Sciencemadness Discussion Board

Seperation of isoamyl nitrite and isoamyl alcohol from poppers

Chemist1357 - 11-12-2022 at 06:09

Obtaining isoamyl nitrite is pretty hard but i've found them to be in a mix with isoamyl alcohol in poppers. Given that they are both insoluble in water how would one go about separating the two? Any solvents I could use to do a liquid separation? Distillation might lead to decomposition as it is sensitive to light and heat.



[Edited on 11-12-2022 by Chemist1357]

[Edited on 11-12-2022 by Chemist1357]

Antigua - 11-12-2022 at 06:18

Maybe react that mixture with NaNO2/HCl to convert all isoamyl alcohol to isoamyl nitrite and distill?

Chemist1357 - 11-12-2022 at 06:22

Quote: Originally posted by Antigua  
Maybe react that mixture with NaNO2/HCl to convert all isoamyl alcohol to isoamyl nitrite and distill?


Unfortunately I can't get sodium nitrite.

Tsjerk - 11-12-2022 at 07:01

I didn't know they mixed the two in poppers, but you could react with NaOH to hydrolyze the nitrite to the alcohol and extract the alcohol.

Chemist1357 - 11-12-2022 at 07:58

Quote: Originally posted by Tsjerk  
I didn't know they mixed the two in poppers, but you could react with NaOH to hydrolyze the nitrite to the alcohol and extract the alcohol.


Thanks but I am trying to obtain isoamyl nitrite in the first place, the isoamyl alcohol is what I don't want.

blogfast25 - 11-12-2022 at 09:06

Quote: Originally posted by Chemist1357  
Distillation might lead to decomposition as it is sensitive to light and heat.


How about (mild) vacuum distillation?

Uxleumas - 21-1-2024 at 13:37

Quote: Originally posted by Chemist1357  
Given that they are both insoluble in water how would one go about separating the two?


[Edited on 11-12-2022 by Chemist1357]

[Edited on 11-12-2022 by Chemist1357]


Isoamyl alcohol is actually relatively soluble in water at 2.8 grams / 100 ml of water. Note that after washing out the alcohol with water the isoamyl nitrite may be wet and need drying with MgSO4 or CaO. (Make sure to filter out the solids after drying because CaO will slowly react with the alkyl nitrite to form Ca(NO2)2 and the alcohol.)