Morpholino ethanesulfonic acid
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Description
Odorless, white crystalline material. Morpholino ethanesulfonic acid, or MES, is used as a buffering agent commonly used in biology and biochemistry. The mid-range buffer is water soluble, is stable in most chemicals and enzymes, and does not complex with metal ions. MES has minimal absorption in the UV/Vis spectral range.
Synonyms and Related Terms
MES monohydrate; morpholino(ethanesulfonic acid); MES; 2-(N-morpholino) ethanesulfonic acid; 4-morpholineethansulfonic acid monohydrate;
Risks
- Contact may cause irritation.
- ThermoFisher: SDS
Physical and Chemical Properties
Soluble in water. pKa = 6.15
| Composition | C6H13NO4S . H20 |
|---|---|
| CAS | 4432-31-9 |
| Melting Point | ~300 C |
| Molecular Weight | mol. wt. = 213.25 |
Resources and Citations
- Richard C. Wolbers, Nanette T. Sterman, Chris Stavroudis, Notes for Workshop on New Methods in the Cleaning of Paintings, J.Paul Getty Trust, Los Angeles, 1990
- Wikipedia at http://en.wikipedia.org/wiki/MES_(buffer)