On Friday, June 11, 1993 at 9:16:46 AM UTC+10, Neal Howard wrote:   
   > >Answer for (2):  Cyclohexane is *relatively* unreactive compared to all the   
   > >other compounds in an intro organic chem text :) because its bonds (C-C and   
   > >C-H) have little or no dipole moments, and most reactions depend on   
   > >interactions between positive/negative charges or charge asymmetries.   
   > >However, cyclohexanes DO undergo one reaction easily --- they burn!   
   >   
   > ... and I have a question about the burning of cyclohexane, anybody know   
   > what the comparative octane rating (research number) of cyclohexane is?   
   > I've got a couple of textbooks which list various straight, branched, and   
   > aromatic hydrocarbons' octane numbers (i.e n-heptane = 25   
   > 					   n-hexane  = 65   
   > 					   ...   
   > 					   ...   
   >                                            iso-octane = 100 (reference)   
   > 					   benzene    = 106   
   > 					   toluene    = 120   
   > 					   racemic xylene = 126)   
   >  but there is no mention of cyclohexane. Also is cyclohexane more expensive   
   >  than toluene when purchased a couple gallons at a time? Last summer, I found   
   >  almost a gallon of benzene in an old machine shop building and used it as   
   >  octane booster in my motorcycle and it worked pretty well. I've used small   
   >  amounts of toluene (berryman chemtool) but I'm a little leary of dissolving   
   >  the neoprene in the fuel lines and carburetor internals with too much   
   >  toluene (or xylene). The benzene was almost perfect as an octane booster and   
   >  didn't attack neoprene nearly as much as toluene or xylene do. Could   
   >  cyclohexane be the miracle spooge I'm looking for or is it too expensive or   
   >  does it's fuel performance in a piston engine suck?   
   Can I please know how the date of this post goes back to 1993 when google was   
   founded in 1998.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)