pKa of SDS

HIRANYA ROYCHOWDHURY hroychow at NMSU.EDU
Fri Apr 19 14:27:17 EST 1996


On Thu, 18 Apr 1996, Jennifer Blanc wrote:

> woods at mmad1.pmmp.uic.edu wrote:
> > 
> > Ron Tate wrote:
> > >
> > > woods at 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 at 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"
> 

The Merck Index says 'sulfation' and not sulfonation.   




			>>>>>>>>>>>>>>>>>>>>>>>>>>>
			  Hiranya S. Roychowdhury
   			  Plant Genetic Engineering Lab.
			  Box 3GL, NM State Univ.
			  Las Cruces, NM 88003
			  Phone: (505) 646-5785
			  hroychow at nmsu.edu
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