Poison Gases*

No liquified or compressed gases on this list are to be ordered, and no work with them is to be undertaken, without written approval from the Safety Committee or Chair.   Approval will be available immediately when written standard operating procedures have been submitted and found acceptable (SOPs must address normal precautions pertaining to health and safety, as well as emergency procedures), hazard assessments and PPE training completed, and all staff working with and near the item(s) have been apprised of the hazards, the means of detecting releases, and the symptoms of exposure.   Contact swihart@purdue.edu. 

ammonia
arsine
boron trichloride
boron trifluoride
bromine chloride
carbon monoxide
carbonyl fluoride
carbonyl sulfide
chlorine
chlorine pentafluoride
chlorine trifluoride
coal gas
cyanogen
cyanogen chloride
diborane
dichlorosilane
dinitrogen tetroxide
ethylene oxide
fluorine
germane
hexaethyl tetraphosphate
hexafluoroacetone
hydrogen bromide
hydrogen chloride
hydrogen iodide
hydrogen selenide
hydrogen sulfide
methyl bromide
methyl chloride
methyl mercaptan
methylchlorosilane
nitric oxide
nitrogen trifluoride
nitrogen trioxide
nitrosyl chloride
oil gas
oxygen difluoride
perchloryl fluoride
phosgene
 
phosphine
phosphorus pentafluoride
selenium hexafluoride
silicon tetrafluoride
stibine
sulfur dioxide
sulfur tetrafluoride
sulfuryl fluoride
tellurium hexafluoride
trifluoroacetyl fluoride
trifluorochloroethylene
tungsten hexafluoride
*reference is to compressed and liquified gases obtained in cryo-freezers, cylinders, lecture bottles, or other gas containers, not to purchased liquid mixtures, e.g. BF3 etherate, nor aqueous NH3, HCl, HBr....

See copy of DOT hazmat table for more info on hazard classes of materials.  (The DOT hazmat table is the source of the designation of certain materials as Poison Gases.)