mercury
- Formula: Hg
- Molecular weight: 200.59
- IUPAC Standard InChI: InChI=1S/Hg
- IUPAC Standard InChIKey: QSHDDOUJBYECFT-UHFFFAOYSA-N
- CAS Registry Number: 7439-97-6
- Chemical structure:
This structure is also available as a 2d Mol file - Permanent link for this species. Use this link for bookmarking this species for future reference.
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- Other data available:
- Data at other public NIST sites:
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- NIST Atomic Spectra Database - Levels Holdings (on physics web site)
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- Gas Phase Kinetics Database
- X-ray Photoelectron Spectroscopy Database, version 5.0
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Condensed phase thermochemistry data
Go To: Top, Phase change data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| S°liquid | 18.14 ± 0.029 | cal/mol*K | Review | Cox, Wagman, et al., 1984 | CODATA Review value |
Phase change data
Go To: Top, Condensed phase thermochemistry data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled as indicated in comments:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Tboil | 629.81 | K | N/A | Marsh, 1987 | Uncertainty assigned by TRC = 0.01 K; recommended as fixed point for thermometry; TRC |
| Tboil | 629.7 | K | N/A | Honig and Kramer, 1969 | Uncertainty assigned by TRC = 0.5 K; TRC |
| Quantity | Value | Units | Method | Reference | Comment |
| Tfus | 234.3 | K | N/A | Anonymous, 1988 | Uncertainty assigned by TRC = 0.005 K; nominal value, from the catalog; TRC |
| Tfus | 234.31 | K | N/A | Marsh, 1987 | Uncertainty assigned by TRC = 0.005 K; TRC |
| Tfus | 234.5 | K | N/A | Timmermans, 1911 | Uncertainty assigned by TRC = 0.2 K; TRC |
| Quantity | Value | Units | Method | Reference | Comment |
| Ttriple | 234.3 | K | N/A | Marsh, 1987 | Uncertainty assigned by TRC = 0.003 K; values recommended as calibration standard; TRC |
| Ttriple | 234.29 | K | N/A | Honig and Kramer, 1969 | Uncertainty assigned by TRC = 0.2 K; TRC |
| Quantity | Value | Units | Method | Reference | Comment |
| Tc | 0. | K | N/A | Menzies, 1913 | based on his observations, author doubts that Tc observed by Koninsberger (1913-170), 1275 deg C is correct; TRC |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (atm)
T = temperature (K)
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| Temperature (K) | A | B | C | Reference | Comment |
|---|---|---|---|---|---|
| 298.14 to 749.99 | 4.85196 | 3007.129 | -10.001 | Hicks, 1963 | Coefficents calculated by NIST from author's data. |
References
Go To: Top, Condensed phase thermochemistry data, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Cox, Wagman, et al., 1984
Cox, J.D.; Wagman, D.D.; Medvedev, V.A.,
CODATA Key Values for Thermodynamics, Hemisphere Publishing Corp., New York, 1984, 1. [all data]
Marsh, 1987
Marsh, K.N.,
Recommended Reference Materials for the Realization of Physicochemical Properties, Blackwell Sci. Pub., Oxford, 1987. [all data]
Honig and Kramer, 1969
Honig, R.E.; Kramer, D.A.,
Vapor pressure data for the solid and liquid elements,
RCA Rev., 1969, 1969, 285. [all data]
Anonymous, 1988
Anonymous, X.,
, NBS Spec. Publ. (U. S.) 260, 1988. [all data]
Timmermans, 1911
Timmermans, J.,
Researches on the freezing point of organic liquid compounds,
Bull. Soc. Chim. Belg., 1911, 25, 300. [all data]
Menzies, 1913
Menzies, A.W.C.,
The Critical Temperature of Mercury,
J. Am. Chem. Soc., 1913, 35, 1065. [all data]
Hicks, 1963
Hicks, W.T.,
Evaluation of Vapor-Pressure Data of Mercury, Lithium, Sodium, and Potassium,
J. Chem. Phys., 1963, 38, 8, 1873-1880, https://doi.org/10.1063/1.1733889
. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, References
- Symbols used in this document:
S°liquid Entropy of liquid at standard conditions Tboil Boiling point Tc Critical temperature Tfus Fusion (melting) point Ttriple Triple point temperature - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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