Product Name

  • Name

    MES monohydrate

  • EINECS 224-632-3
  • CAS No. 145224-94-8
  • Density 1.349 g/cm3
  • Solubility water: 0.5 M at 20 °C, clear
  • Melting Point > 300 °C(lit.)
  • Formula C6H13NO4S.H2O
  • Boiling Point 460.9 °C at 760 mmHg
  • Molecular Weight 213.25
  • Flash Point 232.5 °C
  • Transport Information
  • Appearance white crystalline powder
  • Safety 26-36-37/39
  • Risk Codes 36/37/38
  • Molecular Structure Molecular Structure of 145224-94-8 (MES monohydrate)
  • Hazard Symbols IrritantXi
  • Synonyms 4-Morpholineethanesulfonicacid, monohydrate (9CI);2-(N-Morpholino)ethanesulfonic acid monohydrate;
  • PSA 84.45000
  • LogP 0.16080

MES monohydrate Chemical Properties


Molecular Formula: C6H15NO5S
Molecular Weight: 213.25 g/mol
Canonical SMILES: O.OS(=O)(=O)CCN1CCOCC1
InChI: InChI=1/C6H13NO4S.H2O/c8-12(9,10)6-3-7-1-4-11-5-2-7;/h1-6H2,(H,8,9,10);1H2
Mol File: 145224-94-8.mol
EINECS: 224-632-3
Product Categories: Buffer
Nominal Mass: 213
Average Mass: 213.252
Monoisotopic Mass: 213.067093
H bond acceptors: 6 
H bond donors: 3 
Freely Rotating Bonds: 3 
Polar Surface Area: 75.22 
Flash Point: 232.5 °C
Enthalpy of Vaporization: 80.46 kJ/mol 
Boiling Point: 460.9 °C at 760 mmHg
Melting Point: >300 °C(lit.)
solubility: H2O: 0.5 M at 20 °C, clear
Merck: 14,5902
Vapour Pressure of MES monohydrate(CAS NO.145224-94-8): 5.42E-10 mmHg at 25 °C 

MES monohydrate Safety Profile

Hazard Codes: IrritantXi
Risk Statements: 36/37/38 
R36/37/38: Irritating to eyes, respiratory system and skin.
Safety Statements: 26-36-37/39 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36: Wear suitable protective clothing. 
S37/39: Wear suitable gloves and eye/face protection.
WGK Germany of MES monohydrate(CAS NO.145224-94-8): 3

MES monohydrate Specification

 MES monohydrate (CAS NO.145224-94-8), its Synonyms are  Mes hydrate ; 4-Morpholineethanesulfonic acid monohydrate; 4-Morpholineethanesulfonic acid hydrate ; 2-(N-Morpholino)ethanesulfonic acid hydrate ; 2-(N-Morpholino)ethanesulfonic acid, monohydrate ; 2-Morpholineethanesulfonic acid monohydrate ; Morpholineethane sulfonic acid monohydrate  . It is white crystalline powder.

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