Benzene - Thermophysical Properties

Interactive tool for calculating and visualizing thermophysical properties of Benzene (C6H6). This tool provides comprehensive data on thermal, physical, and chemical properties of benzene including density, viscosity, heat capacity, and critical parameters. Values are given for liquid benzene at 25°C (77°F, 298 K) and 1 bar unless otherwise specified.

Benzene - Thermophysical Properties

Benzene, C6H6, is a clear colorless to light-yellow liquid, flammable with a petroleum-like, aromatic odor.

Benzene is less dense than water and is slightly soluble in water. Hence it floats on water. Benzene vapor is heavier than air.

In industry benzene is used as a solvent, as a chemical intermediate, and is used in the synthesis of numerous chemicals.

Values are given for liquid at 25°C (77°F, 298 K) and 1 bar, if not other phase, temperature or pressure given.

Property	Value (SI)	Unit (SI)	Value (Alternative)	Unit (Alternative)
Autoignition temperature	771	K	498	°C
Boiling Point	353.2	K	80.08	°C
Critical density	312	kg/m³	4.00	mol/dm³
Critical pressure	4.89	MPa	48.9	bar
Critical temperature	562.0	K	288.9	°C
Critical volume	0.00320	m³/kg	250	cm³/mol
Density	873.7	kg/m³	11185	mol/m³
Flash point	262	K	-11	°C
Gas constant, individual (R)	106.4	J/kg·K	636.5	ft·lbf/slug·°R
Heat of combustion (liquid)	-41832	kJ/kg	-3267.6	kJ/mol
Heat of evaporation	433	kJ/kg	33.8	kJ/mol
Heat of formation (gas)	1061	kJ/kg	82.9	kJ/mol
Heat of formation (liquid)	627	kJ/kg	49	kJ/mol
Melting point	278.708	K	5.6	°C
Molecular Weight	78.112	g/mol	0.17221	lb/mol
Specific heat capacity, Cp (gas)	1.05	kJ/kg·K	82.4	J/mol·K
Specific heat capacity, Cp (liquid)	1.70	kJ/kg·K	133	J/mol·K
Specific Gravity (liquid)	0.88	—	0.88	relative to water
Surface tension	0.02822	N/m	28.2	dynes/cm
Thermal Conductivity	0.143	W/m·°C	0.0826	Btu/hr·ft·°F
Triple point temperature	278.7	K	5.6	°C
Vapor pressure	0.0128	MPa	12.8	kPa
Viscosity, dynamic	0.6040	cP	0.000604	Pa·s
Viscosity, kinematic	0.691	cSt	6.91 × 10⁻⁸	m²/s
Solubility in water (at 25°C)	1.79	mg/mL	1790	mg/L

Property

Value (SI)

Unit (SI)

Value (Alternative)

Unit (Alternative)

Autoignition temperature

771

498

°C

Boiling Point

353.2

80.08

°C

Critical density

312

kg/m³

4.00

mol/dm³

Critical pressure

4.89

MPa

48.9

bar

Critical temperature

562.0

288.9

°C

Critical volume

0.00320

m³/kg

250

cm³/mol

Density

873.7

kg/m³

11185

mol/m³

Flash point

262

-11

°C

Gas constant, individual (R)

106.4

J/kg·K

636.5

ft·lbf/slug·°R

Heat of combustion (liquid)

-41832

kJ/kg

-3267.6

kJ/mol

Heat of evaporation

433

kJ/kg

33.8

kJ/mol

Heat of formation (gas)

1061

kJ/kg

82.9

kJ/mol

Heat of formation (liquid)

627

kJ/kg

kJ/mol

Melting point

278.708

5.6

°C

Molecular Weight

78.112

g/mol

0.17221

lb/mol

Specific heat capacity, Cp (gas)

1.05

kJ/kg·K

82.4

J/mol·K

Specific heat capacity, Cp (liquid)

1.70

kJ/kg·K

133

J/mol·K

Specific Gravity (liquid)

0.88

—

0.88

relative to water

Surface tension

0.02822

N/m

28.2

dynes/cm

Thermal Conductivity

0.143

W/m·°C

0.0826

Btu/hr·ft·°F

Triple point temperature

278.7

5.6

°C

Vapor pressure

0.0128

MPa

12.8

kPa

Viscosity, dynamic

0.6040

0.000604

Pa·s

Viscosity, kinematic

0.691

cSt

6.91 × 10⁻⁸

m²/s

Solubility in water (at 25°C)

1.79

mg/mL

1790

mg/L