Combined Low-Pressure and High-Pressure Measurements of Density and Bulk Modulus of Aviation Instrument Oil and 2-Methylbutane and Their Mixtures

James C Houck; Peter L M Heydemann

doi:10.6028/jres.075A.012

Combined Low-Pressure and High-Pressure Measurements of Density and Bulk Modulus of Aviation Instrument Oil and 2-Methylbutane and Their Mixtures

J Res Natl Bur Stand A Phys Chem. 1971 Mar-Apr;75A(2):121-127. doi: 10.6028/jres.075A.012.

Authors

James C Houck¹, Peter L M Heydemann¹

Affiliation

¹ Institute for Basic Standards, National Bureau of Standards, Washington, D.C. 20234.

Abstract

Dilatometric measurements were made on mixtures of aviation instrument oil and 2-methylbutane at low pressures. These results are eomhined with previous dilatometric and ultrasonic measurements at high pressures to give density, relative volume, and isothermal bulk modulus of the mixtures to pressures of 20 kilobars. The ratio of the adiabatic bulk modulus to isothermal bulk modulus for 2-methylbutane is also given.

Keywords: 2-methylbutane; Bulk modulus; compressibility; density; dilatometric measurements; high pressure; liquids; ultrasonics.