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Collection of colored gases/vapors The subject of blue gases has been discussed before http://www.sciencemadness.org/talk/viewthread.p ...	17-10-2016 at 12:12 by: unionised
Clean ancient coins? As far as I'm aware, the best advice for how to clean rare coins is "don't. For some reason AJKOER ...	16-10-2016 at 20:40 by: unionised
Cheap titanium sheet on ebay Is it possible to anneal the stuff to soften it up? if you want to make electrodes from it softenin ...	14-10-2016 at 23:26 by: unionised
collect gas in a cylinder [rquote=463701&tid=69672&author=ave369]What pressure will be generated if you put bicarbonat ...	14-10-2016 at 12:29 by: unionised
collect gas in a cylinder [rquote=463622&tid=69672&author=brubei]place ammonium in a full aluminium chantilly propella ...	13-10-2016 at 23:56 by: unionised
How much phosphorus pentoxide Why use such an expensive drying agent for a solvent that can be dried by simple distillation? Also ...	12-10-2016 at 11:34 by: unionised
Dissolving silver as silver lactate? IIRC silver tartrate decomposes- the silver oxidises the tartrate ion. I can see the same thing hap ...	11-10-2016 at 06:51 by: unionised
Liquid chlorine or ammonia via liquid propane - possible? I suspect that mixtures of LPG and chlorine can de tonate.	11-10-2016 at 05:37 by: unionised
Potassium bisulfate If it's a rock hard lump there probably isn't much excess acid there. Recrystallisation from wat ...	4-10-2016 at 13:03 by: unionised
insoluble copper chloride? [rquote=244558&tid=19655&author=vampirexevipex]I was using copper chloride ...[/rquote] Wha ...	3-10-2016 at 03:20 by: unionised
Flushing 8 liters Hg through the loo on YT, unsafe ? Mercury was used as a laxative in the past- so he's not the first person t flush it.	2-10-2016 at 08:27 by: unionised
Oxidation via bubblers - what rate can be expected and how to improve absorption? If you blow air through a solution of HCl everything in the room will go rusty unless you trap the H ...	25-9-2016 at 06:16 by: unionised
Can sulfur trioxide be stored under paraffin at room temperature? [rquote=461522&tid=69262&author=buuun][rquote=461521&tid=69262&author=unionised]It w ...	19-9-2016 at 13:15 by: unionised
Can sulfur trioxide be stored under paraffin at room temperature? It would produce a mixture of an oxidant and a fuel. Not a game I'd play.	19-9-2016 at 12:40 by: unionised
Ultra high vacuum It won't measure down to anything like UHV. You may not be able to obtain spare measuring heads for ...	17-9-2016 at 08:13 by: unionised
Extracting PdCl2 from a carpet Since air is free, burning the carpet will be the cheapest way to simplify the problem to one of man ...	10-9-2016 at 06:44 by: unionised
What's the most expensive substance you've bought? I never bought anything spectacularly expensive, but I made some things that took a week or two of m ...	4-9-2016 at 03:21 by: unionised
Most overrated and underrated hazardous chemicals? [rquote=459025&tid=68548&author=Cryolite.][rquote=458935&tid=68548&author=Velzee]Lea ...	31-8-2016 at 11:42 by: unionised
Best way to reduce noise/silence a vacuum pump? [rquote=459302&tid=68636&author=aga]Just switch it off [/rquote] OK so he was probabl ...	30-8-2016 at 07:52 by: unionised
Mystery metal A black coating suggests to me that there are two (or more) metals present. For example, perhaps it ...	30-8-2016 at 07:39 by: unionised
How do i get tricalcium phophate out of my flask? There's always this sort of thing. http://www.lakeland.co.uk/8949/Magic-Copper-Balls-For-Cleaning-V ...	21-8-2016 at 12:47 by: unionised
How do i get tricalcium phophate out of my flask? Citric acid might also do the trick. Sulphuric- the obvious cheap strong acid- will make gypsum whi ...	21-8-2016 at 10:12 by: unionised
Ultra high vacuum Like this? https://en.wikipedia.org/wiki/Ion_pump_(physics)	20-8-2016 at 06:11 by: unionised
Cleaning Glassware/how clean should it be? [rquote=457629&tid=68160&author=Metacelsus]In the lab where I work, visible contamination is ...	13-8-2016 at 06:29 by: unionised
difference between fluorescent and non-fluorescent tlc plates The fluorescent plates are quite bright when lit with 254 nm UV but they don't fluoresc at all when ...	7-8-2016 at 04:56 by: unionised
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