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

• 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 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

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	Tempera...
csound,fluid	1810.50	m/s	626.00	Tempera...
csound,fluid	1790.30	m/s	678.00	Tempera...
csound,fluid	1784.00	m/s	703.00	Tempera...
csound,fluid	1769.80	m/s	787.00	Tempera...
csound,fluid	1749.00	m/s	814.00	Tempera...
csound,fluid	1729.80	m/s	897.00	Tempera...
csound,fluid	1688.00	m/s	1078.00	Tempera...
λ	[16.20; 17.60]	W/m×K	[620.30; 729.50]
λ	16.20	W/m×K	620.30	Measure...
λ	17.00	W/m×K	678.10	Measure...
λ	17.60	W/m×K	729.50	Measure...

Correlations

Property	Value	Unit	Temperature (K)	Source
Pvap	[1.35e-07; 101.32]	kPa	[708.00; 2022.15]	The Yaw...
Equation			ln(Pvp) = A + B/(T + C)
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

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

Sources

• 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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Outlier This icon means that the value is more than 2 standard deviations away from the property mean.