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Tungsten metal plus piranha solution?
I don't have an explanation, these are just my observations. If I were to guess, I'd venture to say ... |
2-11-2019 at 12:37
by: stamasd |
Tungsten metal plus piranha solution?
Okay update with some very interesting information and some calculations.
I pulled out all of the ... |
2-11-2019 at 11:29
by: stamasd |
Tungsten metal plus piranha solution?
Hmm. No pics today, but...
I spent a little time looking at the 2 flasks and I noticed something in ... |
1-11-2019 at 16:53
by: stamasd |
Tungsten metal plus piranha solution?
I have space and reagents, time however is another matter... I happen to have some time right now th ... |
31-10-2019 at 05:51
by: stamasd |
Tungsten metal plus piranha solution?
Pics from this morning.
Before:
[img]https://i.postimg.cc/MZrNvKc8/20191031-081030-BEST-before ... |
31-10-2019 at 04:34
by: stamasd |
Tungsten metal plus piranha solution?
Quick update on this after a couple of months.
I had originally set up an experiment with a 2g frag ... |
30-10-2019 at 07:23
by: stamasd |
Tungsten metal plus piranha solution?
I don't have access to 50% H2O2, the max I can get is 27%. Yes, TIG electrodes; the one I'm using is ... |
24-8-2019 at 03:00
by: stamasd |
Tungsten metal plus piranha solution?
See that's the kind of information that I could have used before starting.  ^^
What I found by m ... |
23-8-2019 at 13:07
by: stamasd |
Tungsten metal plus piranha solution?
Yes, less ammonia should work. The reaction appears to proceed vigorously enough at RT when enough p ... |
23-8-2019 at 07:19
by: stamasd |
Tungsten metal plus piranha solution?
So, lesson learned: the "basic" piranha solution can be every bit as violent as the acid one.
Thi ... |
23-8-2019 at 04:27
by: stamasd |
Tungsten metal plus piranha solution?
Next step: after a further 2h in which nothing happened, I added another 10ml H2O2 to the room tempe ... |
22-8-2019 at 12:16
by: stamasd |
How do you keep your lab notebook?
Here's what I do. I don't claim it's the best method, this is what works for me.
I use a very ad ... |
22-8-2019 at 10:38
by: stamasd |
Tungsten metal plus piranha solution?
So the latest update: i checked at 1.5h, the bubbling had stopped. The flask was still warm though n ... |
22-8-2019 at 10:21
by: stamasd |
Tungsten metal plus piranha solution?
So here's my ongoing experiment. Just started it but so far it's going very well.
2.35g piece of ... |
22-8-2019 at 08:43
by: stamasd |
Tungsten metal plus piranha solution?
Good luck! Depending on how it goes I'll prepare my own experiment tomorrow.
Also I assume you mean ... |
21-8-2019 at 18:00
by: stamasd |
Tungsten metal plus piranha solution?
Thanks for trying it. I have the chemicals too but it's night time here so I won't be able to try un ... |
21-8-2019 at 15:09
by: stamasd |
Tungsten metal plus piranha solution?
Does anyone have experience with reacting metallic tungsten with piranha solution? My ultimate goal ... |
21-8-2019 at 14:29
by: stamasd |
Notre Dame Smoke
Well the above seems to be a thermite explosion, Al and lead oxide (sold in many parts of the world ... |
8-5-2019 at 02:11
by: stamasd |
Cleaning copper oxides from Native Copper?
[rquote=605500&tid=146524&author=mayko]What about ammonia?[/rquote]
Ammonia is indeed ver ... |
7-5-2019 at 19:04
by: stamasd |
Notre Dame Smoke
I was young and stupid and mixed pyrotechnics with heavy metals. That was about 30 years ago. But I ... |
7-5-2019 at 18:53
by: stamasd |
Identification of a mystery metal
The most accurate method to quickly determine the composition of a metal piece is by spectroscopy. S ... |
7-5-2019 at 15:39
by: stamasd |
Notre Dame Smoke
Huh only found this thread now. I've been sure since the moment I first saw that yellow smoke that i ... |
7-5-2019 at 15:23
by: stamasd |
DIY Gamma Spectrometer with MCA
Just a quick update on the SiPM, I was recently able to acquire one through OnSemi. Wasn't cheap, $1 ... |
20-2-2019 at 09:12
by: stamasd |
Sea water@£60/l at Amazon
[rquote=590686&tid=134039&author=MrHomeScientist]Ah but it's not just natural sea water, it' ... |
20-2-2019 at 08:53
by: stamasd |
Reducing copper hydroxide
Another option is to use dextrose, or any substance with an aldehyde group. Cu2+ oxidizes the aldehy ... |
30-1-2019 at 03:39
by: stamasd |
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