Benzene (C 6 H 6 )

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Benzene (C₆H₆)
Categories:	Fluid; Solvent
Key Words:	C6H6
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Physical Properties	Metric	English	Comments

Density	0.8765 g/cc @Temperature 20.0 °C	0.03167 lb/in³ @Temperature 68.0 °F
Viscosity	0.604 cP @Temperature 25.0 °C	0.604 cP @Temperature 77.0 °F
Molecular Weight	78.12 g/mol	78.12 g/mol
Vapor Pressure	0.1000 bar @Temperature 20.0 °C	75.00 torr @Temperature 68.0 °F
	0.10026 bar @Temperature 20.0 °C	75.198 torr @Temperature 68.0 °F
Surface Tension	28.22 dynes/cm	28.22 dynes/cm	at 25°C; Gamma

Chemical Properties	Metric	English	Comments
Critical Pressure	48.9 bar	36700 torr
	48.95 bar	36720 torr
Critical Temperature	288.89 °C	552.00 °F
	289 °C	552 °F
Critical Density	0.302 g/cc	0.0109 lb/in³
	0.305 g/cc	0.0110 lb/in³
Critical Molar Volume	256 cm³/mol	15.6 in³/mol
	259 cm³/mol	15.8 in³/mol

Electrical Properties	Metric	English	Comments
Dielectric Constant	2.274	2.274
	2.284	2.284

Thermal Properties	Metric	English	Comments
Heat of Fusion	126.3 J/g	54.35 BTU/lb	Enthalpy of fusion at normal melting point
Heat of Vaporization	393.2 J/g	169.2 BTU/lb	Enthalpy of vaporization at normal boiling temperature
Specific Heat Capacity	1.924 J/g-°C @Temperature 25.0 °C	0.4598 BTU/lb-°F @Temperature 77.0 °F	Vapor
Thermal Conductivity	0.1411 W/m-K @Temperature 25.0 °C	0.9792 BTU-in/hr-ft²-°F @Temperature 77.0 °F
Melting Point	5.49 °C	41.9 °F	At atmospheric pressure (760 torr)
Boiling Point	80.1 °C @Pressure 0.101 MPa	176 °F @Pressure 14.7 psi

Optical Properties	Metric	English	Comments
Refractive Index	1.5011 @Temperature 20.0 °C, Wavelength 589.3 nm	1.5011 @Temperature 68.0 °F, Wavelength 589.3 nm	Na D line

Descriptive Properties
Antoine's Vapor Pressure A Parameter	15.9008
Antoine's Vapor Pressure B Parameter	2788.51
Antoine's Vapor Pressure C Parameter	-52.36
Antoine's Vapor Pressure Formula	ln π_p = A - B/(T+C)		P in mmHg and T in K
CAS registry number (CARN)	71-43-2
Chemical Formula	C₆H₆
Critical Compressibility (Zc)	0.271
Dipole moment (p/C.m)	none
Dynamic Viscosity Formula	log₁₀ η=A(1/T-1/B)
Dynamic Viscosity Parameter A	545.64
Dynamic Viscosity Parameter B	265.34
Henry's Law Constant (atm m³/mol)	0.00555
Molar Heat Capacity (298K)	150.319 J/mol-K
Molar Heat Capacity of Vapor a Parameter	33.8946
Molar Heat Capacity of Vapor b Parameter	0.474
Molar Heat Capacity of Vapor c Parameter	-0.0003015
Molar Heat Capacity of Vapor d Parameter	7.125E-08
Molar Heat Capacity of Vapor Formula	C_p = a + bT + cT² + dT³		C_p in J/mol-K
UN Number	1114

References for this datasheet.

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VORG002 / 74513

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