From: schillin@spock.usc.edu   
      
   "Geoffrey A. Landis"  writes:   
      
   >On 2/4/05 1:22 AM, John Schilling wrote:   
   >> Might this be the Holy Grail, the propellant that fits all nine DOT/UN   
   >> hazard categories simultaneously?   
      
   >Probably not a carcinogen :(   
      
      
   Yes, but carcinogens aren't singled out under the DOT/UN scheme, just   
   lumped in with all the other 6.1 poisons and toxins IIRC.  Or possibly   
   in class 9 "miscellaneous".  I'd wager cyclic ozone is toxic, and we   
   can surely find some miscellaneous hazard associated with it as well   
   (reading the MSDS induces gibbering Lovecraftian insanity?), so it   
   doesn't specifically need to be carcinogenic to touch those bases.   
      
   The hard one is going to be the class 2/3/4 trifecta, with 2 being   
   "hazardous gasses", 3 being "flammable liquids", and 4 "flammable   
   solids".  Seems right out, unless we store the stuff at its triple   
   point.  But, a loophole.  Class 2 includes "liquified gasses", and   
   does not explicitly preclude a liquified flammable gas from being   
   also classed as a "flammable liquid".  And class 4.2 is reserved   
   for pyprophoric materials, 4.3 I believe for materials reactive with   
   water, or possibly I got them backwards.  In any event, per the guy   
   who taught the class that includes *all* pyrophoric or water-reactive   
   substances, regardless of physical state.   
      
   So, if cyclic ozone spontaneously gets it on with air or water, we   
   may have our winner.  Anyone got a sample to test?   
      
      
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