michalJenco
Hazard to Self
Posts: 50
Registered: 7-2-2019
Member Is Offline
|
|
1-bromo-2-ethylhexane normal pressure distillation?
Hi fellow chemist.
I am planning on making 1-bromo-2-ethylhexane and purify it by distillation at atmospheric pressure. However, I cannot find a literature boiling point at atmospheric
pressure, only various vacuums. Does that mean the product will decompose or that atmospheric distillation is undesired?
I cannot figure out why a primary bromoalkane should decompose on distillation, but I don't want to blunder if there's something I don't know so I'd
rather ask first.
|
|
|
Fery
International Hazard
Posts: 1015
Registered: 27-8-2019
Location: Czechoslovakia
Member Is Online
|
|
https://www.lookchem.com/2-Ethylhexyl-bromide/
190,8 C at 760 mm Hg
|
|
|
michalJenco
Hazard to Self
Posts: 50
Registered: 7-2-2019
Member Is Offline
|
|
I'd already seen that value but here it is given with ±8.0 °C, which looks very much like a calculated value.
|
|
|
Pumukli
National Hazard
Posts: 705
Registered: 2-3-2014
Location: EU
Member Is Offline
Mood: No Mood
|
|
I distilled benzoic acid methyl ester at 760 mbar, bp 212 C, no problem. At least nothing obvious for an amateur. In the old days they distilled many
things at normal pressure, steam distillation was used for delicate compounds.
|
|
|
ArbuzToWoda
Hazard to Self
Posts: 98
Registered: 15-7-2020
Member Is Offline
|
|
Maybe you could use this? https://chemistry.mdma.ch/hiveboard/rhodium/equipment/nomogr...
I only stumbled upon it and it looks useful
|
|
|
Fery
International Hazard
Posts: 1015
Registered: 27-8-2019
Location: Czechoslovakia
Member Is Online
|
|
https://www.sciencemadness.org/whisper/viewthread.php?tid=15...
distilled upto 224 C at normal pressure and OK, just my old oil bath fumed like a hell, and of course air condenser used
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
