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Preparation of cyanides
One approach which I saw appeared to work:
To a cold saturated solution of KOH was added K4Fe( ... |
23-2-2009 at 07:44
by: densest |
Phosphorus Chlorides
I was able to download 3 pdfs composed of scanned images. Where should I put them so people who can' ... |
22-2-2009 at 18:49
by: densest |
Salting out Caffeine
Thanks for the clarification - I'll back-pedal and agree that what I meant to say was the ratios Cof ... |
19-2-2009 at 19:56
by: densest |
Salting out Caffeine
One more detail about tea - the tips of the young leaves have the highest alkaloid content. Unfortun ... |
18-2-2009 at 20:09
by: densest |
Salting out Caffeine
A quick clarification: black (also called red by Chinese speakers) tea is produced from green tea by ... |
18-2-2009 at 20:06
by: densest |
Antimony analog of Paris Green?
Thanks to you both! I mistyped - acetoarsenate is what I meant. Alchemists were fascinated by antimo ... |
7-2-2009 at 09:50
by: densest |
Antimony analog of Paris Green?
Supposedly (I've not seen a comparison) the best [b]blue[/b] colors for fireworks come from using Pa ... |
6-2-2009 at 18:16
by: densest |
mercury
Ummmmmmm..... mercury is quite hard to use "responsibly" without some pretty elaborate equipment. It ... |
4-2-2009 at 21:20
by: densest |
gas regulator needed for propane tank
A welding supply store will sell you a propane (or acetylene) regulator which is designed to supply ... |
4-2-2009 at 21:09
by: densest |
Interfacing 80's UV VIS
It's possible that piracetam's machine can run in either mode, but the round connector is the one us ... |
24-1-2009 at 09:10
by: densest |
Interfacing 80's UV VIS
It's an Appletalk port. 230Kb - no wonder you couldn't see it. There are commercial and homebuilt co ... |
23-1-2009 at 14:59
by: densest |
Picoammeter
Can you post some pictures? Or some of the text like a manufacturer's name and model number, the lab ... |
19-1-2009 at 09:52
by: densest |
Interfacing 80's UV VIS
Well, J7 and J8 are your I/O connectors - but it's set up as RS-423, a differential signal (nominall ... |
18-1-2009 at 22:24
by: densest |
Interfacing 80's UV VIS
hmmm.... there is a term for reverse-engineering old computerized equipment: "necrocomputing" 
... |
16-1-2009 at 18:29
by: densest |
Birkeland-Eyde reactor for making nitric acid.
[quote][i]Originally posted by 12AX7[/i]
BTW, once you heat up ceramic enough, it conducts. How mu ... |
29-10-2007 at 15:43
by: densest |
Birkeland-Eyde reactor for making nitric acid.
A random thought about some variant ways to get air enriched with oxygen up to 2000C or so. Electric ... |
28-10-2007 at 22:59
by: densest |
AC power supply for experiments
If I might break in here - you really want to understand the magnetics in your transformers. The co ... |
9-8-2006 at 22:22
by: densest |
Gallic acid from trees
@DeAdFX:
IMnsHO, if you want to make pyrotechnic whistles, salicylates, benzoates, and terephthal ... |
14-5-2006 at 15:12
by: densest |
Glyme
The following seems plausible:
ethylene glycol monomethyl ether
ethylene glycol monobutyl ether
a ... |
8-5-2006 at 14:10
by: densest |
gallic acid and whistle composition
One thing to watch out for: gallic acid absorbs oxygen at the slightest provocation. The quoted ext ... |
8-5-2006 at 13:49
by: densest |
Preparation of elemental phosphorus
I'm going to live up to my name - I don't understand how Mg can reduce Na or K. The enthalpy of for ... |
31-3-2006 at 18:34
by: densest |
Preparation of elemental phosphorus
If Na glass would get reduced, maybe K2CO3 would make a good flux. MP circa 1000C is a lot better th ... |
19-3-2006 at 20:59
by: densest |
Capsaicin extraction and isolation
There's also a crude but effective extraction procedure: vaporize the capsaicin at 220C in hot oil. ... |
16-3-2006 at 22:30
by: densest |
Capsaicin extraction and isolation
A long long time ago on USENET the subject of capsaicin came up. According to a neurobiologist who ... |
16-3-2006 at 18:33
by: densest |
Preparation of elemental phosphorus
[quote][i]Originally posted by garage chemist[/i]
Yes, the reaction of calcium phosphate with Mg is ... |
16-3-2006 at 17:53
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