phosphorus
- Formula: P
- Molecular weight: 30.973762
- IUPAC Standard InChIKey: OAICVXFJPJFONN-UHFFFAOYSA-N
- CAS Registry Number: 7723-14-0
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: red phosphorus; Phosphorus atom
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Gas phase thermochemistry data
Go To: Top, Condensed phase thermochemistry data, 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 |
---|---|---|---|---|---|
ΔfH°gas | 316.5 ± 1.0 | kJ/mol | Review | Cox, Wagman, et al., 1984 | CODATA Review value |
ΔfH°gas | 316.39 | kJ/mol | Review | Chase, 1998 | Data last reviewed in June, 1961 |
Quantity | Value | Units | Method | Reference | Comment |
S°gas,1 bar | 163.199 ± 0.003 | J/mol*K | Review | Cox, Wagman, et al., 1984 | CODATA Review value |
S°gas,1 bar | 163.20 | J/mol*K | Review | Chase, 1998 | Data last reviewed in June, 1961 |
Gas Phase Heat Capacity (Shomate Equation)
Cp° = 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
Cp = heat capacity (J/mol*K)
H° = standard enthalpy (kJ/mol)
S° = standard entropy (J/mol*K)
t = temperature (K) / 1000.
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Temperature (K) | 1180.008 to 2200. | 2200. to 6000. |
---|---|---|
A | 20.44403 | -2.107549 |
B | 1.051745 | 9.311953 |
C | -1.098514 | -0.557522 |
D | 0.377924 | -0.020498 |
E | 0.010645 | 29.30064 |
F | 310.2930 | 353.6459 |
G | 187.7302 | 190.4707 |
H | 316.3903 | 316.3903 |
Reference | Chase, 1998 | Chase, 1998 |
Comment | Data last reviewed in June, 1961 | Data last reviewed in June, 1961 |
Condensed phase thermochemistry data
Go To: Top, Gas phase thermochemistry data, 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 |
---|---|---|---|---|---|
ΔfH°liquid | 0.62 | kJ/mol | Review | Chase, 1998 | Data last reviewed in June, 1961 |
Quantity | Value | Units | Method | Reference | Comment |
S°liquid,1 bar | 43.01 | J/mol*K | Review | Chase, 1998 | Data last reviewed in June, 1961 |
Quantity | Value | Units | Method | Reference | Comment |
ΔfH°solid | -17.46 | kJ/mol | Review | Chase, 1998 | red, v phase; Data last reviewed in June, 1961 |
Quantity | Value | Units | Method | Reference | Comment |
S°solid,1 bar | 41.09 ± 0.25 | J/mol*K | Review | Cox, Wagman, et al., 1984 | white phase; CODATA Review value |
Liquid Phase Heat Capacity (Shomate Equation)
Cp° = 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
Cp = heat capacity (J/mol*K)
H° = standard enthalpy (kJ/mol)
S° = standard entropy (J/mol*K)
t = temperature (K) / 1000.
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Temperature (K) | 317.3 to 1180.008 |
---|---|
A | 26.32602 |
B | 1.041373×10-10 |
C | -6.121360×10-11 |
D | 1.094033×10-11 |
E | 2.995196×10-12 |
F | -7.234262 |
G | 74.86891 |
H | 0.615002 |
Reference | Chase, 1998 |
Comment | Data last reviewed in June, 1961 |
Solid Phase Heat Capacity (Shomate Equation)
Cp° = 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
Cp = heat capacity (J/mol*K)
H° = standard enthalpy (kJ/mol)
S° = standard entropy (J/mol*K)
t = temperature (K) / 1000.
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Temperature (K) | 298. to 317.3 | 298. to 317.3 | 298. to 317.3 | 298. to 317.3 |
---|---|---|---|---|
A | 24.32214 | 16.45576 | 28.04226 | 28.38677 |
B | -1.809807 | 43.28892 | -18.96093 | -19.14360 |
C | 7.486431 | -58.73876 | 36.61209 | 36.82476 |
D | 3.147950 | 25.60646 | -13.81611 | -13.89983 |
E | -0.296815 | -0.086728 | -0.357001 | -0.358810 |
F | -25.70876 | -6.657121 | -21.45191 | -21.96617 |
G | 50.77995 | 49.97160 | 59.26845 | 59.11030 |
H | -17.46004 | 0.000000 | -12.43903 | -12.85103 |
Reference | Chase, 1998 | Chase, 1998 | Chase, 1998 | Chase, 1998 |
Comment | red, v phase; Data last reviewed in June, 1961 | white phase; Data last reviewed in June, 1961 | red, iv phase; Data last reviewed in June, 1961 | black phase; Data last reviewed in June, 1961 |
Phase change data
Go To: Top, Gas phase thermochemistry data, 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 | 550. | K | N/A | Honig and Kramer, 1969 | Uncertainty assigned by TRC = 3. K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 870. | K | N/A | Honig and Kramer, 1969 | Uncertainty assigned by TRC = 0.6 K; TRC |
Ttriple | 317.3 | K | N/A | Honig and Kramer, 1969 | Metastable crystal phase; Uncertainty assigned by TRC = 0.06 K; TRC |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (bar)
T = temperature (K)
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Temperature (K) | A | B | C | Reference | Comment |
---|---|---|---|---|---|
349.8 to 553. | 5.04162 | 2819.239 | 6.399 | Stull, 1947 | Coefficents calculated by NIST from author's data. |
References
Go To: Top, Gas phase thermochemistry data, 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]
Chase, 1998
Chase, M.W., Jr.,
NIST-JANAF Themochemical Tables, Fourth Edition,
J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [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]
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]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, References
- Symbols used in this document:
S°gas,1 bar Entropy of gas at standard conditions (1 bar) S°liquid,1 bar Entropy of liquid at standard conditions (1 bar) S°solid,1 bar Entropy of solid at standard conditions (1 bar) Tboil Boiling point Ttriple Triple point temperature ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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