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Article #2269

Re: pKa of SDS

#2269
From: Jennifer Blanc
Date: Thu, 18 Apr 1996 00:00
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woods@mmad1.pmmp.uic.edu wrote:
> 
> Ron Tate wrote:
> >
> > woods@mmad1.pmmp.uic.edu wrote:
> > >
> > > Louis Hom wrote:
> > > >
> > > > Does anyone know the pKa of SDS (sodium dodecyl sulfate)?  I'm guessing
> > > > it's near 2 (the 2nd pKa of H2SO4), but don't know for sure.
> > > > --
> > > > _______________________________________________________________________________
> > > > Lou Hom >K '93
> > > > lhom@nature.berkeley.edu                        No method to my madness.
> > > > http://www.ocf.berkeley.edu/~lhom
> > >
> > > Isn't SDS "sodium dodecyl sulfonate" and not "sodium dodecyl sulfate"?
> >
> > No it's "sulfate"
> > --
> 
> I coulda sworn it was an ester of a sulfonic acid, not of sulfuric acid
Sulfuric acid.  AKA sodium lauryl sulfate (as found on shampoo bottles).  
As for the pKa, you'd have to check out the Sigma/Aldrich catalog 
(usually has this info) or maybe the Merck index.  It's not in the CRC.

-JBlanc
"future under construction"
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From: Jennifer Blanc <jblanc@best.com>
Subject: Re: pKa of SDS
Date: 1996/04/18
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