Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Thermodynamic Properties of Two Gaseous Halogenated Ethers from Speed-of-Sound Measurements: Difluoromethoxy-Difluoromethane and 2-Difluoromethoxy- 1,1,1-Trifluoroethane.
Author Gillis, K. A. ;
CORP Author National Inst. of Standards and Technology (CSTL), Gaithersburg, MD. Thermophysics Div.;Department of the Navy, Washington, DC.;Environmental Protection Agency, Washington, DC.
Publisher 1994
Year Published 1994
Report Number N000249OMP33493 ;DW13935108-01-0;
Stock Number PB96-102413
Additional Subjects Thermodynamic properties ; Halohydrocarbons ; Ethers ; Gases ; Acoustic velocity ; Specific heat ; Ideal gas ; Virial coefficients ; Intermolecular forces ; Reprints ; Difluoromethoxy-difluoromethane ; 2-Difluoromethoxy- 1-1-1-trifluoroethane
Library Call Number Additional Info Location Last
NTIS  PB96-102413 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 02/29/1996
Collation 27p
The authors present measurements of the speed of sound in gaseous difluoromethoxy-difluoromethane (CHF2-O-CHF2) and 2-difluoromethoxy- 1,1,1-trifluoroethane (CF3-CH2-O-CHF2). These measurements were performed in an all-metal apparatus between 255 and 384 K. The authors have obtained ideal-gas heat capacities and second acoustic virial coefficients from analysis of these measurements. Two methods of correlating the second acoustic virial coefficients, a squarewell model of the intermolecular interaction and a function due to Pitzer and Curl, are presented.