2-Butanol (CH 3 CH 2 CH(OH)CH 3 ; secondary-Butyl Alcohol)

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2-Butanol (CH₃CH₂CH(OH)CH₃; secondary-Butyl Alcohol)
Categories:	Fluid; Solvent
Key Words:	OHCH3
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Physical Properties	Metric	English	Comments

Density	0.808 g/cc @Temperature 20.0 °C	0.0292 lb/in³ @Temperature 68.0 °F
Viscosity	3.096 cP @Temperature 25.0 °C	3.096 cP @Temperature 77.0 °F
	3.706 cP @Temperature 20.0 °C	3.706 cP @Temperature 68.0 °F	Dynamic Viscosity
Molecular Weight	74.12 g/mol	74.12 g/mol
Vapor Pressure	0.040162 bar @Temperature 20.0 °C	30.124 torr @Temperature 68.0 °F
	0.1000 bar @Temperature 48.2 °C	75.00 torr @Temperature 119 °F
Surface Tension	23.47 dynes/cm @Temperature 20.0 °C	23.47 dynes/cm @Temperature 68.0 °F

Chemical Properties	Metric	English	Comments
Critical Pressure	42.02 bar	31520 torr
Critical Temperature	263.08 °C	505.54 °F
Critical Density	0.276 g/cc	0.00997 lb/in³
Critical Molar Volume	269 cm³/mol	16.4 in³/mol

Electrical Properties	Metric	English	Comments
Dielectric Constant	17.26 @Temperature 20.0 °C	17.26 @Temperature 68.0 °F

Thermal Properties	Metric	English	Comments
Heat of Fusion	80.55 J/g	34.65 BTU/lb	Enthalpy of fusion at normal melting point
Heat of Vaporization	550.4 J/g	236.8 BTU/lb
	670.8 J/g	288.6 BTU/lb	Enthalpy of vaporization at normal boiling temperature
Specific Heat Capacity	2.884 J/g-°C	0.6893 BTU/lb-°F
	1.483 J/g-°C @Temperature 25.0 °C	0.3544 BTU/lb-°F @Temperature 77.0 °F	Vapor
Thermal Conductivity	0.1346 W/m-K @Temperature 20.0 °C	0.9341 BTU-in/hr-ft²-°F @Temperature 68.0 °F
Melting Point	-114.7 °C	-174.5 °F
Boiling Point	99.51 °C @Pressure 0.101 MPa	211.1 °F @Pressure 14.7 psi

Optical Properties	Metric	English	Comments
Refractive Index	1.3954 @Temperature 20.0 °C, Wavelength 589.3 nm	1.3954 @Temperature 68.0 °F, Wavelength 589.3 nm	Na D line

Descriptive Properties
Antoine's Vapor Pressure A Parameter	16.8548
Antoine's Vapor Pressure B Parameter	2658.29
Antoine's Vapor Pressure C Parameter	-95.5
Antoine's Vapor Pressure Formula	ln π_p = A - B/(T+C)		P in mmHg and T in K
CAS registry number (CARN)	78-92-2
Chemical Formula	C₄H₁₀O
Critical Compressibility (Zc)	0.259
Dipole moment (p/C.m)	5.671E-28
Dynamic Viscosity Formula	log₁₀ η=A(1/T-1/B)
Dynamic Viscosity Parameter A	972.1
Dynamic Viscosity Parameter B	363.38
Henry's Law Constant (atm m³/mol)	1.73E-05
Molar Heat Capacity (298K)	109.912 J/mol-K
Molar Heat Capacity of Vapor a Parameter	-48.5804
Molar Heat Capacity of Vapor b Parameter	0.7167
Molar Heat Capacity of Vapor c Parameter	-0.0007079
Molar Heat Capacity of Vapor d Parameter	2.918E-07
Molar Heat Capacity of Vapor Formula	C_p = a + bT + cT² + dT³		C_p in J/mol-K
UN Number	1120

References for this datasheet.

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