Because of their caloric and thermal nature, speed of sound data are vital for the development of fundamental Helmholtz energy equations of state for fluids. The present work reports such data for methanol, 1-propanol, 2-propanol and 1-butanol along seven isotherms in the temperature range from 220 K to 500 K and a pressure of up to 125 MPa. The overall expanded uncertainty varies between 0.07% and 0.11% with a confidence level of 95%. The employed experiment is based on a double path length pulse-echo method with a single piezoelectric quartz crystal of 8 MHz, which is placed between two reflectors at different path-lengths. Measured speed of sound data for the four alcohols are fitted with double polynomial equations and compared with literature sources.
Compounds
#
Formula
Name
1
CH4O
methanol
2
C3H8O
propan-1-ol
3
C3H8O
propan-2-ol
4
C4H10O
butan-1-ol
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.