Absolute 2-Propanol

91% isopropyl alcohol (2-propanol) is dehydrated by combining with sodium hydroxide,removing the aqueous layer formed, and then distilling. The result is then refluxed over sodium and distilled under nitrogen. The dry IPA is useful in moisture sensitive reactions and many times can be substituted for EtOH in extractions .

Absolute 2-Propanol

Be careful with sodium metal.

Category:

Education

Tags:

• Chemistry
• Experiment
• Distillation
• 2-Propanol
• Isopropyl
• Alcohol
• Refluxing
• Over
• Sodium
• Na
• Solvent
• Still
• Synthesis
• Purification

[KevinByrne2]

How did you determine the purity of your isopropyl alcohol? B.P. ?

[ytmachx]

@KevinByrne2 I didn't. I started with 91%. The assumption is that the 9% water is removed. The 2-propanol was pure enough for the Al(O-i-Pr)3.

[hustal69]

@ytmachx how much will cost all the lab equipment like you have to distil IPA?

[ytmachx]

@hustal69 100's of $

[tiagonyl]

Very nice lab dude!

Later!

[ytmachx]

@tiagonyl Thanks bro.

[hkparker]

very nice, i love seeing more organic synth and purifications on youtube, keep it up

[megafeltch]

nice, i really like your channel.

[g3ov4n12]

My reagent grade says it contains 0.2% H2O. So in 1L there is 2mL of water, there is a way to take that water out? Do you think the sodium distillation in N2 will work? I do a research and plan to work with tiny quantities of reagents with excess of solvent, i need absolute dry IPA. You can PM me if you like to.

[ytmachx]

@paopaomanalansan I am not using double condensers in this video.

[paopaomanalansan]

Why did you double your condensers?

[bass109]

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