Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

J. Phys. & Chem. Ref. Data (JPCRD)

Atomic Transition Probabilities of Sodium and Magnesium A Critical Compilation

November 14, 2018

Author(s)

Daniel E. Kelleher, Larissa Podobedova

This compilation is the first in a series of updates to Atomic Transition Probabilities, Sodium through Calcium, published in 19691. Atomic transition

Spectroscopic Data for Neutral Francium (Fr I)

November 14, 2018

Author(s)

Jean E. Sansonetti

Energy levels and hyperfine structure constants have been compiled for the sixteen longest-lived isotopes of francium (Z=87). Wavelengths with classifications

Wavelengths, Transition Probabilities, and Energy Levels for the Spectra of Potassium (K I through K XIX)

November 14, 2018

Author(s)

Jean E. Sansonetti

Energy levels, with classifications and uncertainties, have been compiled for the spectra of the neutral atom and all positive ions of potassium (Z=19)

Wavelengths, Energy Level Classifications, and Energy Levels for the Spectrum of Neutral Mercury

November 14, 2018

Author(s)

Edward B. Saloman

We have prepared a comprehensive critically evaluated compilation of the most accurate wavelength measurements for classified lines of neutral mercury (Hg I)

Atomic Transition Probabilities of Aluminum and Silicon A Critical Compilation

November 14, 2018

Author(s)

Daniel E. Kelleher, Larissa Podobedova

This compilation is the second in a series of updates to Atomic Transition Probabilities, Sodium through Calcium, published in 19691. Atomic transition

Compilation of Wavelengths, Energy Levels, and Transition Probabilities for W I and W II

November 14, 2018

Author(s)

Alexander Kramida, T Shirai

Energy levels, wavelengths, and transition probabilities of the first and second spectra of tungsten, W I and W II, have been compiled. Wavelengths of observed

Erratum: Fundamental Equation of State for Deuterium

October 29, 2018

Author(s)

Eric W. Lemmon, Ian A. Richardson, Jacob W. Leachman

Reference Correlation for the Thermal Conductivity of Ammonia from the Triple Point Temperature to 680 K and Pressures up to 80 MPa

October 25, 2018

Author(s)

S.A. Monogenidou, Marc J. Assael, Marcia L. Huber

This paper presents new wide-ranging correlation for the thermal conductivity of ammonia based on critically evaluated experimental data. The correlation is

Reference Correlations for the Thermal Conductivity of 13 Inorganic Molten Salts

September 19, 2018

Author(s)

Ch. D. Chliatzou, Marc J. Assael, K.D. Antoniadis, Marcia L. Huber, William A. Wakeham

The available experimental data for the thermal conductivity of the inorganic molten salts (KNO3, LiNO3, NaNO3, KBr, NaBr, RbBr, CsCl, KCl, LiCl, NaCl, RbCl

REFERENCE VALUES AND REFERENCE CORRELATIONS FOR THE THERMAL CONDUCTIVITY AND VISCOSITY OF FLUIDS

June 22, 2018

Author(s)

Marc J. Assael, A.E. Kalyva, S.A. Monogenidou, Marcia L. Huber, Richard A. Perkins, Daniel G. Friend, Eric F. May

In this paper reference values and reference correlations for the thermal conductivity and viscosity of pure fluids are presented. Reference values and

Reference Correlations for the Viscosity of Ammonia from the Triple Point to 725 K and up to 50 MPa

June 5, 2018

Author(s)

S.A. Monogenidou, Marc J. Assael, Marcia L. Huber

This paper presents new wide-ranging correlations for the viscosity of ammonia based on critically evaluated experimental data. The correlation is designed to

Reference Correlations for the Thermal Conductivity of n-Hexadecane from the Triple Point to 700 K and up to 50 MPa

February 6, 2018

Author(s)

S.A. Monogenidou, Marc J. Assael, Marcia L. Huber

This paper presents new wide-ranging correlations for the thermal conductivity of n-hexadecane based on critically evaluated experimental data. The correlations

Editorial: Review Articles Welcome in JPCRD

January 2, 2018

Author(s)

Allan H. Harvey, Donald R. Burgess Jr.

Editorial for J. Phys. Chem. Ref. Data describing plans for a new Review Articles section.

On the Melting Curve of Sulfur Hexafluoride

November 9, 2017

Author(s)

Allan H. Harvey

A previous correlation for the melting curve of sulfur hexafluoride (SF6) is inconsistent with the thermodynamic slope at the triple point derived from the

Reference Correlations for the Viscosity and Thermal Conductivity of n-Undecane

September 26, 2017

Author(s)

Marc J. Assael, T.B. Papalas, Marcia L. Huber

This paper presents new wide-ranging correlations for the viscosity and thermal conductivity of n-undecane based on critically evaluated experimental data. The

An Analytical Solubility Model for Nitrogen-Methane-Ethane Ternary Mixtures

August 24, 2017

Author(s)

Jason Hartwig, Peter Meyerhofer, Ralph Lorenz, Eric Lemmon

Saturn's moon Titan has surface seas of liquid hydrocarbons and a thick, cold, nitrogen atmosphere, and is a target for future exploration. Critical to the

Reference Correlations for the Thermal Conductivity of Liquid Bismuth, Cobalt, Germanium and Silicon

August 8, 2017

Author(s)

Marc J. Assael, K.D. Antoniadis, William A. Wakeham, Marcia L. Huber, H. Fukuyama

The available experimental data for the thermal conductivity of liquid bismuth, cobalt, germanium and silicon have been critically examined with the intention

Critical Evaluation of Thermodynamic Properties for Halobenzoic Acids Through Consistency Analyses for Results from Experiment and Computational Chemistry

June 14, 2017

Author(s)

Robert D. Chirico, Andrei F. Kazakov, Ala Bazyleva, Vladimir Diky, Kenneth Kroenlein, Vladimir N. Emel'yanenko, Sergey P. Verevkin

Thermodynamic properties of the twelve monohalobenzoic acids are critically evaluated through application of computational chemistry methods for the ideal-gas

Correlations for the Viscosity and Thermal Conductivity of Ethyl Fluoride (R161)

May 17, 2017

Author(s)

Ch. M. Tsolakidou, Marc J. Assael, Marcia L. Huber, Richard A. Perkins

This paper presents new wide-ranging correlations for the viscosity and thermal conductivity of ethyl fluoride (R161) based on critically evaluated experimental

Reference Correlation for the Viscosity of Carbon Dioxide

March 21, 2017

Author(s)

Arno D. Laesecke, Chris D. Muzny

A comprehensive database of experimental and computed data for the viscosity of carbon dioxide (CO2) was compiled and a new reference correlation was developed

Reference Correlation of the Thermal Conductivity of Cyclohexane from the triple point to 640 K and up to 175 MPa

February 8, 2017

Author(s)

A. Koutian, Marc J. Assael, Marcia L. Huber, Richard A. Perkins

New, wide-range reference equations for the thermal conductivity of cyclohexane as a function of temperature and density are presented. The equations are based

CODATA Recommended Values of the Fundamental Physical Constants: 2014

November 22, 2016

Author(s)

Peter J. Mohr, David B. Newell, Barry N. Taylor

This paper gives the 2014 self-consistent set of values of the constants and conversion factors of physics and chemistry recommended by the Committee on Data

Reference Correlations of the Thermal Conductivity of Ethylene and Propylene

August 9, 2016

Author(s)

A. Koutian, Marc J. Assael, Marcia L. Huber, Richard A. Perkins

New, wide-range reference equations for the thermal conductivity of ethylene and propylene as a function of temperature and density are presented. The equations

Reference Correlation of the Thermal Conductivity of Carbon Dioxide from the Triple Point to 1100 K and up to 200 MPa

February 25, 2016

Author(s)

Marcia L. Huber, E.A. Sykioti, Marc J. Assael, Richard A. Perkins

This paper contains new, representative reference equations for the thermal conductivity of carbon dioxide. The equations are based in part upon a body of

Reference Correlations of the Thermal Conductivity of Cyclopentane, iso-Pentane, and n-Pentane

August 13, 2015

Author(s)

Cristina M. Vassiliou, Marc J. Assael, Marcia L. Huber, Richard A. Perkins

New, wide range reference equations for the thermal conductivity of cyclopentane, iso-pentane and n-pentane are presented. The equations are based in part upon

Reference Correlation of the Viscosity of Toluene from the Triple Point to 675 K and up to 500 MPa

August 6, 2015

Author(s)

S. Avgeri, Marc J. Assael, Marcia L. Huber, Richard A. Perkins

This paper contains new, representative reference equations for the viscosity of toluene. The equations are based in part upon a body of experimental data that

Proceedings of the Workshop on the Determination of the Fundamental Constants

July 17, 2015

Author(s)

Donald R. Burgess Jr.

In this editorial, we will provide a brief synopsis of the proceedings of the 2015 Workshop on the Determination of the Fundamental Constants, a broad overview

An Equation of State for the Thermodynamic Properties of Cyclohexane

December 5, 2014

Author(s)

Yong Zhou, Jun Liu, Steven Penoncello, Eric Lemmon

In this work, an equation of state for cyclohexane has been developed using the Helmholtz energy as the fundamental property with independent variables of

Reference Correlation of the Thermal Conductivity of o-Xylene, m-Xylene, p-Xylene, and Ethylbenzene from the Triple Point to 700 K and Moderate Pressures

November 21, 2014

Author(s)

Sofia K. Mylona, K.D. Antoniadis, Marc J. Assael, Marcia L. Huber, Richard A. Perkins

This paper contains new, representative reference equations for the thermal conductivity of o-, m-, p- xylene and ethylbenzene. The equations are based upon a

Erratum: Reference Correlation of the Thermal Conductivity of Sulfur Hexafluoride from the Triple Point to 1000 K and up to 150 MPa [J. Phys. Chem. Ref. Data 41, 023104 (2012)]

July 14, 2014

Author(s)

Marc J. Assael, I.A. Koini, K.D. Antoniadis, Marcia L. Huber, Ilmutdin M. Abdulagatov, Richard A. Perkins

This is an erratum to J. Phys. Chem. Ref. Data 41, 023104 (2012)