(2H4)methane
- Formula: CD4
- Molecular weight: 20.0671
- CAS Registry Number: 558-20-3
- Information on this page:
- Other data available:
- Data at other public NIST sites:
- Options:
Data at NIST subscription sites:
NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.
Phase change data
Go To: Top, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Tfus | 89.780 | K | N/A | Clusius and Popp, 1940 | Uncertainty assigned by TRC = 0.05 K |
| Quantity | Value | Units | Method | Reference | Comment |
| Ttriple | 89.780 | K | N/A | Colwell, Gill, et al., 1963 | Uncertainty assigned by TRC = 0.001 K; Triple point measured in calorimeter with Pt resistance thermometer calibrated against vapor pressure of oxygen. |
| Ttriple | 89.79 | K | N/A | Armstrong, Brickwedde, et al., 1953 | Uncertainty assigned by TRC = 0.02 K |
| Ttriple | 89.78 | K | N/A | Clusius and Weigand, 1940 | Uncertainty assigned by TRC = 0.2 K; see property X for dP/dT for c-l equil. |
| Ttriple | 89.3 | K | N/A | Clusius, Popp, et al., 1937 | Uncertainty assigned by TRC = 0.6 K |
| Quantity | Value | Units | Method | Reference | Comment |
| Ptriple | 0.1059 | bar | N/A | Colwell, Gill, et al., 1963 | Uncertainty assigned by TRC = 0.000067 bar; Triple point measured in calorimeter with Pt resistance thermometer calibrated against vapor pressure of oxygen. |
| Ptriple | 0.1054 | bar | N/A | Armstrong, Brickwedde, et al., 1953 | Uncertainty assigned by TRC = 0.0005 bar |
| Ptriple | 0.105 | bar | N/A | Clusius, Popp, et al., 1937 | Uncertainty assigned by TRC = 0.001 bar |
| Quantity | Value | Units | Method | Reference | Comment |
| Tc | 189.2 | K | N/A | Grigor and Steele, 1968 | Uncertainty assigned by TRC = 0.17 K |
| Quantity | Value | Units | Method | Reference | Comment |
| Pc | 46.60 | bar | N/A | Grigor and Steele, 1968 | Uncertainty assigned by TRC = 0.1823 bar |
| Quantity | Value | Units | Method | Reference | Comment |
| ρc | 10.19 | mol/l | N/A | Grigor and Steele, 1968 | Uncertainty assigned by TRC = 0.04 mol/l; ~ |
References
Go To: Top, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Clusius and Popp, 1940
Clusius, K.; Popp, L.,
The molar heats, melting heats and heats of transformation of the condensed gases cd(4) and ch(3)d,
Z. Phys. Chem., Abt. B, 1940, 46, 63. [all data]
Colwell, Gill, et al., 1963
Colwell, J.H.; Gill, E.K.; Morrison, J.A.,
Thermodynamic properties of CH4 and CD4. interpretation of the properties of the solids.,
J. Chem. Phys., 1963, 39, 635-53. [all data]
Armstrong, Brickwedde, et al., 1953
Armstrong, G.T.; Brickwedde, F.G.; Scott, R.B.,
The Vapor Pressure of the Deuteromethanes,
J. Chem. Phys., 1953, 21, 1297. [all data]
Clusius and Weigand, 1940
Clusius, K.; Weigand, K.,
Melting Curves of the Gases A, Kr, Xe, CH4, CH3D, CD4, C2H4, C2H6, COS, and PH3 to 200 Atmospheres Pressure. The Chane of Volume on Melting,
Z. Phys. Chem., Abt. B, 1940, 46, 1-37. [all data]
Clusius, Popp, et al., 1937
Clusius, K.; Popp, L.; Frank, A.,
Physica (Amsterdam), 1937, 4, 1105. [all data]
Grigor and Steele, 1968
Grigor, A.F.; Steele, W.A.,
Physical properties of fluid ch(4) and cd(4): experimental,
J. Chem. Phys., 1968, 48, 1032-1037. [all data]
Notes
Go To: Top, Phase change data, References
- Symbols used in this document:
Pc Critical pressure Ptriple Triple point pressure Tc Critical temperature Tfus Fusion (melting) point Ttriple Triple point temperature ρc Critical density - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
- The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
- Customer support for NIST Standard Reference Data products.