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

ITS-90 References for Temperature Points:

Chlorofluoro-Substituted Hydrocarbons
Year Reference Data with Ref.
2018 Lemmon, E.W., Bell, I.H., Huber, M.L., McLinden, M.O. NIST Standard Reference Database 23: Reference Fluid Thermodynamic and Transport Properties-REFPROP, Version 10.0, National Institute of Standards and Technology, Standard Reference Data Program, Gaithersburg, 2018. (No DOI)
2000 Magee, J.W., Outcalt, S.L., and Ely, J.F., "Molar Heat Capacity C(v), Vapor Pressure, and (p, rho, T) Measurements from 92 to 350 K at Pressures to 35 MPa and a New Equation of State for Chlorotrifluoromethane (R13)," Int. J. Thermophys., 21(5):1097-1121, 2000. (DOI:)
1996 Bedford, RE; Bonnier, G; Maas, H; Pavese, F, Recommended values of temperature on the International Temperature Scale of 1990 for a selected set of secondary reference points, Metrologia, 33 (1996) 133-154. (DOI:)
1986 Sakurai H., A Simple Realization of Low Temperature Fixed Points, in Temperature, Its Measurement and Control in Science and Industry (TMCSI) (Edited by L. Wang and S. Ling), Beijing, China Academic Publishers, 1986, 128-133. (No DOI)
1978 J. Ancsin, Note Concerning the Suitability of Xenon as Temperature Fixed Point, Metrologia 14, 45-46 (1978). (DOI:)
1978 J. Ancsin, Vapour pressures and triple point of neon and the influence of impurities on these propertes, Metrologia 14, (1978) 1 (DOI:)