Chemical Properties of Bromine (CAS 7726-95-6)

InChI

InChI=1S/Br2/c1-2

InChI Key

GDTBXPJZTBHREO-UHFFFAOYSA-N

Formula

Br2

SMILES

BrBr

Molecular Weight¹

159.81

CAS

7726-95-6

Other Names

• Br2
• Brom
• Brome
• Bromo
• Broom
• Dibromine
• UN 1744

• C_p,gas : Ideal gas heat capacity (J/mol×K).
• η : Dynamic viscosity (Pa×s).
• EA : Electron affinity (eV).
• Δ_fG° : Standard Gibbs free energy of formation (kJ/mol).
• Δ_fH°_gas : Enthalpy of formation at standard conditions (kJ/mol).
• Δ_fusH° : Enthalpy of fusion at standard conditions (kJ/mol).
• Δ_vapH° : Enthalpy of vaporization at standard conditions (kJ/mol).
• Δ_vapH : Enthalpy of vaporization at a given temperature (kJ/mol).
• IE : Ionization energy (eV).
• log₁₀WS : Log10 of Water solubility in mol/l.
• logP_oct/wat : Octanol/Water partition coefficient.
• McVol : McGowan's characteristic volume (ml/mol).
• P_c : Critical Pressure (kPa).
• P_vap : Vapor pressure (kPa).
• S°_{gas,1 bar} : Molar entropy at standard conditions (1 bar) (J/mol×K).
• S°_liquid : Liquid phase molar entropy at standard conditions (J/mol×K).
• T_boil : Normal Boiling Point Temperature (K).
• T_c : Critical Temperature (K).
• T_fus : Normal melting (fusion) point (K).
• V_c : Critical Volume (m³/kmol).
• ¹: Molecular weight from the IUPAC atomic weights tables.

Physical Properties

Property	Value	Unit	Source
EA	[1.47; 2.87]	eV
EA	2.42	eV	NIST
EA	2.60 ± 0.20	eV	NIST
EA	2.62 ± 0.20	eV	NIST
EA	2.55 ± 0.10	eV	NIST
EA	2.51 ± 0.10	eV	NIST
EA	2.87 ± 0.14	eV	NIST
EA	Outlier 1.47 ± 0.05	eV	NIST
ΔfG°	-22.24	kJ/mol	Joback Calculated Property
ΔfH°gas	30.91 ± 0.11	kJ/mol	NIST
ΔfusH°	6.33	kJ/mol	Joback Calculated Property
ΔvapH°	28.46	kJ/mol	Joback Calculated Property
IE	[10.50; 10.92]	eV
IE	10.52 ± 0.00	eV	NIST
IE	10.52 ± 0.00	eV	NIST
IE	10.52 ± 0.01	eV	NIST
IE	10.51 ± 0.02	eV	NIST
IE	10.50 ± 0.30	eV	NIST
IE	10.52 ± 0.01	eV	NIST
IE	10.55	eV	NIST
IE	10.52	eV	NIST
IE	10.80 ± 0.20	eV	NIST
IE	10.51 ± 0.01	eV	NIST
IE	10.70 ± 0.10	eV	NIST
IE	10.51	eV	NIST
IE	10.52 ± 0.01	eV	NIST
IE	10.56 ± 0.01	eV	NIST
IE	10.51	eV	NIST
IE	10.57	eV	NIST
IE	Outlier 10.92	eV	NIST
log10WS	-1.68		Crippen Calculated Property
logPoct/wat	1.691		Crippen Calculated Property
McVol	45.860	ml/mol	McGowan Calculated Property
Pc	8573.39	kPa	Joback Calculated Property
S°gas,1 bar	245.47 ± 0.01	J/mol×K	NIST
S°liquid	152.21 ± 0.30	J/mol×K	NIST
Tboil	331.72	K	Joback Calculated Property
Tc	544.73	K	Joback Calculated Property
Tfus	[254.15; 266.00]	K
Tfus	266.00 ± 0.30	K	NIST
Tfus	254.15 ± 10.00	K	NIST
Vc	0.160	m3/kmol	Joback Calculated Property

Temperature Dependent Properties

Property	Value	Unit	Temperature (K)	Source
Cp,gas	[34.86; 36.86]	J/mol×K	[331.72; 544.73]
T(K) Ideal gas heat capacity (J/mol×K) 35 35.5 36 36.5 37 350 400 450 500
Cp,gas	34.86	J/mol×K	331.72	Joback Calculated Property
Cp,gas	35.50	J/mol×K	367.22	Joback Calculated Property
Cp,gas	35.99	J/mol×K	402.72	Joback Calculated Property
Cp,gas	36.36	J/mol×K	438.23	Joback Calculated Property
Cp,gas	36.62	J/mol×K	473.73	Joback Calculated Property
Cp,gas	36.78	J/mol×K	509.23	Joback Calculated Property
Cp,gas	36.86	J/mol×K	544.73	Joback Calculated Property
η	[0.0005255; 0.0024769]	Pa×s	[209.36; 331.72]
T(K) Dynamic viscosity (Pa×s) 5.00e-4 1.00e-3 1.50e-3 2.00e-3 2.50e-3 250 300
η	0.0024769	Pa×s	209.36	Joback Calculated Property
η	0.0017056	Pa×s	229.75	Joback Calculated Property
η	0.0012482	Pa×s	250.15	Joback Calculated Property
η	0.0009574	Pa×s	270.54	Joback Calculated Property
η	0.0007622	Pa×s	290.93	Joback Calculated Property
η	0.0006252	Pa×s	311.33	Joback Calculated Property
η	0.0005255	Pa×s	331.72	Joback Calculated Property
ΔvapH	[17.60; 31.30]	kJ/mol	[206.00; 363.00]
ΔvapH	17.60	kJ/mol	206.00	NIST
ΔvapH	31.30	kJ/mol	343.00	NIST
ΔvapH	29.80	kJ/mol	363.00	NIST

Correlations

Property	Value	Unit	Temperature (K)	Source
Pvap	[5.85; 10296.51]	kPa	[265.85; 584.15]	The Yaw...
Equation			ln(Pvp) = A + B/(T + C)
Coefficient A			1.47457e+01
Coefficient B			-3.04378e+03
Coefficient C			-3.13500e+01
Temperature range, min.			265.85
Temperature range, max.			584.15
T(K) Vapor pressure (kPa) 0 2000 4000 6000 8000 10000 300 400 500
Pvap	5.85	kPa	265.85	Calculated Property
Pvap	32.04	kPa	301.22	Calculated Property
Pvap	118.36	kPa	336.58	Calculated Property
Pvap	333.34	kPa	371.95	Calculated Property
Pvap	772.63	kPa	407.32	Calculated Property
Pvap	1549.81	kPa	442.68	Calculated Property
Pvap	2784.30	kPa	478.05	Calculated Property
Pvap	4590.08	kPa	513.42	Calculated Property
Pvap	7067.18	kPa	548.78	Calculated Property
Pvap	10296.51	kPa	584.15	Calculated Property
Pvap	[1.37; 200.31]	kPa	[243.15; 354.00]	KDB Vap...
Equation			ln(Pvp) = A + B/T + C*ln(T) + D*T^2
Coefficient A			2.30793e+02
Coefficient B			-1.11621e+04
Coefficient C			-3.41575e+01
Coefficient D			5.20176e-05
Temperature range, min.			243.15
Temperature range, max.			354.00
T(K) Vapor pressure (kPa) 0 50 100 150 200 250 300 350
Pvap	1.37	kPa	243.15	Calculated Property
Pvap	3.18	kPa	255.47	Calculated Property
Pvap	6.64	kPa	267.78	Calculated Property
Pvap	12.70	kPa	280.10	Calculated Property
Pvap	22.57	kPa	292.42	Calculated Property
Pvap	37.82	kPa	304.73	Calculated Property
Pvap	60.39	kPa	317.05	Calculated Property
Pvap	92.72	kPa	329.37	Calculated Property
Pvap	137.98	kPa	341.68	Calculated Property
Pvap	200.31	kPa	354.00	Calculated Property

Similar Compounds

Find more compounds similar to Bromine.

Sources

• KDB Vapor Pressure Data
• Crippen Method
• Crippen Method
• Standard molar enthalpies of formation of hydroxy-, chlor-, and bromapatite
• Joback Method
• McGowan Method
• NIST Webbook
• The Yaws Handbook of Vapor Pressure

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