Author Topic: NiCl2 Question  (Read 1184 times)

0 Members and 1 Guest are viewing this topic.

gruns

  • Guest
NiCl2 Question
« on: November 05, 2003, 08:43:00 PM »
73.9g NiO + 192.3ml 32% HCl = plate of soggy green crap that WILL NOT DRY.

I noticed that it melts into a thick, clear green liquid when heated and upon cooling crystallizes into a crusty bright green paste with a little extra neon green fluid running around...
How do I get this to a point where it can be accurately measured for subsequent reactions?

Is this NiCl2.6H2O?

[edit]
Ok.. that last little bit finally solidified, I poked it
a few times, doesn't seem to be any more fluid left...
Tastes like green apple jolly ranchers...


politoxicomania

  • Guest
Obvious
« Reply #1 on: November 06, 2003, 10:13:00 AM »
Yes it could be your produkt. NiCl2*H2O is indeed green while NiCl2 anhydrous is yellow.
recrystallize it from water 2 or 3 times till it ll be pure.

;D


gruns

  • Guest
How exactly...
« Reply #2 on: November 06, 2003, 09:27:00 PM »
How would I go about doing that?  Merely dissolve what
I have now in water then... cool the water?  Boil it off?

Dissolve then reduce the volume, cool to half-crystallized then filter?

/me aquires extreme nickel sensitivity due to lack of proper protective handware whilst experimenting.


Rhodium

  • Guest
recrystallizing nickel chloride hexahydrate
« Reply #3 on: November 07, 2003, 05:11:00 AM »
Dissolve then reduce the volume, cool to half-crystallized then filter?

Yes, but aim for at least a 80% recovery. According to "Purification of Laboratory Chemicals", 4th ed. the crystallization is to be performed from dilute (I assume ~5%) hydrochloric acid to give a pure product. I'd say that a single recrystallization is enough for most purposes.

Antibody2

  • Guest
me aquires extreme nickel sensitivity due to...
« Reply #4 on: November 09, 2003, 01:44:00 PM »
me aquires extreme nickel sensitivity due to lack of proper protective handware NiCl2 is corrosive


gruns

  • Guest
yecch
« Reply #5 on: November 10, 2003, 12:58:00 AM »
I'm not touchin' that stuff...  I'm going to make my lab
monkey do it.  And by "lab monkey" I'm not humorously
referring to some human lackey, I mean a standard rhesus
monkey.  You'd be surprised how trainable they are.


Report from Joey:

Innovation #2232
Baking a thin layer of sat. NiCl2.6H2O sol'n at 350F in
a 9"x9" square pyrex baking dish results in the flaky
yellow anhydrous form.