Attention:

Certain features of Sigma-Aldrich.com will be down for maintenance the evening of Friday August 18th starting at 8:00 pm CDT until Saturday August 19th at 12:01 pm CDT.   Please note that you still have telephone and email access to our local offices. We apologize for any inconvenience.

Biological Buffers

MES Sodium Salt

 MES Sodium Salt Specification Comparison PDF Printer friendly PDF version (266 Kb) FAQs and Live Chat Banner Image


Sigma-Aldrich® MES Sodium Salt Physical Properties
Synonyms     2-(N-Morpholino)ethanesulfonic acid sodium salt
    4-Morpholineethanesulfonic acid sodium salt
MES Sodium Salt Image
Molecular Formula C6H12NNaO4S Beilstein Registry 3765682 Useful pH range 5.5 - 6.7
Molecular Weight 217.22 MDL Number MFCD00065473 pKa (at 25) 6.1
CAS Number 71119-23-8 EG/EC Number 275-203-2  
Sigma-Aldrich MES Sodium Salt Specifications Comparison
  M3885 M5057 M3058
Grade ≥99% (titration) BioReagent, ≥99% (titration) BioReagent, for cell culture, for molecular biology
Purity ≥99% ≥99% ≥99%
Reagent Testing
  M3885 M5057 M3058
Enhanced Quality
Profile Buffers
X X X
260NM   <0.05 <0.05
280NM   <0.03 <0.03
290NM ≤0.1 ≤0.1 ≤0.1
IR   X X
pH   8.9 - 10.1 8.9 - 10.1
Karl Fischer ≤8% ≤8% ≤8%
Life Science Testing
  M3885 M5057 M3058
Synthetic   X  
Endotoxin     ≤0.1 eu/mg
SPC     ≤100 cfu/g
Cell test     X
RNAse     X
DNAse     X
Nickase     X
Protease     X
Lead(Pb) ≤0.0005% ≤0.0005% ≤0.0005%
 
back to top
back to Biological Buffers