Unless it was spectrophotometric grade, which would be very expensive,
the other 5% might have included benzene.
For that matter, there are denatured alcohols sold for rubbing alcohol
and shellac thinner that are 95% ethanol.
Dad was in the Navy, just missing the first Vietnam escalation.
The buddies he keeps in contact with were another Helo pilot, and the
Guess which one had access to drinkable grain alchohol.
When I was in college spectrophotometric grade was pretty pure
and therefor quite expensive. Reagent grade was contaminated with
benzene which was a non-issue because the benzene did not interfere
with typical organic chemistry class uses--which did not include
That is what our professor told us. Maybe they just didn't want us
stealing the stuff. Or maybe your professors were social Darwinists...
Benzene is used to dehydrate and get higher percentage than the azeotropic
If you want aliphatic only, makes sense to avoid benzene.
As there were no females, save nuns, (ok to date 'em, as long as you don't
get into the habit) at the school, we took our "jungle juice" on the road.
If the stuff hadn't been available, we would have distilled it on our own.
I though this was about methanol? When was there a differentiation in
taxes between farm and non-farm methanol?
If you are really talking about gasoline, I think something got lost
in the translation or your grandfather was a bit dotty. Dyes are used
in diesel for tax differentiation purposes, but in gas? Something is
screwy about this. Pump gas for cars has been colored since I was
little--yellow to red. What color would they put in farm gas? (or
maybe they didn't color it?) If the bread took all the color out,
what would they use to make it red like regular pump gas? And why in
hell would you use bread instead of diatomaceous earth? Are we
talking about the 1920s? 30s? I know it was not true in the 40s.
Maybe this coloring things has something to do with oil field areas a
burnable fraction was actually pumped (and stolen).
Eddie Munster wrote:
I don't know about the gas being colored, but I do know that in the early
'50s, farmers got a tax break on gasoline for "farm" use, and you could get
your farm tank filled by Agway, but you were NOT supposed to use it in your
auto, motorcycle, etc. I don't know as there was any actual telltale
connected with it, but I know Uncle never put it in any car, except maybe a
couple gallons in an emergency if someone didn't put gas in while in town,
and it might not make it to town.
Same system still in effect in all ag areas afaik.
Colored fuels came into being at least by the mid-50's (here in KS,
anyway). I'm not old enough to know prior to then just how far back it
actually goes. Multiple purposes--product indentification plus as in
the above example tax purposes. Farm diesel is still colered
differently from truck/pump/highway diesel as it is not subject to road
taxes (and, depending on local jurisdiction, perhaps other fees/taxes as
well). To best of my knowledge, there's so little farm gasoline these
days there is no off-road available (certainly not here, anyway). For
the old tractors and trucks, we buy pump gas, keep records of what is
off-road (local Co-op has key pumps so we have separate farm/non-farm
keys) and deduct the tax off the taxes when file.
One doson't want to be caught by the weigh station guys w/ long
haul/non-farm use farm diesel! They're pretty serious about
Yep, they really want to know about that diesel fuel. I was still driving
truck when that changeover came in the 90's. Wasn't just the weigh stations,
they set up random checks all over PA just to see the color of your diesel
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