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How hard can it be to purify hardware store chems?
I found out that hardware store caustic soda is sometimes contaminated with mercury due to the proce ...
9-4-2011 at 08:29
by: cnidocyte
Tragedy In Brazil (Rio School)
[rquote=206236&tid=15992&author=quicksilver]
In what manner? Could you elaborate a bit? Is ...
9-4-2011 at 07:40
by: cnidocyte
Distilling down to azeotropic composition
Thanks. Does the column need to be packed?
9-4-2011 at 07:28
by: cnidocyte
I can't get the biuret test to work
I'm trying to test for urea content in instant cold packs which according to whoever replied when I ...
9-4-2011 at 07:23
by: cnidocyte
Tragedy In Brazil (Rio School)
I don't know about Charlie Sheen but I have a bit of an idea whats behind school shootings. Students ...
8-4-2011 at 00:48
by: cnidocyte
Distilling down to azeotropic composition
Lets say I have a 5% HCl solution and want to concentrate it via distillation. If I distill it once ...
8-4-2011 at 00:29
by: cnidocyte
Troubles crystallizing my homemade Rochelle salt
Actually on closer inspection, my Rochelle salt is colourless. I had some serious trouble weighing o ...
22-3-2011 at 14:04
by: cnidocyte
Troubles crystallizing my homemade Rochelle salt
I made some Rochelle salt which I'm gonna need for making biuret reagent. I ended up with a big soli ...
22-3-2011 at 12:57
by: cnidocyte
OTC sandmeyer reactants
Thanks a lot! I like the idea of making azo compounds with paracetamol. Gonna look into 4-amino benz ...
22-3-2011 at 12:54
by: cnidocyte
OTC sandmeyer reactants
Sanymeyer reactions fascinate me and azo dyes are pretty cool but I don't really know any OTC aromat ...
22-3-2011 at 06:57
by: cnidocyte
How to get NaOH from household chemicals ?
[rquote=190387&tid=14660&author=metalresearcher]Drain cleaner contains Al snippets which mak ...
18-3-2011 at 11:01
by: cnidocyte
Does potassium bitartrate have an inverse solubility/temperature dependance?
[rquote=204494&tid=15802&author=mr.crow]Note: Don't use sciencelab.com for MSDS, they are a ...
18-3-2011 at 10:11
by: cnidocyte
Does potassium bitartrate have an inverse solubility/temperature dependance?
Ah right. Thanks. Is it just me or does cream of tartar smell horrific? When a tiny amount of the po ...
17-3-2011 at 06:41
by: cnidocyte
Does potassium bitartrate have an inverse solubility/temperature dependance?
On this MSDS for potassium bitartrate
http://www.sciencelab.com/msds.php?msdsId=9927703
it says t ...
16-3-2011 at 21:04
by: cnidocyte
Alternative OTC sources for bromine
I tried to order from silverprint but they won't ship raw chemicals to Ireland. I ordered some from ...
13-3-2011 at 07:05
by: cnidocyte
Alternative OTC sources for bromine
The only bromine sanitisers I can find in the UK/Ireland are either 1-bromo-3-chloro-5,5-dimethylhyd ...
12-3-2011 at 23:39
by: cnidocyte
Alternative OTC sources for bromine
Due to a shortage of privately owned swimming pools in my country there are very few swimming pool s ...
12-3-2011 at 21:17
by: cnidocyte
Making biuret reagent
The stuff I'm making doesn't seem to be working. I used these instructions:

1. Weigh 1.50 g o ...
1-3-2011 at 13:32
by: cnidocyte
Aquarium nitrite test kit (sulfanilic acid based)
Ah right so theres an unlisted amine in solution B. The instructions say to wait a minute but the so ...
1-3-2011 at 12:50
by: cnidocyte
Aquarium nitrite test kit (sulfanilic acid based)
I got a nitrite test kit from the pet shop and tested it out on an NaNO2/NaCl solution. The test rea ...
1-3-2011 at 11:31
by: cnidocyte
Dangers of distilling unstable compounds like nitromethane
[rquote=202461&tid=15609&author=bahamuth]Why not lower pressure, have distilled litres of th ...
22-2-2011 at 23:24
by: cnidocyte
Making biuret reagent
I know what it is, I'm just wondering where its coordination sites are. If potassium bitartrate comp ...
22-2-2011 at 13:06
by: cnidocyte
Dangers of distilling unstable compounds like nitromethane
I distilled the majority of the methanol out of nitro fuel containing 25% nitromethane so what I hav ...
22-2-2011 at 11:41
by: cnidocyte
Anti bumping measures
I was distilling some methanol out of a mixture containing nitromethane the other day and when I che ...
22-2-2011 at 11:15
by: cnidocyte
Why are pencil sharpners magnesium?
What pencil sharpeners are made of magnesium and what percentage of magnesium is in them?
20-2-2011 at 07:45
by: cnidocyte
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