Contents - Index




Propylene Glycol (C3H8O2) also known as 1,2-propanediol with CAS# 57-55-6 has a molar mass of 76.094 kg/kmol.  Thermodynamic property data for pure propylene glycol (no water) are provided for this substance using the Fundamental Equation of State developed by 


Tim Eisenbach, Christian Scholz, Roland Span, Diego Cristancho, Eric Lemmon, and Monika Thol

"Speed-of-Sound Measurements and a Fundamental Equation of State for Propylene Glycol"

Journal of Physical and Chemical Reference Data, Vol 50, Issue 2 June, 2021

doi 10.1063/5.0050021


The equation of state is applicable from the triple point (242.8 K) to 680 K at pressures up to 350 MPa.


Viscosity information is from:


Danai Velliadou, Konstantinos D. Antoniadis, Marc J. Assael & Marcia L. Huber 

"Reference Correlation for the Viscosity of Propane-1,2-diol (Propylene Glycol) from the Triple Point to 452 K and up to 245 MPa"

International Journal of Thermophysics, volume 43, Article number: 42 (2022)


Thermal conductivity and surface tension information are provided from:


Yaws, Carl L., ed. Chemical Properties Handbook. New York: McGraw-Hill, 1999.



Fluid Property Information