Chemical Properties of lanthanum (CAS 7439-91-0)

InChI

InChI=1S/La

InChI Key

FZLIPJUXYLNCLC-UHFFFAOYSA-N

Formula

La

SMILES

[La]

Molecular Weight¹

138.91

CAS

7439-91-0

• PAff : Proton affinity (kJ/mol).
• BasG : Gas basicity (kJ/mol).
• EA : Electron affinity (eV).
• IE : Ionization energy (eV).
• P_vap : Vapor pressure (kPa).
• ¹: Molecular weight from the IUPAC atomic weights tables.

Physical Properties

Property	Value	Unit	Source
PAff	1013.00	kJ/mol	NIST
BasG	991.90	kJ/mol	NIST
EA	0.47 ± 0.02	eV	NIST
IE	[5.50; 6.90]	eV
IE	5.58 ± 0.00	eV	NIST
IE	5.58	eV	NIST
IE	5.51 ± 0.09	eV	NIST
IE	5.50 ± 0.70	eV	NIST
IE	5.58 ± 0.00	eV	NIST
IE	5.60 ± 0.10	eV	NIST
IE	5.50 ± 0.20	eV	NIST
IE	Outlier 6.90 ± 1.20	eV	NIST
IE	5.58	eV	NIST
IE	5.55 ± 0.05	eV	NIST

Correlations

Property	Value	Unit	Temperature (K)	Source
Pvap	[3.43e-04; 101.32]	kPa	[1923.15; 3737.15]	The Yaw...
Equation			ln(Pvp) = A + B/(T + C)
Coefficient A			1.77362e+01
Coefficient B			-4.85776e+04
Coefficient C			-3.39800e+01
Temperature range, min.			1923.15
Temperature range, max.			3737.15
Pvap	3.43e-04	kPa	1923.15	Calculated Property
Pvap	4.09e-03	kPa	2124.71	Calculated Property
Pvap	0.03	kPa	2326.26	Calculated Property
Pvap	0.18	kPa	2527.82	Calculated Property
Pvap	0.75	kPa	2729.37	Calculated Property
Pvap	2.63	kPa	2930.93	Calculated Property
Pvap	7.83	kPa	3132.48	Calculated Property
Pvap	20.41	kPa	3334.04	Calculated Property
Pvap	47.62	kPa	3535.59	Calculated Property
Pvap	101.32	kPa	3737.15	Calculated Property

Mixtures

• lanthanum + indium + gallium
• lithium + lanthanum

Sources

• Thermochemistry of La1-xLnxPO4-monazites (Ln = Gd, Eu)
• Thermodynamic properties of ternary Me-Ga-In (Me = La, U) alloys in a fused Ga-In/LiCl-KCl system
• Investigation in the variation of Gibbs energy of formation of RE6UO12 (RE = La, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Tm, Yb, Lu) along the 4f series
• Enthalpy of Formation of Ln2O2CO3 II (Ln = La, Nd, Eu) and Thermodynamics of Decomposition Equilibria
• Liquid-liquid equilibrium in the lithium-lanthanum system
• The standard enthalpy of formation of superionic solid electrolyte Li7La3Zr2O12
• Thermodynamic investigation of thorium and strontium substituted monazite solid-solution
• 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.