NIST, National Institute of Standards and Technology, U.S. Department of Commerce
NIST Temperature Scale Database (SRD 60), Version 3.0

Fixed Points Associated with a Selected Reference:

Temperature Scale Points
All Fixed Points

Reference:

Colwell, J.H.; Gill, E.K.; Morrison, J.A., Thermodynamic properties of CH4 and CD4. interpretation of the properties of the solids., J. Chem. Phys., 1963, 39, 635-53. (DOI:) (1963)

Substance
 
Transition
 
T90 (K)
 
u(T90)
(mK)
 
T-T90
(mK)
 
u(T-T90)
(mK)
 
u(T90) (K)
 
Eval
 
MethaneTP90.6830.0010.001