Properties of aqueous methanesulfonic acid: complex index of refraction and surface tension.
The complex index of refraction of aqueous methanesulfonic acid (MSA) at room temperature and at concentrations of 1-70 wt. % is presented. The complex index of refraction is obtained in the entire wave-number region from the mid infrared to the ultraviolet-visible regions. An analysis of the infrared spectra reveals a single absorption band, which makes it possible to identify MSA in aqueous H2SO4. The surface tension of 1-99-wt. % aqueous MSA from room temperature to approximately 263 K, depending on the concentration of MSA, is reported. A polynomial parameterization of the surface tension in terms of acid weight fraction and temperature is presented.
Myhre
Cathrine E Lund
CE
Department of Chemistry, University of Oslo, PO Box 1033 Blindern, N-0372 Oslo, Norway.
D'Anna
Barbara
B
Nicolaisen
Flemming M
FM
Nielsen
Claus J
CJ