On Mon, 19 Jan 1998, G. Irvine wrote:
> Why not just use skatol for deco? Add 50% oxygen, and do all your stops
> at exactly 17 feet. This is cheaper, safer , and better, and may in fact
> be in great abundence given all of the bovine scatology being practiced
> here with this subject.
>
dihexymethane-8 (nicknamed "Skatol" due to its source - pig farms)
was experimented with for commericial purposes back in 1972 by COMEX 
for the purpose of shortening decompression times.  The outcome was 
never made public, but as a substitute for N2, I think it still holds 
promise.   With a molecule size considerably smaller than Argon, the 
narcotic potential is considerably reduced, with the only downside being
the mildly offensive smell.  I'm not sure of the current price, anybody
want to call their local gas-supplier and check? 

-Will
 
> andrew wrote:
> > 
> > Will,
> > 
> > Interesting idea.  Why not push it to the extreme?  We have already decided
> > that doing the 3m stop at 6m was better.  If diving Argox50, why not do the
> > whole deco at 20m?  (Or at least something that is reasonably safe
> > considering the ongassing of Argon at 20m.)
> > 
> > Andrew
> > andrew@ce*.co*.jp*
> > 
> > On Sunday, January 18, 1998 5:47 AM, William M. Smithers
> > [SMTP:will@tr*.co*] wrote:
> > >
> > > On Sat, 17 Jan 1998, William M. Smithers wrote:
> > > >
> > > > Anybody know why?  In theory, Argox should give
> > > > all the advantages of deco on 100% O2, while
> > > > totally eliminating O2 toxicity concerns.
> > >
> > > Actually, I should have been more precise, Argox
> > > would give the same He/N2 off-gassing gradient (window)
> > > as 100% O2, eliminate O2 tox concerns, and
> > > offer less vasoconstriction.  The only thing
> > > it wouldn't have going for it the slightly lessened
> > > ability to directly oxygenate any tissues where bubble
> > > formation was causing unnoticed circulation
> > > blockages (if this does in fact occur).
> > >
> > > -Will
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