ABSTRACT

Liquid densities, viscosities, orthobaric heat capacities, surface tensions, thermal conductivities, and saturated vapor pressures were measured for samples of mole fraction purity of 99.98 % HMCTS, OMCTS, and DMCPS over wide temperature ranges, by using Anton Paar densimeter, Hoeppler viscosimeter, Perkin-Elmer DSC 1B, modified bubble method, hot wire technique, and comparative ebulliometry, respectively. The experimental data were correlated and deviations or, for vapor pressure data, overall measures of data reproducibility are given.

Compounds

#	Formula	Name
1	C6H18O3Si3	hexamethylcyclotrisiloxane
2	C8H24O4Si4	octamethylcyclotetrasiloxane
3	C10H30O5Si5	decamethylcyclopentasiloxane

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	1	Molar heat capacity at constant pressure, J/K/mol ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	SDSC:UFactor:0.5	16
POMD	1	Surface tension liquid-gas, N/m ; Liquid	Temperature, K; Liquid		Liquid Gas	Maximal bubble pressure	9
POMD	1	Thermal conductivity, W/m/K ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Hot wire method	1
POMD	1	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	SPHERE:UFactor:4	11
POMD	1	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid		Liquid Gas	TWINEBU:UFactor:8	16
POMD	1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:12	11
POMD	2	Molar heat capacity at constant pressure, J/K/mol ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	SDSC:UFactor:0.5	24
POMD	2	Surface tension liquid-gas, N/m ; Liquid	Temperature, K; Liquid		Liquid Gas	Maximal bubble pressure	12
POMD	2	Thermal conductivity, W/m/K ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Hot wire method	2
POMD	2	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	SPHERE:UFactor:4	13
POMD	2	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid		Liquid Gas	TWINEBU:UFactor:8	24
POMD	2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:12	22
POMD	3	Molar heat capacity at constant pressure, J/K/mol ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	SDSC:UFactor:0.5	35
POMD	3	Surface tension liquid-gas, N/m ; Liquid	Temperature, K; Liquid		Liquid Gas	Maximal bubble pressure	12
POMD	3	Thermal conductivity, W/m/K ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Hot wire method	2
POMD	3	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	SPHERE:UFactor:4	15
POMD	3	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid		Liquid Gas	TWINEBU:UFactor:8	23
POMD	3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:12	23

Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

Selected Physicochemical Properties of Hexamethylcyclotrisiloxane, Octamethylcyclotetrasiloxane, and Decamethylcyclopentasiloxane

Palczewska-Tulinska, M.[Marcela], Oracz, P.

ABSTRACT