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Posted on Old Denatured Alcohol is milky, ok to use?

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1026 posts in 292 days

#1 posted 11-17-2018 03:13 AM

+1 do not use it.
If alcohol is not clear, then it is contaminated with more water than alcohol can dissolve into solution, and likely won t even burn. If it has color, that is likely rusty water from can. Pour it out in your rock garden and dispose of it. (water and alcohol will evaporate :)

Best box store alcohol for dissolving shellac is Kleen strip brand green variety.
Many of the other commercial types use denature chemical that does not dissolve the shellac flakes. They work, but are not optimum and create more sludge that needs to filtered.

IMHO – Best solvent(s) for shellac are either Behkol from Mowhwak/Behlen or 100% ethanol grain alcohol from liquor store. Just wished drinkable grain alcohol was not 2x-4x more expensive than denatured alcohol camp stove fuel. :)

- CaptainKlutz

Alright stopped at Walmart and Home Depot on way home. Walmart had the regular Kleenstrip for $4, HD had the green for $8. I bought the green at HD. I mixed up a batch of the green and a tiny bit of the old cloudy stuff out of curiosity, will try them both on a test scrap of walnut tomorrow along with some arm-r-seal and minwax antique oil i have in the garage. Yeah would be nice if the drinking stuff worked out for a good price. A friend of mine makes his own, usually a blueberry flavor though. Thanks all!

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