Chemical Properties of lead (CAS 7439-92-1)

InChI

InChI=1S/Pb

InChI Key

WABPQHHGFIMREM-UHFFFAOYSA-N

Formula

Pb

SMILES

[Pb]

Molecular Weight¹

207.20

CAS

7439-92-1

• C_p,gas : Ideal gas heat capacity (J/mol×K).
• C_p,liquid : Liquid phase heat capacity (J/mol×K).
• C_p,solid : Solid phase heat capacity (J/mol×K).
• EA : Electron affinity (eV).
• Δ_fH°_gas : Enthalpy of formation at standard conditions (kJ/mol).
• IE : Ionization energy (eV).
• P_vap : Vapor pressure (kPa).
• S°_{gas,1 bar} : Molar entropy at standard conditions (1 bar) (J/mol×K).
• c_sound,fluid : Speed of sound in fluid (m/s).
• S°_{solid,1 bar} : Solid phase molar entropy at standard conditions (J/mol×K).
• λ_liquid : Liquid thermal conductivity (W/m×K).
• T_fus : Normal melting (fusion) point (K).
• ¹: Molecular weight from the IUPAC atomic weights tables.

Physical Properties

Property	Value	Unit	Source
EA	[0.36; 0.50]	eV
EA	0.36 ± 0.01	eV	NIST
EA	0.50	eV	NIST
ΔfH°gas	195.20 ± 0.80	kJ/mol	NIST
IE	[7.40; 7.60]	eV
IE	7.42 ± 0.00	eV	NIST
IE	Outlier 7.60 ± 0.20	eV	NIST
IE	7.42 ± 0.00	eV	NIST
IE	7.42	eV	NIST
IE	7.40 ± 0.40	eV	NIST
IE	7.42 ± 0.00	eV	NIST
IE	7.42 ± 0.01	eV	NIST
IE	7.42	eV	NIST
S°gas,1 bar	175.38 ± 0.01	J/mol×K	NIST
S°solid,1 bar	64.80 ± 0.30	J/mol×K	NIST
Tfus	[600.08; 600.64]	K
Tfus	600.64 ± 0.01	K	NIST
Tfus	600.08 ± 0.30	K	NIST

Cheméo can also estimate Normal Boiling Point Temperature, Critical Temperature, Critical Pressure, Critical Volume, Enthalpy of vaporization at standard conditions, Standard Gibbs free energy of formation, Acentric Factor, Log10 of Water solubility in mol/l for this compound, but they fall outside the models' validated range, so they are not shown here. Open the prediction tool to compute them on demand.

Temperature Dependent Properties

Property	Value	Unit	Temperature (K)	Source
csound,fluid	[1688.00; 1834.00]	m/s	[610.00; 1078.00]
csound,fluid	1834.00	m/s	610.00	Temperature Dependence of the Velocity of Sound in Liquid Metals of Group XIV
csound,fluid	1810.50	m/s	626.00	Temperature Dependence of the Velocity of Sound in Liquid Metals of Group XIV
csound,fluid	1790.30	m/s	678.00	Temperature Dependence of the Velocity of Sound in Liquid Metals of Group XIV
csound,fluid	1784.00	m/s	703.00	Temperature Dependence of the Velocity of Sound in Liquid Metals of Group XIV
csound,fluid	1769.80	m/s	787.00	Temperature Dependence of the Velocity of Sound in Liquid Metals of Group XIV
csound,fluid	1749.00	m/s	814.00	Temperature Dependence of the Velocity of Sound in Liquid Metals of Group XIV
csound,fluid	1729.80	m/s	897.00	Temperature Dependence of the Velocity of Sound in Liquid Metals of Group XIV
csound,fluid	1688.00	m/s	1078.00	Temperature Dependence of the Velocity of Sound in Liquid Metals of Group XIV
λliquid	[16.20; 17.60]	W/m×K	[620.30; 729.50]
λliquid	16.20	W/m×K	620.30	Measurements of the Thermal Conductivity of Molten Lead Using a New Transient Hot-Wire Sensor
λliquid	17.00	W/m×K	678.10	Measurements of the Thermal Conductivity of Molten Lead Using a New Transient Hot-Wire Sensor
λliquid	17.60	W/m×K	729.50	Measurements of the Thermal Conductivity of Molten Lead Using a New Transient Hot-Wire Sensor

Correlations

Property	Value	Unit	Temperature (K)	Source
Cp,gas	[24.79; 34.08]	J/mol×K	[2019.02; 6000.00]	NIST
Equation			Y = A + B·t + C·t² + D·t³ + E/t², t = T/1000 Y is Cp,gas in J/mol×K, T in K
Coefficient A			-8.56586e+01
Coefficient B			6.92816e+01
Coefficient C			-1.33175e+01
Coefficient D			8.40030e-01
Coefficient E			7.31472e+01
Reference			Chase, 1998
Comment			F=333.3485, G=170.0411, H=195.2003; Data last reviewed in March, 1962
Temperature range, min.			2019.02
Temperature range, max.			6000.00
Cp,gas	24.79	J/mol×K	2019.02	Calculated Property
Cp,gas	28.79	J/mol×K	2461.35	Calculated Property
Cp,gas	32.47	J/mol×K	2903.68	Calculated Property
Cp,gas	35.06	J/mol×K	3346.01	Calculated Property
Cp,gas	36.45	J/mol×K	3788.35	Calculated Property
Cp,gas	36.78	J/mol×K	4230.68	Calculated Property
Cp,gas	36.35	J/mol×K	4673.01	Calculated Property
Cp,gas	35.50	J/mol×K	5115.34	Calculated Property
Cp,gas	34.61	J/mol×K	5557.67	Calculated Property
Cp,gas	34.08	J/mol×K	6000.00	Calculated Property

Property	Value	Unit	Temperature (K)	Source
Cp,liquid	[30.70; 29.47]	J/mol×K	[600.60; 2019.02]	NIST
Equation			Y = A + B·t + C·t² + D·t³ + E/t², t = T/1000 Y is Cp,liquid in J/mol×K, T in K
Coefficient A			3.80045e+01
Coefficient B			-1.46225e+01
Coefficient C			7.25547e+00
Coefficient D			-1.03337e+00
Coefficient E			-3.30775e-01
Reference			Chase, 1998
Comment			F=-7.944328, G=118.7992, H=4.282993; Data last reviewed in March, 1962
Temperature range, min.			600.60
Temperature range, max.			2019.02
Cp,liquid	30.70	J/mol×K	600.60	Calculated Property
Cp,liquid	30.06	J/mol×K	758.20	Calculated Property
Cp,liquid	29.51	J/mol×K	915.80	Calculated Property
Cp,liquid	29.10	J/mol×K	1073.41	Calculated Property
Cp,liquid	28.85	J/mol×K	1231.01	Calculated Property
Cp,liquid	28.75	J/mol×K	1388.61	Calculated Property
Cp,liquid	28.78	J/mol×K	1546.21	Calculated Property
Cp,liquid	28.93	J/mol×K	1703.82	Calculated Property
Cp,liquid	29.16	J/mol×K	1861.42	Calculated Property
Cp,liquid	29.47	J/mol×K	2019.02	Calculated Property

Property	Value	Unit	Temperature (K)	Source
Cp,solid	[26.84; 29.45]	J/mol×K	[298.00; 600.60]	NIST
Equation			Y = A + B·t + C·t² + D·t³ + E/t², t = T/1000 Y is Cp,solid in J/mol×K, T in K
Coefficient A			2.50145e+01
Coefficient B			5.44184e+00
Coefficient C			4.06137e+00
Coefficient D			-1.23621e+00
Coefficient E			-1.06570e-02
Reference			Chase, 1998
Comment			F=-7.772575, G=93.19902, H=0.000000; Data last reviewed in March, 1962
Temperature range, min.			298.00
Temperature range, max.			600.60
Cp,solid	26.84	J/mol×K	298.00	Calculated Property
Cp,solid	27.12	J/mol×K	331.62	Calculated Property
Cp,solid	27.40	J/mol×K	365.24	Calculated Property
Cp,solid	27.69	J/mol×K	398.87	Calculated Property
Cp,solid	27.97	J/mol×K	432.49	Calculated Property
Cp,solid	28.26	J/mol×K	466.11	Calculated Property
Cp,solid	28.55	J/mol×K	499.73	Calculated Property
Cp,solid	28.85	J/mol×K	533.36	Calculated Property
Cp,solid	29.15	J/mol×K	566.98	Calculated Property
Cp,solid	29.45	J/mol×K	600.60	Calculated Property

Property	Value	Unit	Temperature (K)	Source
Pvap	[1.35e-07; 101.32]	kPa	[708.00; 2022.15]	The Yaws Handbook of Vapor Pressure
Equation			ln(Y) = A + B/(T + C) Y is Pvap in kPa, T in K
Coefficient A			1.51702e+01
Coefficient B			-2.10268e+04
Coefficient C			-2.94500e+01
Temperature range, min.			708.00
Temperature range, max.			2022.15
Pvap	1.35e-07	kPa	708.00	Calculated Property
Pvap	3.26e-05	kPa	854.02	Calculated Property
Pvap	1.51e-03	kPa	1000.03	Calculated Property
Pvap	0.03	kPa	1146.05	Calculated Property
Pvap	0.23	kPa	1292.07	Calculated Property
Pvap	1.28	kPa	1438.08	Calculated Property
Pvap	5.18	kPa	1584.10	Calculated Property
Pvap	16.55	kPa	1730.12	Calculated Property
Pvap	43.99	kPa	1876.13	Calculated Property
Pvap	101.32	kPa	2022.15	Calculated Property

Mixtures

• cadmium + lead
• silver + lead + copper
• gold + lead
• silver + lead
• silver + gold + lead
• lead + copper
• antimony + lead

Sources

• Cheméo Relay (1.0, beta) Beta: served but experimental, data-limited and below our cross-validation release bar; the Joback value is recommended where available.
• Temperature Dependence of the Velocity of Sound in Liquid Metals of Group XIV
• Measurements of the Thermal Conductivity of Molten Lead Using a New Transient Hot-Wire Sensor
• Experimental investigation and calculation of vapor-liquid equilibria for Cu-Pb binary alloy in vacuum distillation
• Experimental investigation and modelling of phase equilibria for the Ag-Cu-Pb system in vacuum distillation
• The standard molar enthalpies of formation and heat capacities of PbMoO4 (s) and Pb2MoO5 (s)
• Thermal conductivities of solid and liquid phases in Pb Cd and Sn Zn binary eutectic alloys
• Enthalpies of mixing of Au Pb and Ag Au Pb liquid alloys at 973K
• Isomorphism and phase diagram of Pb5(PO4)3F-Pb5(PO4)3Cl system
• Calorimetric investigations of UPb3 compound
• Density, Surface Tension, and Viscosity of Liquid Pb-Sb Alloys
• NIST Webbook
• The Yaws Handbook of Vapor Pressure

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