Hilski
Hazard to Others
Posts: 197
Registered: 13-9-2006
Member Is Offline
Mood: No Mood
|
|
Amalgamation with mercuric iodide
Has anyone ever used HgI2 for amalgamating aluminum? I'm trying to find out how well this compound works compared to HgCl2, or Hg2Cl2 (never actually
used that one because everyone has always said it wasn't very good for Al/Hg). Apparently it is practically insoluble at 6mg/100ml, and this makes me
wonder if it would work for the stated purpose. Of course I will probably try it anyway since it's so easy to make, but I though I would try to get
some input here first.
Thanks
|
|
|
guy
National Hazard
Posts: 982
Registered: 14-4-2004
Location: California, USA
Member Is Offline
Mood: Catalytic!
|
|
i have never done it, but I was wondering, coincidentally toady, how the mercuric chloride gets past the oxide layer?
|
|
|
UnintentionalChaos
International Hazard
Posts: 1454
Registered: 9-12-2006
Location: Mars
Member Is Offline
Mood: Nucleophilic
|
|
I barely know what I am talking about here, but could it have to with a small reaction between the aluminum oxide layer and the mercuric chloride
forming aluminum chloride and a bit of mercuric oxide which is permeable? Just thinking this because the copper compounds I've been working with have
a propensity to eat through anything metal, oxide layer or not. Copper chloride went right through stainless steel (effectively chromium oxide) and
ate holes through aluminum foil when dust was left on a piece overnight. Another accidental one was ammonium chloride eating holes through my
stainless steel bowl  It was an impurity in some MnO2 that I was sure I had gotten
pretty clean with many washings, but apparently a few small crystals survived.
Department of Redundancy Department - Now with paperwork!
'In organic synthesis, we call decomposition products "crap", however this is not a IUPAC approved nomenclature.' -Nicodem
|
|
|
Flip
Hazard to Others
Posts: 116
Registered: 7-12-2005
Member Is Offline
Mood: No Mood
|
|
HgI2 works great, but it takes a few days for the mercury to dissolve while preparing it. You'll note the discharge of the I2 color, its
distinctive. It's a little harder on the precision of your ratios, but if you plan ahead you'll save time and its hard to screw it up.
|
|
|
YT2095
International Hazard
Posts: 1091
Registered: 31-5-2003
Location: Just left of Europe and down a bit.
Member Is Offline
Mood: within Nominal Parameters
|
|
Gallium will "amalgamate" with Alu directly, perhaps you could work from there?
\"In a world full of wonders mankind has managed to invent boredom\" - Death
Twinkies don\'t have a shelf life. They have a half-life! -Caine (a friend of mine)
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
