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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 (Mn V and VI Redox Chemistry)
[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 |
Diethylamine Hydrochloride Synthesis
The USA product does not require any decolorizing, as noted in the relevant thread. There was nothin ... |
7-10-2019 at 16:12
by: S.C. Wack |
methylamine from formaldehyde and NH4Cl won't complete
What do you expect at 100-102C without vacuum. Refluxing until CO2 stops evolving does not increase ... |
7-10-2019 at 16:02
by: S.C. Wack |
Diethylamine Hydrochloride Synthesis
Such a recrystallization (the directions I gave in the other thread) is proven to work; the Merck ag ... |
6-10-2019 at 12:42
by: S.C. Wack |
Diethylamine Hydrochloride Synthesis
Could you not have boiled off your lime oil first? I assume that the amide is less volatile in steam ... |
30-9-2019 at 14:36
by: S.C. Wack |
Weird Question about KMnO4
BTW Noyes has the separation of the nitrobenzoic acids in English, if anyone is interested in that s ... |
29-9-2019 at 11:13
by: S.C. Wack |
Ammonium formate from Ammonium chloride
Of course it does, so it requires vacuum fractionation next. Small amounts of various cpds. are know ... |
26-9-2019 at 15:59
by: S.C. Wack |
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