonitrile15632 often sometimes almost never
diazomethane17733 often sometimes almost never
lead tetraacetate5121 often sometimes almost never
AIBN (Azobisisobutyronitrile) (heating produces deadly tetramethylsuccinonitrile)91625 often sometimes almost never
NaCN111627 often sometimes almost never
dimethyl sulfate141130 often sometimes almost never
tetramethyl tin19435 often sometimes almost never
ozone15930 often sometimes almost never
2-methoxyethanol4318 often sometimes almost never
HBTU 2-(1H-benzotriazol-1-yl)-1,1,3,3-tetramethyluronium hexafluorophosphate17631 often sometimes almost never
tellurium4018 often sometimes almost never
carbon monoxide171030 often sometimes almost never
Aromatic amines with a blocked para position, i.e. 2-aminonaphthalene (kidney cancer)151328 often sometimes almost never
chloroacetone18729 often sometimes almost never
phosgene9320 often sometimes almost never
carbon disulfide151525 often sometimes almost never
acrylamide gels10620 often sometimes almost never
nitrosobenzene3312 often sometimes almost never
carbon tetrachloride162123 often sometimes almost never
DEAD (diethylazodicarboxylate)171123 often sometimes almost never
indole5211 often sometimes almost never
tributyltin hydride141320 often sometimes almost never
chromic acid reagent191324 often sometimes almost never
sodium cyanide201425 often sometimes almost never
gold5310 often sometimes almost never
thionyl chloride201624 often sometimes almost never
Thiols (all of them)161319 often sometimes almost never
methyl vinyl ketone25828 often sometimes almost never
AgCN013 often sometimes almost never
asdf113 often sometimes almost never
NO gas9311 often sometimes almost never
dimethyl acetylenedicarboxylate012 often sometimes almost never
phosphorus oxychloride211222 often sometimes almost never
BOM-Cl (benzyloxymethyl chloride)27728 often sometimes almost never
boron tribromide222022 often sometimes almost never
benzyl chloride121 often sometimes almost never
BOC2O (di-t-butyl-dicarbonate)231523 often sometimes almost never
KCN626 often sometimes almost never
Mustard compounds101 often sometimes almost never
borane221020 often sometimes almost never
Thalliumhexafluorophosphate905 often sometimes almost never
benzene11116 often sometimes almost never
Aqua Regia (HCl and HNO3)221517 often sometimes almost never
sodium iodide231917 often sometimes almost never
methyl iodide262218 often sometimes almost never
air1758 often sometimes almost never
Bromine293217 often sometimes almost never
benzene34339 often sometimes almost never
pyridine383112 often sometimes almost never
acetonitrile69145 often sometimes almost never
Water (powerful drowning agent)92523 often sometimes almost never