Ethanesulfonic acid

Ethanesulfonic acid
Names
	IUPAC name ethanesulfonic acid
	Other names esylic acid, ethylsulfonic acid
Identifiers
CAS Number	594-45-6 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:42465 ;
ChemSpider	11178 ;
ECHA InfoCard	100.008.950
EC Number	209-843-0
PubChem CID	11668;
UNII	599310E3U2 ;
	InChI InChI=1S/C2H6O3S/c1-2-6(3,4)5/h2H2,1H3,(H,3,4,5); InChI=1S/C2H6O3S/c1-2-6(3,4)5/h2H2,1H3,(H,3,4,5) Key: CCIVGXIOQKPBKL-UHFFFAOYSA-N;
	SMILES CCS(O)(=O)=O;
Properties
Chemical formula	C2H6O3S
Molar mass	110.13 g·mol−1
Appearance	Clear brown liquid
Density	1.35 g/mL
Melting point	−17 °C (1 °F; 256 K)
Boiling point	122–123 °C (252–253 °F; 395–396 K) at 0.01mm
Solubility in water	Soluble
log P	-0.37
Acidity (pKa)	-1.68 [1]
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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	Infobox references

Ethanesulfonic acid (esylic acid) is a sulfonic acid with the chemical formula CH₃CH₂SO₃H. The conjugate base is known as ethanesulfonate or, when used in pharmaceutical formulations, as esilate.^[2]

It is a clear brown liquid.^[3]^[4]^[5]^[6]^[7]

References

↑ YK Ye & RW Stringham (2001-06-21). ""Effect of mobile phase acidic additives on enantioselectivity for phenylalanine analogs"" (PDF). J Chromatogr A.
↑ "Ethanesulfonate". ChemSpider.
↑ "FDA Substance Registration System". fdasis.nlm.nih.gov. Retrieved 2016-09-02.
↑ "Ethanesulfonic acid(594-45-6) MSDS Melting Point Boiling Point Density Storage Transport". www.chemicalbook.com. Retrieved 2016-09-03.
↑ DrugBank, ed. (2016-08-17). "Ethanesulfonic Acid". DrugBank.
↑ "Ethanesulfonic acid | C2H6O3S | ChemSpider". www.chemspider.com. Retrieved 2016-09-02.
↑ EtSO3H, pKa (water) −1.68. Tully PS. Sulfonic Acids. In: Kroschwitz, editor. Kirk-Othmer Encyclopedia of Chemical Technology. 4th Ed. Vol. 23. Wiley; New York: 1997. pp. 194. ISBN 9780471238966

External links

Ye YK, Stringham RW (2006), The effect of acidic and basic additives on the enantioseparation of basic drugs using polysaccharide-based chiral stationary phases. Chirality 18, 519-530. (PubMed:16676332)
National Center for Biotechnology Information (2005), Ethanesulfonic acid, PubChem Compound Database; CID=11668, (accessed December 23, 2016)
https://www.scbt.com/scbt/product/ethanesulfonic-acid-594-45-6
http://www.chemicalbook.com/productmsdsdetailcb5173859_en.htm

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[1] YK Ye & RW Stringham (2001-06-21). ""Effect of mobile phase acidic additives on enantioselectivity for phenylalanine analogs"" (PDF). J Chromatogr A.

[2] "Ethanesulfonate". ChemSpider.

[:0-3] "FDA Substance Registration System". fdasis.nlm.nih.gov. Retrieved 2016-09-02.

[4] "Ethanesulfonic acid(594-45-6) MSDS Melting Point Boiling Point Density Storage Transport". www.chemicalbook.com. Retrieved 2016-09-03.

[5] DrugBank, ed. (2016-08-17). "Ethanesulfonic Acid". DrugBank.

[6] "Ethanesulfonic acid | C2H6O3S | ChemSpider". www.chemspider.com. Retrieved 2016-09-02.

[7] EtSO3H, pKa (water) −1.68. Tully PS. Sulfonic Acids. In: Kroschwitz, editor. Kirk-Othmer Encyclopedia of Chemical Technology. 4th Ed. Vol. 23. Wiley; New York: 1997. pp. 194. ISBN 9780471238966