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brown color in precious metal solution?
It's a bit late, I couldn't sleep but a quick reply. I send PMs 13 and 24 februari, maybe you have n ... |
27-2-2010 at 19:09
by: Jor |
brown color in precious metal solution?
I added some NaClO solution to the filtrate and some more red precitipate formed, the ammonium hexac ... |
27-2-2010 at 15:25
by: Jor |
brown color in precious metal solution?
Previous time I added only 4g of ammonium chloride, and the solution was still reddish. After adding ... |
27-2-2010 at 07:44
by: Jor |
brown color in precious metal solution?
Both Fleaker and GC thank you very much for the help. I'm will go your way from here with my problem ... |
18-2-2010 at 03:37
by: Jor |
getting mercury salts out of vacuum glassware
[rquote=172087&tid=13293&author=chemrox]Nitric seems to be working. The residue was white. ... |
17-2-2010 at 13:34
by: Jor |
brown color in precious metal solution?
I did get them from someone I know.
What would be a qualitive test for mercury in this case, cons ... |
17-2-2010 at 12:23
by: Jor |
Ozonelabs-Synthesis of Tetrahydrobenzodipyran
Amazing synthesis. how did you transfer the n-butyllithium?
I know that t-butyllithium catches fir ... |
17-2-2010 at 10:02
by: Jor |
brown color in precious metal solution?
In that case I think I should use bromine, as no NBr3 exists, at least at RT.
I think this does not ... |
17-2-2010 at 08:57
by: Jor |
brown color in precious metal solution?
I had some dental fillings, and I dissolved them, boiled away 3 times with 6M HCl and diluted with d ... |
17-2-2010 at 08:04
by: Jor |
(Re)drying CaCl2?
I use an old stainless steel cooking pan for drying my CaCl2. The technical stuff contains much wate ... |
13-2-2010 at 17:42
by: Jor |
Easy to make aromatic esters
How did you purify the ester? I would think you should wash the organic layer with sat. NaHCO3-solut ... |
13-2-2010 at 17:35
by: Jor |
must haves for home lab setups?
What do you want to explore? Organic, inorganic, analytic, etc. |
13-2-2010 at 17:30
by: Jor |
Ceric ammonium nitrate- uses and synthesis
Wow, very nice of it indeed CAN! This is a nice way to make this material, although it is not THAT e ... |
13-2-2010 at 14:59
by: Jor |
Cleaning sodium metal?
Why don't you melt the entire batch under parrafin (or xylene as it is done usually, but this is fla ... |
8-2-2010 at 03:40
by: Jor |
Bad days in the lab or with glassware?
Zinc powder is more effective than sulfur. You COULD use the vaccuum cleaner, although this is gener ... |
7-2-2010 at 10:52
by: Jor |
removing trace copper impurities from AgNO3
Well it seems there was only copper nitrate on the surface of the crystal layer, it was a really sma ... |
7-2-2010 at 10:15
by: Jor |
Preparation of cyanides
Correction that was ScienceGeek. My mistake  |
7-2-2010 at 03:37
by: Jor |
Preparation of cyanides
Ofcourse it is a dangerous chemical, but with care it can be used safely. The bookkeeping of the amo ... |
6-2-2010 at 19:51
by: Jor |
removing trace copper impurities from AgNO3
[rquote=171305&tid=13377&author=Myfanwy]adding sodium hydroxide will form insoluble Ag2O and ... |
6-2-2010 at 18:08
by: Jor |
Simple Question -- Obtaining Pyrotechnic Supplies
[rquote=170975&tid=13346&author=Rich_Insane]Safety? I've been working with smoke mixtures fo ... |
6-2-2010 at 16:52
by: Jor |
removing trace copper impurities from AgNO3
Well recently I bought a 1 oz silver bar, to make a good amount of silver nitrate, but this was stol ... |
6-2-2010 at 16:41
by: Jor |
copper mirror
If anyone is interested, this is a very nice experiment.
First clean a test tube with boiling nit ... |
25-1-2010 at 04:05
by: Jor |
Extraction of Mn2O7 using CCl4?
Yes, I know how dangerous it is, I already read NERV's story on this.
As soon as the H2SO4 was ad ... |
25-1-2010 at 02:23
by: Jor |
Science project prompts SD school evacuation
[rquote=169872&tid=13268&author=aonomus]Sadly I don't know ssdd.
The recent news of http: ... |
23-1-2010 at 17:04
by: Jor |
Ozonelabs- Synthesis of 1,4-Bis(3-chloropropoxy)benzene
So what do you want to make with this compound? 
Not sure, but aren't compounds like these (hal ... |
23-1-2010 at 16:36
by: Jor |
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