Re: black copper
- --- In Distillers@yahoogroups.com, "hemo742" <tugar17@...> wrote:
> The latest experiment has been playing with aeration.
> The setup. A 4 liter glass jar with 2 liters of 55% whiskey
> 3 tablespoons of toasted American oak chips. Small aquarium pumpwith
> plastic lines attached to a copper pipe. I am not comfortable withpipe
> immersing my plastic hoses. Let it run for ~72 hours. Afterwards,
> dilution and tasting. The aeration did improve the whiskey by a
> noticeable margin however I did notice something odd. The copper
> that was immersed had turned black.time,
> I washed the copper pipe and the black came off quite easily. I
> repeated the experiment with neutral alcohol and no oak chips. Once
> again the product was noticeably improved, much smoother. This
> no black copper. So the questions;Hi hemo,
> First what could have caused the copper to blacken?
> Second is there a recommended proof for aerating neutral alcohol?
That black on the copper sounds like copper II oxide - cupric oxide -
CUO which is black and used for coloration vs copper I oxide -
cuprous oxide - Cu2O which is red. Must be some type of reaction
going on between the air / charcoal / alcohol mixture and the
As far as aeration of alcohol in an open jar, maybe im missing
something here, but i think you better check your ending abv....
cause me thinks the angels are getting more then their fair share at
your place.... Last i recall was that alcohol evaporates faster
than water in air. Not nice to get them poor lil angels drunk lol.
Vino es Veritas,