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Chemistry Forums for Students => Organic Chemistry Forum => Topic started by: sravan on February 15, 2019, 01:20:20 AM

Title: 33% HBr in Acetic acid procedure
Post by: sravan on February 15, 2019, 01:20:20 AM

Hi there

I am in urgent need of 33% HBr in acetic acid for a reaction (not 48% HBr in water). I want to prepare on my won using HBr and AcOH in lab, as i don't have time to wait from commercial sources.

Thanks!!

Title: Re: 33% HBr in Acetic acid procedure
Post by: rolnor on February 17, 2019, 10:45:05 AM

I would drip conc. HBr (aq) on P2O5 and bubble the formed HBr-gas into cold HOAc.

Title: Re: 33% HBr in Acetic acid procedure
Post by: zarhym on February 17, 2019, 10:53:21 PM

Quote from: rolnor on February 17, 2019, 10:45:05 AM

I would drip conc. HBr (aq) on P2O5 and bubble the formed HBr-gas into cold HOAc.

I will add an additional HBr absorption device to absorb excess gas.