ABSTRACT

The liquid densities of HFE-7200 and HFE-7500 have been measured in the temperature range from (283 to 363) K and pressures up to 100 MPa by using a high pressure vibrating-tube densimeter. R134a has been used as a reference fluid to validate the densimeter. The uncertainty of each obtained datum was estimated, and the maximum expanded uncertainty with a level of confidence of 0.95 (k = 2) of density measurement for HFE-7200 and HFE-7500 were (0.04 and 0.03)%, respectively. The measured liquid densities were correlated with the modified Tait equation and the average absolute deviation is less than 0.03%. The isothermal compressibility and isobaric thermal expansivity were also calculated.

Compounds

#	Formula	Name
1	C6H5F9O	1-ethoxy-1,1,2,2,3,3,4,4,4-nonafluorobutane
2	C9H5F15O	2-trifluoromethyl-3-ethoxydodecafluorohexane
3	C2H2F4	1,1,1,2-tetrafluoroethane
4	C6H5F9O	nonafluoroisobutyl ethyl ether

Datasets

The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type	Compound-#	Property	Variable	Constraint	Phase	Method	#Points
POMD	2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	144
POMD	3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	32
POMD	1 4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Mass fraction - 1; Liquid	Liquid	Vibrating tube method	142

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Liquid density of HFE-7200 and HFE-7500 from T = (283 to 363) K at pressures up to 100 MPa

Fang, D.[Dan], Li, Y.[Ying], Meng, X.[Xianyang], Wu, J.[Jiangtao]

ABSTRACT