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differences between Denatured Alcohol brands

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Forum topic by trsnider posted 05-26-2016 01:13 AM 548 views 0 times favorited 7 replies Add to Favorites Watch
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trsnider

23 posts in 1673 days


05-26-2016 01:13 AM

This should probably be an FAQ. Is there any real difference between using a DA from a big box store that has 40-60% Ethanol vs one that has ~90%? I’ve decided to branch out from the “big Z” and mix my own. I’ll only mix enough to use so I won’t be storing it for a long period.


7 replies so far

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splatman

586 posts in 1062 days


#1 posted 05-26-2016 02:22 AM

If you mix your own, why not 100% Ethanol instead? Denatured alcohol is so-called because it has additives to render it non-drinkable (according to Wikipedia).
How it functions as a solvent would likely depend partly on the non-ethanol ingredients.

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TheFridge

7080 posts in 1149 days


#2 posted 05-26-2016 02:26 AM

I’ve only recently heard of folks using everclear.

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

View conifur's profile

conifur

955 posts in 815 days


#3 posted 05-26-2016 02:47 AM



I ve only recently heard of folks using everclear.

- TheFridge


A friend makes guitars, thats all he will use to mix his Shellac.

-- Knowledge and experience equals Wisdom, Michael Frankowski

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jdh122

909 posts in 2480 days


#4 posted 05-26-2016 05:37 PM

I wouldn’t use alcohol that was less than 90% to dissolve shellac. I haven’t tried to use the lower proportions, but have read several times in finishing books that you shouldn’t, and it makes sense to me because if you have 40% DNA you have a lot of water in the rest of it, which will hinder the drying of the shellac.

-- Jeremy, in the Acadian forests

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TheFridge

7080 posts in 1149 days


#5 posted 05-26-2016 05:52 PM

I’ve read on many sites that 90% alcohol or better is what to buy. Any less and you risk blushing and whatnot.

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

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MNgary

296 posts in 2080 days


#6 posted 05-27-2016 03:49 AM

Sunnyside brand denatured alcohol only has 5% water. The balance is a combination of ethanol and methanol. Coincidentally I phoned and talked to their engineering department this morning. I had to know so I could mix flattening/softener for veneers.

-- I dream of the world where a duck can cross the road and no one asks why.

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TheFridge

7080 posts in 1149 days


#7 posted 05-27-2016 04:30 AM

Doesn’t sherwin Williams sell that brand? Do you know?

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

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