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An Improved Approximation for DIPPR-Based Predicting Speed of Sound in Long-Chained n-Alkanes

Postnikov E. B., Nedyalkov Y. V., Polishuk I.

Archives of Acoustics

2018

Vol. 43, No. 3

537--541

In this short communication, we revise a correlation for the saturated liquid isothermal compressibility based on the data available in DIPPR (Postnikov, 2016) which considers the molecular non-sphericity and addresses a problem of predicting speeds of sound in saturated long-chained alkanes. In addition, we correct a misprint appeared in the cited work and provide programming code used for the realisation of the proposed calculations.

Internal pressure as a function of pressure for alkanols

Zorębski E.

Molecular and Quantum Acoustics

2007

Vol. 28

319-327

Internal pressure as a function of pressure was estimated from the literature data for five chosen alkanols (ethanol, 1-pentanol, 3-pentanol, 3-methyl-3-pentanol, and 3-ethyl-3-pentanol). The data on isothermal compressibility and isobaric coefficient of thermal expansion obtained from acoustic method were used. The results shown that internal pressure can reaches a maximum for moderate pressures and then decreases more and more rapidly.

Internal Pressure as a Function of Pressure

Zorębski E.

Molecular and Quantum Acoustics

2006

Vol. 27

327-336

Internal pressure as a function of pressure was estimated from literature data. Mostly, the data on isothermal compressibility and isobaric coefficient of thermal expansion obtained from acoustic method were used. The results shown that internal pressure can reaches a maximum for moderate pressures and then decreases more and more rapidly.