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CAS No 4432-31-9 , 2-morpholin-4-ylethanesulfonic acid

  • Name: 2-morpholin-4-ylethanesulfonic acid
  • Synonyms: 4432-31-9;2-morpholin-4-ylethanesulfonic acid;4-Morpholineethanesulfonic acid; 2-Morpholinoethanesulfonic acid; Morpholineethanesulfonic acid; 2-(N-Morpholino)ethanesulfonic acid;
  • CAS Registry Number:
  • Transport: 1kgs,
  • Melting Point: >300 °C(lit.)
  • Density: 1.349 g/cm3
  • Refractive index: 1.525
  • Water Solubility: Soluble AUTOIGNITION
  • Safety Statements: 26-36-24/25-22
  • Hazard Symbols: Xi: Irritant;
  • EINECS: 224-632-3
  • Molecular Weight: 195.23672
  • InchiKey: SXGZJKUKBWWHRA-UHFFFAOYSA-N
  • InChI: InChI=1S/C6H13NO4S/c8-12(9,10)6-3-7-1-4-11-5-2-7/h1-6H2,(H,8,9,10)
  • Risk Statements: S22;S24/25
  • Molecular Formula: C6H13NO4S
  • Molecular Structure:CAS No:4432-31-9 2-morpholin-4-ylethanesulfonic acid

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4432-31-9 MES BUFFER, ANHYDROUS

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4432-31-9 MES

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4432-31-9 2-(N-Morpholino)Ethanesulfonic Acid

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References of 2-morpholin-4-ylethanesulfonic acid
Title: MES
CAS Registry Number: 4432-31-9
CAS Name: 4-Morpholineethanesulfonic acid
Synonyms: 2-(4-morpholino)ethyl sulfonate; 2-(N-morpholino)ethanesulfonic acid
Molecular Formula: C6H13NO4S
Molecular Weight: 195.24
Percent Composition: C 36.91%, H 6.71%, N 7.17%, O 32.78%, S 16.42%
Literature References: One of the zwitterionic N-substituted aminosulfonic acids known as Good Buffers, active in the pH range 6-8. Prepn as sodium salt: S. Malkiel, J. P. Mason, J. Org. Chem. 8, 199 (1943); as acid: N. E. Good et al., Biochemistry 5, 467 (1966). Thermodynamic parameters: C. D. McGlothlin, J. Jordan, Anal. Lett. 9, 245 (1976). Acid-base properties: A. Balikungeri, Chimia 43, 13 (1989). Interference with protein determn: P. L. Lleu, G. Rebel, Anal. Biochem. 192, 215 (1991). Use as buffer: S. C. Lee et al., J. AOAC Int. 75, 395 (1992); P. J. Henney et al., Anim. Genet. 25, 363 (1994).
Properties: Colorless crystals from alcohol/water, dec >300°. Apparent pKa at 0.1M ionic: 0°, 6.38; 20°, 6.15; 37°, 5.98. At 0.1M ionic, 25.0° ±0.1°: pKa1 1.99; pKa2 6.21. D pKa/°C -0.011. Saturation at 0°: 0.65M.
pKa: pKa at 0.1M ionic: 0°, 6.38; 20°, 6.15; 37°, 5.98; pKa1 1.99; pKa2 6.21; pKa/°C -0.011
Use: Biological buffer.