Lion850
National Hazard
Posts: 514
Registered: 7-10-2019
Location: Australia
Member Is Offline
Mood: Great
|
|
Attempt to make antimony thioiodide
Atomistry describes antimony thioiodide SbSI, following this link:
http://antimony.atomistry.com/antimony_thioiodide.html
I tried to make this salt going by the equation:
SbI3 + Sb2S3 = 3SbSI
- 1g SbI3 (made some 10 months ago but seemed to keep well) and 0.9g Sb2S3 (made a few days ago) grinded together in a mortar and then transferred in
a small crucible. This should have been an excess of Sb2S3; I dont trust my scale completely when it gets to decimals of a gram! Photo below of the
crucible prior to heating.
- Crucible placed in a sand bath with lid on, sand heated to around 150C.
- After some 10 minutes at this temperature there seemed to be no reaction.
- Sand heated to max for my hotplate - indicated sand temperature around 290C. Maintained for 30 minutes.
- Lift the lid of the crucible - purple smoke! Replace lid and allow to cool slowly.
- Once cool, remove lid and see many wafer thin red plates on the bottom of the lid; photo below.
- Crucible had more of the red crystals deposited on the sides plus some dark material in the bottom; covered by more crystals. Photo below. Maybe the
reaction was still ongoing when I switched off the heat.
- Scrape all the crystals into a small pile. When powdered, the color is darker red.
Recovery was 1.2g of red crystals.
If anyone knows SbSI, is this what it looks like? Before I try some tests, I thought to wait to hear the feedback from members.
|
|
|
woelen
Super Administrator
Posts: 7977
Registered: 20-8-2005
Location: Netherlands
Member Is Offline
Mood: interested
|
|
I'm not sure, but it could also just be SbI3. Hard to tell from pictures alone. I think you really need to test the material, but how it is tested is
something I do not know. I never read about SbSI.
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
