[Demolition]

blipblop,

Yeah, I didn't follow the line of my own reasoning far enough. Basically, as kelston said, the absence of water prevents oxidation. This is a good thing, especially in perpetually humid environments (like where I live

) where the water may hang around for a while before evaporating.

D.

 

[Sovkiller]

If you can find a Drug Emporium, around home they have it, on the rest the highest I have seen is is 91% that IMO should be good enough...

 

[Sovkiller]

Here you can get it, not cheap though.....

http://www.artcochemical.com/Product...ls.htm#Ethanol

 

[loveheadphones]

just wanted to say...
the fact that there is some methanol in your "almost pure" ethanol doesn't really have to do with the toxicity of it. a very common industrial operation is the binary distillation of methanol and ethanol. they have very close boiling points (relatively) so it takes a lot of equilibrium stages in a distillation column to get high purity ethanol. there will always be a little bit of methanol in there if it was in the starting feed.

so your ethanol has measurable quantities of methanol because it's cheaper to make it that way

less stages = smaller distillation column = less money to run

 

[guzzler]

Quote:

Originally posted by loveheadphones just wanted to say... the fact that there is some methanol in your "almost pure" ethanol doesn't really have to do with the toxicity of it. a very common industrial operation is the binary distillation of methanol and ethanol. they have very close boiling points (relatively) so it takes a lot of equilibrium stages in a distillation column to get high purity ethanol. there will always be a little bit of methanol in there if it was in the starting feed. so your ethanol has measurable quantities of methanol because it's cheaper to make it that way less stages = smaller distillation column = less money to run

true, but technical grade lab ethanol is deliberately laced with methanol. Pretty much any industrially produced ethanol with have methanol as you can never acheive 100% seperation (of anything for that matter)

g