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Homemade and Repurposed Lab Gear
I recently made a DIY overhead stirrer.
I got everything from amazon except the wall wart to power ...
26-1-2021 at 15:50
by: macckone
Crashing out of water using alcohol as a cosolvent is useful for a number of purifications ...
26-1-2021 at 15:32
by: macckone
Klean Strip MEK discontinued?
sunnyside still makes MEK but it is not available in some states.
Toluene is restricted in mine and ...
25-1-2021 at 13:27
by: macckone
Hexamine fuel tablets are being replaced already.
Acetone - heat calcium acetate or oxidize isoprop ...
15-1-2021 at 19:27
by: macckone
Campa-chem original as formaldehyde source?
It is only blue if you use campa chem or add dye
15-1-2021 at 19:17
by: macckone
It isn't the end of home chemistry.
It just moves the goal posts.

This isn't exactly news. Ther ...
15-1-2021 at 11:56
by: macckone
Oxalate Stain Removal from Stainless Steel Question
use a power buffing wheel (regular sized or dremel).
Oxalic acid is a poor choice.
You likely etch ...
14-1-2021 at 12:53
by: macckone
filtering ammonia gas
bubbling carbon dioxide is less than optimal.
If you have an old coke or pepsi bottle, put the solu ...
14-1-2021 at 11:41
by: macckone
External heating for bath to allow use of magstir?
ps. by putting a stir bar in the beaker used as a heating bath, the bath gets stirred and it helps c ...
14-1-2021 at 11:16
by: macckone
External heating for bath to allow use of magstir?
boiling benzaldehyde does not require a vacuum.
The amount of benzoic acid created from the oxygen ...
14-1-2021 at 11:14
by: macckone
Campa-chem original as formaldehyde source?
Now you know why the meth is blue.
13-1-2021 at 13:14
by: macckone
External heating for bath to allow use of magstir?
Only mercury stirrer seals are really good for vacuum.
There are probably PTFE seals that work but ...
13-1-2021 at 13:11
by: macckone
Spontanious Cracking on New Branded Glassware ?
10C to 90C is 80C temp change.

That should be fine for 3.3 or lower expansion glass.

Good glas ...
13-1-2021 at 13:05
by: macckone
Sulphuric acid
I would use a double suck-back trap if I was going to do this.
Water and hot sulfuric acid are not ...
12-1-2021 at 14:42
by: macckone
Is it normal to get low yields all the time, or am I a bad organic chemist?
Practice helps a lot.
But some synthesis are poor yielding no matter what, regardless of what the p ...
12-1-2021 at 14:33
by: macckone
Sulphuric acid
It will work.
And note the precautions I suggested, outside AND well ventilated with a watch glass ...
11-1-2021 at 11:03
by: macckone
Getting the sulfur smell out of glassware and reagent bottles
Sulfur is readily oxidizable. Adding bleach converts it to sodium sulfate if you use enough
The me ...
11-1-2021 at 10:45
by: macckone
Most expensive mistakes you've made?
Accidentally throwing away platinum wire on trash day.
11-1-2021 at 10:35
by: macckone
ETN question
Using sulfuric acid as a solvent seems like the solution.
Pun intended.

Extracting the final mix ...
10-1-2021 at 09:32
by: macckone
Sulphuric acid
agree with outer_limits, it depends on the reaction.

If you have 90% however put a beaker on a ho ...
10-1-2021 at 09:19
by: macckone
How to get Methyl Ethyl Ketone (Butanone) in California or suitable alternative?
Two notes. If the plastic didn't soften in oatey products then it is likely PE.
Although it is pos ...
9-1-2021 at 21:17
by: macckone
Any place to get granular purified silicone dioxide for chemistry applications?
Diatomaceous earth washed with acid to remove any calcium carbonate is sold as a filter aid under th ...
9-1-2021 at 21:07
by: macckone
Disposal of copper acetate
copper is valuable enough to plate out or otherwise recover.

If you have metal salts the usual wa ...
9-1-2021 at 15:18
by: macckone
Heating mantle oopsie
What you want is called a thermometer well or thermowell. ...
9-1-2021 at 13:39
by: macckone
Anti-splash Adapter
In my experience the one on the left does have a small drain hole.
I have one similar, but not from ...
9-1-2021 at 13:32
by: macckone
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