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check for urea in ammonium nitrate
Thank you B(a)P for the tip.

So if I understand, nitric acid will produce a white precipitate in ...
12-6-2022 at 06:59
by: Arthur Dent
Steel wool on hot plate for even heating??
I bought from a craft store some fine white "decorative" sand (slightly beige ;) ) and I cleaned it ...
30-11-2020 at 14:01
by: Arthur Dent
Steel wool on hot plate for even heating??
I never put glassware directly on my hotplate, unless it is at very low heat. When I need to use hig ...
30-11-2020 at 10:22
by: Arthur Dent
Copper sulphate preparation question
Preparing a batch of CuSO4, gently boiling and releasing some ominous NO2 fumes. :o

Nice blue col ...
9-11-2020 at 11:58
by: Arthur Dent
Has anyone dissolved Titanium Dioxide?
My source for nice, clean titanium in ample quantity is an old, defunct powerBook G4 Titanium, of wh ...
24-9-2020 at 08:05
by: Arthur Dent
Gold extraction attempt
Next on my "to do" list. I have an ever growing jar of gold-plated e-junk, ready to be turned into p ...
5-12-2019 at 07:28
by: Arthur Dent
Storage containers
Oh. Uh. Argh. KMnO4... my finger slipped... honest! ;) LOL
16-10-2019 at 10:39
by: Arthur Dent
pH measurement tool?
For pH testing, the cheap chinese pH meters from Ali are adequate. As a trick, after you do a readin ...
15-10-2019 at 12:04
by: Arthur Dent
Storage containers
I usually use 1l growlers from breweries, and as a bonus, they come with the nice bakelite caps with ...
15-10-2019 at 11:55
by: Arthur Dent
Make Cobalt Chloride from Cobalt Metal?
I acquired 500g of Cobalt Carbonate from a pottery shop a while ago, the purpose of that purchase wa ...
1-10-2019 at 11:17
by: Arthur Dent
Weird nitric acid after 2 to 3 months storage
My original glass bottle from Anachemia is kept in a plastic bin, and aside from a few fumes collect ...
24-7-2019 at 07:17
by: Arthur Dent
sharing Awesome Chemical Pictures (Read first comment)
Here are some Manganese Chloride I synthesized a few years ago.
There might be a bit of iron conta ...
14-4-2019 at 05:17
by: Arthur Dent
Has anyone used plumbers TFE paste / joint compound for glass joints?
I use silicon dielectric compound, similar to this: ...
13-3-2019 at 11:23
by: Arthur Dent
Quick test to detect copper traces
Thanks J_sum1, ammonia was exactly what I was looking for!
The reaction is very visible and that's ...
24-6-2018 at 03:31
by: Arthur Dent
Quick test to detect copper traces
Hello folks!
Is there a quick and dirty test to detect traces of copper in water?

I utfse'd the ...
23-6-2018 at 14:40
by: Arthur Dent
The Short Questions Thread (4)
Here's an image of the parts in question, they're rack-mount brackets, which originally had a golden ...
20-3-2016 at 06:00
by: Arthur Dent
The Short Questions Thread (4)
Hi all,

Quick question about rust. Just acquired a piece of equipment with rusty bolts and nuts.. ...
20-3-2016 at 05:54
by: Arthur Dent
more gold refining questions
Quick question about Aqua Regia:

I have some e-scrap that i've been gathering over the past few ...
18-1-2016 at 10:51
by: Arthur Dent
Chemistry Goals, 2016
I should dust off my chemistry gear (it's been unused for far too long) and get back to it.

I'd l ...
6-1-2016 at 07:47
by: Arthur Dent
Making copper salts (especially basic copper carbonate)
One of my favorite ways of drying basic copper carbonate, after a thorough wash, the pale green slur ...
4-1-2016 at 09:51
by: Arthur Dent
Manganese Dioxide from Manganese Sulfate
It is indeed pretty hard to purify and clean-up MnO2 from batteries, it's a mess from beginning to e ...
11-5-2014 at 08:13
by: Arthur Dent
Yellow stain on glassware
THe idea of oxalic acid is interesting, although this chemical is pretty hard to find at reasonable ...
1-1-2014 at 13:41
by: Arthur Dent
Pretty Pictures (2)
Quick follow-up to last week's experiment:
You can already see the formation of Copper Acetate crys ...
1-1-2014 at 13:30
by: Arthur Dent
Storage of Elemental Mercury
My small stash of mercury is conveniently stored in the safest of containers... a handful of large i ...
27-12-2013 at 17:02
by: Arthur Dent
Chemist's Nightmare
My modest extra-light nightmare was a moment of dumb inattention. Had been drying Copper Carbonate s ...
27-12-2013 at 16:45
by: Arthur Dent
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