Torpedo juice: Legendary, illegal WWII liquor drunk in Alaska and the world

He told me stories of how they would make barges that would float off the side of the ship, where sailors would go to drink torpedo juice.

He claimed at the time it was only the “expired” kind that they would have to change out anyways.

That's usually true. Adding methanol to ethanol can be either deliberate or accidental. Where I am (Australia) methanol and pyridine used to be added to ethanol as a denaturant so it could be sold without liquor tax and it was sold as 'Methylated Spirits' and labeled 'POISON'. If I recall the amount of methanol was 15% and the pyridine was 3%. Methanol was set at 15% with the deliberate intention of making the 'spirits' toxic and the pyridine to make it foul tasting (and pyridine itself is also toxic). At those percentages both denaturants were similar enough to ethanol as not to interfere significantly with its primarily purposes—as a solvent, fuel, etc.

Nevertheless, that didn't deter diehard drinkers/alcoholics from consuming methylated spirits and the effects on their health were catastrophic—blindness and death.

Several decades ago both methanol and pyridine were removed and replaced with denatonium (aka Bitrex) as the denaturant, which is not toxic at the level necessary for its purpose. Nevertheless, the product is still sold as 'Methylated Spirits' with the fine print calling it 'ethanol solution 95%, UN 1170', and the warning changed from 'POISON' to 'CAUTION'. The logic behind the change being that it was 'safer'—read it cost the State less in medical expenses.

I think the UK has done something similar and no doubt a number of other countries have followed suit, except I believe the US makes ethanol harder to get and usually substitutes isopropanol/rubbing alcohol for domestic use (someone in the US please update me on the rules there).

Since the advent of denatonium as a denaturant, it seems to me there is no need to add methanol and I reckon it ought to be highly illegal to do so. If ethanol/methanol mixtures are needed for some purpose then they should be strictly labeled and denatonium a mandated additive.

What concerns me is the accidental addition of methanol to ethanol (to 'Methylated Spirits'). I use a lot of ethanol in the form of Methylated Spirits for cleaning and as a solvent as it's a much cheaper substitute for isopropanol and I've noticed occasionally that its odor is very different (once every 3 or 4 months on weekly purchases). In fact, I've noticed the odor of formaldehyde on more than one occasion (and that's not the only impurity I've detected by nose).

This tells me there's very little control on the distribution of industrial solvents (in this class that is). I'd suggest tanks/tankers, etc. aren't properly flushed when changing product and or such. If distribution equipment isn't being cleaned properly then people aren't being careful and worse could easily happen.

From my experience it seems to me it's still a very risky business to assume that 'industrial' ethanol is actually just that (95% ethanol, 5% H2O and trace denatonium). There's no way I'd ever risk drinking the stuff—that is assuming I could stand the taste of the excruciatingly bitter denatonium.

I'd be interested to know how other countries now handle the rules in regard to ethanol distribution.

Here, 'absolute ethanol' is typically 99%. No doubt H2O is a significant part of that last 1% but going on my experience with 95% EtOH I wouldn't be a bit surprised about it being benzene and it's likely there's other undesirable stuff as well.

BTW, over the years I've bought a lot of industrial grade 'absolute ethanol' which I use in woodworking as a solvent for shellac. 95% EtOH is unsatisfactory as the water in it often causes the shellac to turn a cloudy/milky colour.

I have to buy the 99% grade in 20-litre plastic containers as usually that's the smallest amount that's supplied. Moreover, it's much more expensive, at least double the price and on par with that of isopropanol.

Given its price and comparative rarity I doubt whether its consumption would be a signifiant problem. Anecdotally, the stuff I buy seems to have significantly more denatonium than the normal EtOH, quite some time after using it I've momentarily held my (dry) hand on my face near my mouth and the denatonium is almost overpowering. That's not the case with normal domestic EtOH (in the same situation denatonium is present but nowhere near as objectionable).