NIST Temperature Scale Database (SRD 60), Version 3.0
Fixed Points Associated with a Selected Reference:
Reference:
Tillner-Roth, R. and Baehr, H.D., "An International Standard Formulation of the Thermodynamic Properties of 1,1,1,2-Tetrafluoroethane (HFC-134a) for Temperatures from 170 K to 455 K at Pressures up to 70 MPa," J. Phys. Chem. Ref. Data, 23:657-729, 1994. (DOI:) (1994)Instruction:
Substance | Transition | T90 (K)
| u(T90) (mK) | T-T90 (mK) | u(T-T90) (mK) | u(T90) (K)
| Eval |
|---|---|---|---|---|---|---|---|
| 1,1,1,2-Tetrafluoroethane | BP | 247.076 | 0.002 | 0.002 | |||
| 1,1,1,2-Tetrafluoroethane | TP | 169.85 | na | na |