NIST Temperature Scale Database (SRD 60), Version 3.0

Fixed Points Associated with a Selected Reference:

Temperature Scale Points
All Fixed Points

Reference:

Friend, D.G.; Ely, J.F.; Ingham, H., Thermophysical Properties of Methane, J. Phys. Chem. Ref. Data, 1989, 18, 2, 583-638, (DOI:) (1989)

Substance
 
Transition
 
T90 (K)
 
u(T90)
(mK)
 
T-T90
(mK)
 
u(T-T90)
(mK)
 
u(T90) (K)
 
Eval
 
Methane TP 90.6934 0.0003 0.0003