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Compressed-liquid Density Measurements of Four Polyol Ester-Based Lubricants



Stephanie L. Outcalt


A vibrating-tube densimeter has been used to measure compressed-liquid densities of the fluids pentaerythritol tetrapentanoate (PEC5), pentaerythritol tetraheptanoate (PEC7), pentaerythritol tetranonanoate (PEC9), and a commercial lubricant, Royco 899 from 270 K to 470 K at pressures from 0.5 MPa to 50 MPa. The data have been extrapolated to atmospheric pressure and correlated with a Racket equation and the compressed-liquid density data have been correlated to Tait equations for comparison to existing literature data.
Energy and Fuels


Compressed liquid, Density, Lubricant, Polyol Ester, Vibrating-tube densimeter


Outcalt, S. (2018), Compressed-liquid Density Measurements of Four Polyol Ester-Based Lubricants, Energy and Fuels (Accessed April 21, 2024)
Created March 6, 2018, Updated June 2, 2021