Chemical Properties of barium oxide, obtained by calcining witherite (CAS 1304-28-5)

InChI

InChI=1S/Ba.O

InChI Key

QVQLCTNNEUAWMS-UHFFFAOYSA-N

Formula

BaO

SMILES

O=[Ba]

Molecular Weight¹

153.33

CAS

1304-28-5

Other Names

• Barium monoxide
• barium oxide

• PAff : Proton affinity (kJ/mol).
• BasG : Gas basicity (kJ/mol).
• 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	1215.40	kJ/mol	NIST
BasG	1187.60	kJ/mol	NIST
IE	[6.46; 7.00]	eV
IE	6.46 ± 0.07	eV	NIST
IE	6.91	eV	NIST
IE	6.50 ± 0.15	eV	NIST
IE	6.46 ± 0.07	eV	NIST
IE	6.80 ± 0.20	eV	NIST
IE	6.90 ± 0.10	eV	NIST
IE	6.50 ± 0.20	eV	NIST
IE	7.00 ± 1.00	eV	NIST
IE	6.97 ± 0.12	eV	NIST
IE	6.80 ± 0.50	eV	NIST
IE	6.50 ± 0.30	eV	NIST
IE	6.89 ± 0.03	eV	NIST

Correlations

Property	Value	Unit	Temperature (K)	Source
Pvap	[61.52; 101.32]	kPa	[2223.15; 2273.15]	The Yaw...
Equation			ln(Pvp) = A + B/(T + C)
Coefficient A			2.68019e+01
Coefficient B			-5.04266e+04
Temperature range, min.			2223.15
Temperature range, max.			2273.15
Pvap	61.52	kPa	2223.15	Calculated Property
Pvap	65.10	kPa	2228.71	Calculated Property
Pvap	68.87	kPa	2234.26	Calculated Property
Pvap	72.83	kPa	2239.82	Calculated Property
Pvap	77.01	kPa	2245.37	Calculated Property
Pvap	81.40	kPa	2250.93	Calculated Property
Pvap	86.01	kPa	2256.48	Calculated Property
Pvap	90.86	kPa	2262.04	Calculated Property
Pvap	95.96	kPa	2267.59	Calculated Property
Pvap	101.32	kPa	2273.15	Calculated Property

Similar Compounds

Find more compounds similar to barium oxide, obtained by calcining witherite.

Sources

• NIST Webbook
• The Yaws Handbook of Vapor Pressure

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