National Institute of Standards and Technology

NIST Chemistry WebBook, SRD 69

Name: Thermophysical Properties
License: https://www.nist.gov/open/copyright-fair-use-and-licensing-statements-srd-data-software-and-technical-series-publications#SRD

Thermophysical Properties of Isobutane

Please choose the units you wish to use:

Temperature Kelvin Celsius Fahrenheit Rankine

Velocity m/s ft/s mph

Viscosity µPa*s Pa*s cP lbm/ft*s

Surface tension^* N/m dyn/cm lb/ft lb/in

^*Surface tension values are only available along the saturation curve.

Choose the desired type of data:

Data type Isothermal properties Isobaric properties Isochoric properties Saturation properties — temperature increments Saturation properties — pressure increments
Please select the desired standard state convention:

Standard state convention Default for fluid Normal B.P. convention ASHRAE convention IIR convention