ostaur
Harmless
Posts: 9
Registered: 2-2-2006
Member Is Offline
Mood: No Mood
|
|
iron chloride
hello,
i need to know dehydratation steps of iron chloride FeCl3*6H2O
does anybody have any information about thermical decomposition of this compound
|
|
|
sparkgap
International Hazard
Posts: 1234
Registered: 16-1-2005
Location: not where you think
Member Is Offline
Mood: chaotropic
|
|
Try here.
Jeez! 
sparky (>_<
[Edited on 2-2-2006 by sparkgap]
"What's UTFSE? I keep hearing about it, but I can't be arsed to search for the answer..."
|
|
|
ostaur
Harmless
Posts: 9
Registered: 2-2-2006
Member Is Offline
Mood: No Mood
|
|
thank you for your reply and suggestion but i have almost seen the information on google site
there is no article or scientific information on what im looking for
all you find is about material safety data sheet.......
|
|
|
woelen
Super Administrator
Posts: 7977
Registered: 20-8-2005
Location: Netherlands
Member Is Offline
Mood: interested
|
|
Indeed, sometimes google is not really your friend. I also have a lot of questions, which really cannot be answered by searching on Google.
But ostaur, if you ask a question, make clear that you have put effort in searching, then people certainly are more inclined to help you.
If you heat FeCl3.6H2O, then the compound partially hydrolyses. It gives off H2O, but also HCl. What remains behind is some basic ferric
chloride/oxide/hydroxide stuff. The precise composition of the compound, which remains behind is not easy to determine, it most likely is a
non-stoiciometric compound of the form FeClxOy(OH)z, with x+y/2+z = 3. The solid remains are insoluble in water. I have tried that. It dissolves
(slowly) in dilute acid. The stronger the heating, the more difficultly the residue dissolves in acid.
|
|
|
ostaur
Harmless
Posts: 9
Registered: 2-2-2006
Member Is Offline
Mood: No Mood
|
|
i have also tried to heat FeCl3*6H2O at 200°C and it gives
according the color characteristics (brown-black) the iron chloride anhydre, but i am not sure what happens under this temperature it keeps how many
molecules of water...
for this reason i needed to know deshydration steps...
to be noted that iron chloride is very sensible to humidity et maybe in contact with air it becomes more hydrated.....
thanks a lot for your reply and i'd appreciate any other suggestion 
|
|
|
12AX7
Post Harlot
Posts: 4803
Registered: 8-3-2005
Location: oscillating
Member Is Offline
Mood: informative
|
|
As I recall it has to be dried in a stream of HCl (obviously anhydrous itself).
Else it could be prepared from the elements by passing (dry) chlorine over steel turnings until FeCl2 then FeCl3 is formed. It can probably be
refined through sublimation, although I forget if it tends to decompose to FeCl2 + Cl.
Tim
|
|
|
ostaur
Harmless
Posts: 9
Registered: 2-2-2006
Member Is Offline
Mood: No Mood
|
|
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
