Chemical Properties of scandium (CAS 7440-20-2)

InChI

InChI=1S/Sc

InChI Key

SIXSYDAISGFNSX-UHFFFAOYSA-N

Formula

Sc

SMILES

[Sc]

Molecular Weight¹

44.96

CAS

7440-20-2

• 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	914.00	kJ/mol	NIST
BasG	892.00	kJ/mol	NIST
EA	0.19 ± 0.02	eV	NIST
IE	[6.54; 6.70]	eV
IE	6.56 ± 0.00	eV	NIST
IE	6.56	eV	NIST
IE	6.56 ± 0.00	eV	NIST
IE	6.56	eV	NIST
IE	6.56	eV	NIST
IE	6.70 ± 0.50	eV	NIST
IE	6.70 ± 0.50	eV	NIST
IE	6.54	eV	NIST

Correlations

Property	Value	Unit	Temperature (K)	Source
Pvap	[2.97e-04; 354.19]	kPa	[1573.15; 3473.15]	The Yaw...
Equation			ln(Pvp) = A + B/(T + C)
Coefficient A			1.57759e+01
Coefficient B			-3.21470e+04
Coefficient C			-2.27970e+02
Temperature range, min.			1573.15
Temperature range, max.			3473.15
Pvap	2.97e-04	kPa	1573.15	Calculated Property
Pvap	7.60e-03	kPa	1784.26	Calculated Property
Pvap	0.09	kPa	1995.37	Calculated Property
Pvap	0.62	kPa	2206.48	Calculated Property
Pvap	2.99	kPa	2417.59	Calculated Property
Pvap	10.86	kPa	2628.71	Calculated Property
Pvap	32.06	kPa	2839.82	Calculated Property
Pvap	80.50	kPa	3050.93	Calculated Property
Pvap	177.78	kPa	3262.04	Calculated Property
Pvap	354.19	kPa	3473.15	Calculated Property

Sources

• NIST Webbook
• The Yaws Handbook of Vapor Pressure

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