Order No. Quantity
A1074,0100 100 g
A1074,0250 250 g
A1074,0500 500 g
A1074,1000 1 kg

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Specification

Specification Download specification (PDF)
Synonym 2-Morpholinoethanesulfonic Acid 
state of matter Solid 
useful pH range pH 5.5 - 6.7 
pKa (20°C) 6.15 
Formula C6H13NO4S · H2
M 213.25 g/mol 
CAS-No.: 145224-94-8 
HS-No.: 29349990 
EC-No.: 224-632-3 
Storage: RT 
LGK: 10 - 13 
Disposal:
WGK:
Specification  
Assay (titr.) min. 99 % 
pH (1 %; H2O; 25°C) 2.5 - 4.0 
Heavy metals (as Pb) max. 0.001 % 
Loss on drying max. 9.5 %  
Chloride max. 0.01 % 
Sulfate max. 0.05 % 
A (1 cm/0.1 M in H2O)  
260 nm max. 0.05 
280 nm max. 0.02 

Literature

Literature
  (1)  Good, N.E. et al. (1966) Biochemistry 5, 467-477
Hydrogen ion buffers for biological research.
  (2)  Good, N.E. & Izawa, S. (1972) Methods Enzymol. 24, 53-68
Hydrogen ion buffers.
  (3)  Ferguson, W.J. et al. (1980) Anal. Biochem. 104, 300-310
Hydrogen ion buffers for biological research.

Comment

Comment
MES does not interfere with the Folin protein assay. MES partialy decomposes, when autoclaved in the presence of glucose. MES is component of e. g. the DNase buffer (10 mM MES, pH 6 in 0.1 M NaCl; 5 mM MgCl2; 2 mM CaCl2).