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The moment (or moments) that made you realize you had a passion for chemistry
[rquote=625788&tid=81070&author=Pyro_cat]At a very early age I remember being fascinated by ...
10-11-2019 at 15:44
by: S.C. Wack
pet ether/n-hexane from gasoline/petrol
You omit the KMnO4 then say it doesn't work? Distillation of gasoline is organic chemistry? If there ...
10-11-2019 at 15:11
by: S.C. Wack
vacuum distillation
You can refuse to consider mixing in a water chiller now that I've mentioned it.
7-11-2019 at 17:58
by: S.C. Wack
How to verify/identify sodium azide?
[rquote=625414&tid=154258&author=Deathunter88]Why don't you just buy reagent grade sodium az ...
2-11-2019 at 13:52
by: S.C. Wack
Mercury/HNO3 incident
Mercury on copper such as a US penny tends to be obvious. Zn or Al should be fine but Mg and Sn are ...
2-11-2019 at 07:56
by: S.C. Wack
Mercury/HNO3 incident
You realize of course bases tend to precipitate mercury salts...BTW sulfide, oxide, and other Hg sal ...
2-11-2019 at 06:32
by: S.C. Wack
best option for analysing chemicals in home lab
99% of the time, labs don't include the software and obsolete computer that still-working equipment ...
2-11-2019 at 03:23
by: S.C. Wack
Silica gel for food packaging->silica gel for chromatography?
[rquote=625296&tid=154257&author=fusso]Can I process silica gel[/rquote]

IDK, can you? Ch ...
31-10-2019 at 17:20
by: S.C. Wack
Chemical Availability Changes from 15 years ago (US)
I needed some drain cleaner and was surprised to find that $5 walmart 100% lye is in fact, AFAIK, Na ...
30-10-2019 at 17:51
by: S.C. Wack
Safe preparation of lead oxides
It's #2 from the link on the first page, taken from my scan of Blanchard. No doubt both the oxide an ...
28-10-2019 at 15:44
by: S.C. Wack
Nitrostyrene reduction using NaBH4/CuCl2
(M)ethyl alcohol will not form a separate layer with NaOH. IPA will not form peroxides not already p ...
27-10-2019 at 19:00
by: S.C. Wack
Nitrostyrene reduction using NaBH4/CuCl2
Not sure why you have to get toluene involved...it should have been better to extract with IPA and e ...
27-10-2019 at 17:12
by: S.C. Wack
Nitrostyrene reduction using NaBH4/CuCl2
[rquote=625069&tid=84596&author=horribilis]Is it reasonable to assume the solubility of the ...
27-10-2019 at 15:44
by: S.C. Wack
Safe preparation of lead oxides
[rquote=625031&tid=153390&author=Arcaeca]PbO2 decomposes to Pb3O4 around 400 C or so[/rquote ...
27-10-2019 at 11:07
by: S.C. Wack
Advice on protecting a vacuum gauge wanted
There are chemical traps as well (charcoal, zeolite)...more for the protection of the vacuum pump po ...
27-10-2019 at 08:51
by: S.C. Wack
Making sodium by destiling Toluene or similar
I suspect that the relevant thread(s) mention that the dioxane is from a patent that gives no altern ...
23-10-2019 at 16:14
by: S.C. Wack
Constructing a Hershberg stirrer
Hershberg had a chapter in the 1941 Fieser and his stirrer is shown there as well, but the OS pictur ...
23-10-2019 at 13:25
by: S.C. Wack
Safe preparation of lead oxides
Vorobyova suggests repeatedly boiling the product made from PbCO3 with a soluble Pb salt such as the ...
22-10-2019 at 13:30
by: S.C. Wack
Manganates... not PERmanganates
[rquote=352128&tid=32472&author=Texium (zts16)]I was thinking that allowing a basic solution ...
20-10-2019 at 14:35
by: S.C. Wack
Where to get cheap TLC plates?
[rquote=624657&tid=154196&author=Carbon8]The Home Scientist 024 - Making thin-layer chromato ...
19-10-2019 at 18:23
by: S.C. Wack
Should 99.99% mercury contain slag? [Update from seller]
Because HCl isn't an oxidizer or a better solvent. In the sphygmomanometer thread I gave a method th ...
19-10-2019 at 11:51
by: S.C. Wack
Activated manganese dioxide from batteries?
Speaking of knowing your Mn chemistry, I'm not sure that NaOH isn't detrimental in this case. My (pe ...
16-10-2019 at 13:56
by: S.C. Wack
methylamine from formaldehyde and NH4Cl won't complete
The identity of the gas is determined easily enough with Ba or Ca salts or a CO detector. My predict ...
16-10-2019 at 13:35
by: S.C. Wack
Activated manganese dioxide from batteries?
[rquote=624266&tid=154160&author=rockyit98]i made pure MnO2 from USED D size batterys[/rquot ...
13-10-2019 at 19:45
by: S.C. Wack
Activated manganese dioxide from batteries?
[rquote=624259&tid=154160&author=j_sum1]To my knowledge, KMnO4 has proved very challenging f ...
12-10-2019 at 14:31
by: S.C. Wack
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