NIST Temperature Scale Database (SRD 60), Version 3.0

Fixed Points Associated with a Selected Reference:

Temperature Scale Points
All Fixed Points

Reference:

A. J. Nijman and N. J. Trappeniers, A NMR STUDY OF SOLID METHANE: THE LOW TEMPERATURE PHASE TRANSITION, Chem. Phys. Lett. 47, 188-193 (1977). (DOI:) (1977)

Substance
 
Transition
 
T90 (K)
 
u(T90)
(mK)
 
T-T90
(mK)
 
u(T-T90)
(mK)
 
u(T90) (K)
 
Eval
 
Methane a-b 20.45 0.01 0.01