n-Butyric acid (Butanoic acid), C 4 H 8 O 2

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n-Butyric acid (Butanoic acid), C₄H₈O₂
Categories:	Fluid; Solvent
Key Words:	C4H8O2
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Physical Properties	Original Value	Comments

Density	0.958 g/cc @Temperature 20.0 °C
Viscosity	1.55 cP @Temperature 20.0 °C	Dynamic Viscosity
Molecular Weight	88.107 g/mol
Vapor Pressure	0.531 torr @Temperature 20.0 °C
Surface Tension	26.8 dynes/cm @Temperature 20.0 °C

Chemical Properties	Original Value	Comments
Critical Pressure	52.0 atm
Critical Temperature	355 °C
Critical Density	0.302 g/cc
Critical Molar Volume	292 cm³/mol

Thermal Properties	Original Value	Comments
Heat of Vaporization	476.8 J/g
Specific Heat Capacity	1.304 J/g-°C @Temperature 25.0 °C	Vapor
Thermal Conductivity	0.1481 W/m-K @Temperature 20.0 °C
Melting Point	-5.30 °C
Boiling Point	163.3 °C

Optical Properties	Original Value	Comments
Refractive Index	1.396 @Wavelength 589.3 nm	n_D

Descriptive Properties
Antoine's Vapor Pressure A Parameter	17.924
Antoine's Vapor Pressure B Parameter	4130.93
Antoine's Vapor Pressure C Parameter	-70.55
Antoine's Vapor Pressure Formula	ln π_p = A - B/(T+C)	P in mmHg and T in K
CAS registry number (CARN)	107-92-3
Chemical Formula	C₄H₈O₂
Critical Compressibility (Zc)	0.295
Dipole moment (p/C.m)	5.003E-28
Dynamic Viscosity Formula	log₁₀ η=A(1/T-1/B)
Dynamic Viscosity Parameter A	640.42
Dynamic Viscosity Parameter B	321.13
Molar Heat Capacity (298K)	114.871 J/mol-K
Molar Heat Capacity of Vapor a Parameter	11.7319
Molar Heat Capacity of Vapor b Parameter	0.4134
Molar Heat Capacity of Vapor c Parameter	-0.0002428
Molar Heat Capacity of Vapor d Parameter	5.527E-08
Molar Heat Capacity of Vapor Formula	C_p = a + bT + cT² + dT³	C_p in J/mol-K
UN Number	2820

References for this datasheet.

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