Phosphine

• Formula: H₃P
• Molecular weight: 33.99758
• IUPAC Standard InChI: InChI=1S/H3P/h1H3 Copy

  
• IUPAC Standard InChIKey: XYFCBTPGUUZFHI-UHFFFAOYSA-N Copy
• 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
• Permanent link for this species. Use this link for bookmarking this species for future reference.
• Information on this page:
  • Gas phase thermochemistry data
  • Phase change data
  • Henry's Law data
  • Ion clustering data
  • References
  • Notes
• Other data available:
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • Vibrational and/or electronic energy levels
• Data at other public NIST sites:
  • Gas Phase Kinetics Database
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Gas phase thermochemistry 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.

Gas Phase Heat Capacity (Shomate Equation)

C_p° = A + B*t + C*t² + D*t³ + E/t²
H° − H°_298.15= A*t + B*t²/2 + C*t³/3 + D*t⁴/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t²/2 + D*t³/3 − E/(2*t²) + G
    C_p = heat capacity (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

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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, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos

Enthalpy of vaporization

Antoine Equation Parameters

log₁₀(P) = A − (B / (T + C))
    P = vapor pressure (bar)
    T = temperature (K)

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Enthalpy of sublimation

Henry's Law 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 by: Rolf Sander

Henry's Law constant (water solution)

k_H(T) = k°_H exp(d(ln(k_H))/d(1/T) ((1/T) - 1/(298.15 K)))
k°_H = Henry's law constant for solubility in water at 298.15 K (mol/(kg*bar))
d(ln(k_H))/d(1/T) = Temperature dependence constant (K)

Ion clustering 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 by: Michael M. Meot-Ner (Mautner) and Sharon G. Lias

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.

Clustering reactions

H₄P⁺ +  = (H₄P⁺ • )

By formula: H₄P⁺ + H₃P = (H₄P⁺ • H₃P)

Bond type: Hydrogen bond (positive ion to hydride)

(H₄P⁺ • ) +  = (H₄P⁺ • 2)

By formula: (H₄P⁺ • H₃P) + H₃P = (H₄P⁺ • 2H₃P)

Bond type: Hydrogen bond (positive ion to hydride)

(H₄P⁺ • 2) +  = (H₄P⁺ • 3)

By formula: (H₄P⁺ • 2H₃P) + H₃P = (H₄P⁺ • 3H₃P)

Bond type: Hydrogen bond (positive ion to hydride)

(H₄P⁺ • 3) +  = (H₄P⁺ • 4)

By formula: (H₄P⁺ • 3H₃P) + H₃P = (H₄P⁺ • 4H₃P)

Bond type: Hydrogen bond (positive ion to hydride)

(H₄P⁺ • 4) +  = (H₄P⁺ • 5)

By formula: (H₄P⁺ • 4H₃P) + H₃P = (H₄P⁺ • 5H₃P)

Bond type: Hydrogen bond (positive ion to hydride)

H₅P₂⁺ +  = (H₅P₂⁺ • )

By formula: H₅P₂⁺ + H₃P = (H₅P₂⁺ • H₃P)

H₆P₃⁺ +  = (H₆P₃⁺ • )

By formula: H₆P₃⁺ + H₃P = (H₆P₃⁺ • H₃P)

References

Go To: Top, Gas phase thermochemistry data, Phase change data, Henry's Law data, Ion clustering data, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Chase, 1998
Chase, M.W., Jr., NIST-JANAF Themochemical Tables, Fourth Edition, J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [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]

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, 1947
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]

Long and Franklin, 1974
Long, J.W.; Franklin, J.L., Ion - Solvation Reactions of Phosphine, J. Am. Chem. Soc., 1974, 96, 8, 2320, https://doi.org/10.1021/ja00815a003 . [all data]

Notes

Go To: Top, Gas phase thermochemistry data, Phase change data, Henry's Law data, Ion clustering data, References

• Symbols used in this document:
  

  S°gas,1 bar	Entropy of gas at standard conditions (1 bar)
  Ttriple	Triple point temperature
  d(ln(kH))/d(1/T)	Temperature dependence parameter for Henry's Law constant
  k°H	Henry's Law constant at 298.15K
  ΔfH°gas	Enthalpy of formation of gas at standard conditions
  ΔrH°	Enthalpy of reaction at standard conditions
  ΔrS°	Entropy of reaction at standard conditions
  ΔsubH	Enthalpy of sublimation
  ΔvapH	Enthalpy of vaporization

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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