View Full Version : A Nice Surprise - Copper Acetate

solomon levi
05-19-2009, 11:54 PM
I was needing some glassware this morning and I decided to throw
out the contents of a jar that smelled of vinegar. This has been
sitting for probable a year, back when I was evaporating vinegar
to form crystals of sea salt. I also had put some copper carbonate
in one of the vinegar solutions. Today when I went to dump it, these
beautiful blue crystals were in the bottom, like gems. You can't tell
they're blue unless you get the light on them just right, as in the
last image.


05-20-2009, 12:47 AM
Cool crystals! I really love how copper acetate crystallizes. I've got some laying around that I've been wanting to recrystallize into large crystals. :)

solomon levi
10-22-2009, 05:44 AM
I was gonna start a new thread, but I'll just stick this in here.
These are various salts with vinegar. Usually one evaporates off about
half the vinegar and then sticks the remaining supersaturated solution in
a cool place to sprout, like with the gw crystals. But I often find crystals
in jars I left sitting around for months, as you can see above.

This one is a mixture of vinegar and sal tartari. I was planning to use it
for foliated tartar, but I got distracted as usual and it just sat around and
these crystals appeared.

http://i88.servimg.com/u/f88/12/78/17/61/th/stibi_18.jpg (http://www.servimg.com/image_preview.php?i=187&u=12781761)

This next one's been sitting around for over a year. This time it's red wine vinegar
instead of the white as above, and the salts are from oyster shells I gathered
on the beach - calcium carbonate.

http://i88.servimg.com/u/f88/12/78/17/61/th/stibi_19.jpg (http://www.servimg.com/image_preview.php?i=188&u=12781761)

Here is the green tincted vinegar from copper carbonate. You can see
copper acetate crystals in the post above which come from this solution.
This has also been sitting around for over a year.

http://i88.servimg.com/u/f88/12/78/17/61/th/stibi_20.jpg (http://www.servimg.com/image_preview.php?i=189&u=12781761)

Here's a new one I just started a minium ago, but I won't say what's in it.

http://i88.servimg.com/u/f88/12/78/17/61/th/stibi_21.jpg (http://www.servimg.com/image_preview.php?i=190&u=12781761)

Obviously, you should always be familiar with the materials you're
working with and what kind of reactions might occur. Some salts, of lead
for instance, are very poisonous and you mustn't breathe the dust or the

One last pic which is sort of related, but I can't say much about it as yet.
I'll just throw it in because it's fun. I mixed five different items - different,
yet related. When shaken, they mix into a chaos, but in a couple minutes
they part company and form three distinct layers.

http://i88.servimg.com/u/f88/12/78/17/61/th/stibi_23.jpg (http://www.servimg.com/image_preview.php?i=192&u=12781761)

http://i88.servimg.com/u/f88/12/78/17/61/th/stibi_22.jpg (http://www.servimg.com/image_preview.php?i=191&u=12781761)

One couple claims the top floor and another couple claim the second,
leaving the poor alkali solution alone on the bottom.

What's fascinating to me, and what I tried to show in the pic, is that two
oily products (distinct from the original 5 materials) have manifested
themselves - one between the first and second floor, the other, smaller in
portion, between the second and third. The lower one is definitely reddish.
The upper one is white or yellow, depending on which 'floor' I look through.

solomon levi
10-31-2009, 04:00 PM
Here are some new additions of copper acetate.

A nice cluster:

http://i88.servimg.com/u/f88/12/78/17/61/th/stibi_36.jpg (http://www.servimg.com/image_preview.php?i=205&u=12781761)

And my fattest crystal:

http://i88.servimg.com/u/f88/12/78/17/61/th/stibi_37.jpg (http://www.servimg.com/image_preview.php?i=206&u=12781761)