From what is obviously my tenuous understanding of this, it is the percentage of water content that makes the difference.Originally Posted by Rabbit
Well, I *am* chemist, and in a laboratory metho in Australia is called denatured alcohol.The stuff you get from Bunnings will be 95% ethanol, some methanol, some water and some other trace amounts of crap to make it even more undrinkable than the methanol makes it... although I suspect for the purposes of using it to solubilise shellac it probably doesn't makes much difference. Unless you get desiccated denatured or absolute ethanol (that's 100% and *very* expensive) there will always be some water in the mix. lab or industrial grade (like the pic> will not have the extra impurities they add to metho, just etrhanol and methanol. by 100% methylated spirits that does *not* mean 100% ethanol, or it would not *be* methylated spirits :P. But yeh... the industrial stuff is probably better than the domestic stuff.
This is why shellac flake that has been improperly stored and subjected to moisture, will have difficulty fully dissolving.
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