- Formula: H3P
- Molecular weight: 33.99758
- IUPAC Standard InChI:
- Download the identifier in a file.
- IUPAC Standard InChIKey: XYFCBTPGUUZFHI-UHFFFAOYSA-N
- CAS Registry Number: 7803-51-2
- Chemical structure:
This structure is also available as a 2d Mol file
- Other names: Trihydrogen phosphide; Hydrogen phosphide; Phosphorus trihydride; PH3; Phosphene; Phosphorus hydride; Fosforowodor; Gas-ex-B; Phosphorwasserstoff; Rcra waste number P096; UN 2199
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Phase change data
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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, Kenneth Kroenlein director
AC - William E. Acree, Jr., James S. Chickos
|Ttriple||139.41||K||N/A||Clusius and Weigand, 1940||Uncertainty assigned by TRC = 0.2 K; see property X for dP/dT for c-l equil.; TRC|
Enthalpy of vaporization
|vapH (kJ/mol)||Temperature (K)||Reference||Comment|
|14.6 ± 0.1||186.||Frank and Clusius, 1939||AC|
|14.6||185.||Stephenson and Giauque, 1937||AC|
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (bar)
T = temperature (K)
|143.8 - 185.7||4.02591||702.651||-11.065||Stull, 1947||Coefficents calculated by NIST from author's data.|
Enthalpy of sublimation
|subH (kJ/mol)||Temperature (K)||Method||Reference||Comment|
|17.2||129. - 140.||MM||Stephenson and Giauque, 1937||AC|
Go To: Top, Phase change data, Notes
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]
Frank and Clusius, 1939
Frank, A.; Clusius, K., Z. Phys. Chem. Abt. B, 1939, 42, 395. [all data]
Stephenson and Giauque, 1937
Stephenson, C.C.; Giauque, W.F., A Test of the Third Law of Thermodynamics by Means of Two Crystalline Forms of Phosphine. The Heat Capacity, Heat of Vaporization and Vapor Pressure of Phosphine. Entropy of the Gas, J. Chem. Phys., 1937, 5, 2, 149, https://doi.org/10.1063/1.1749994 . [all data]
Stull, Daniel R., Vapor Pressure of Pure Substances. Organic and Inorganic Compounds, Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022 . [all data]
Go To: Top, Phase change data, References
- Symbols used in this document:
Ttriple Triple point temperature subH Enthalpy of sublimation vapH Enthalpy of vaporization
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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