Acetic Acid (CH 3 CO 2 H; Ethanoic Acid)

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Acetic Acid (CH₃CO₂H; Ethanoic Acid)
Categories:	Fluid; Solvent
Key Words:	CH3CO2H
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Physical Properties	Original Value	Comments

Density	1.0492 g/cc @Temperature 20.0 °C
Viscosity	1.056 cP @Temperature 25.0 °C
Molecular Weight	60.05 g/mol
Vapor Pressure	0.09869 atm @Temperature 55.9 °C
	11.325 torr @Temperature 20.0 °C
Surface Tension	27.1 dynes/cm	at 25°C; Gamma

Chemical Properties	Original Value	Comments
Critical Pressure	57.103 atm
Critical Temperature	319.55 °C
Critical Density	0.351 g/cc
Critical Molar Volume	171 cm³/mol

Electrical Properties	Original Value	Comments
Dielectric Constant	6.17 @Temperature 20.0 °C

Thermal Properties	Original Value	Comments
Heat of Fusion	195.3 J/g	Enthalpy of fusion at normal melting point
Heat of Vaporization	394.3 J/g
	394.7 J/g	Enthalpy of vaporization at normal boiling temperature
Specific Heat Capacity	2.05 J/g-°C
	1.108 J/g-°C @Temperature 25.0 °C	Vapor
Thermal Conductivity	0.158 W/m-K @Temperature 25.0 °C
Melting Point	16.64 °C	At atmospheric pressure (760 torr)
	16.65 °C
Boiling Point	17.0 °C	at 10 torr
	117.9 °C @Pressure 0.101 MPa

Optical Properties	Original Value	Comments
Refractive Index	1.3716 @Temperature 20.0 °C, Wavelength 589.3 nm	Na D line

Descriptive Properties
Antoine's Vapor Pressure A Parameter	16.808
Antoine's Vapor Pressure B Parameter	3405.57
Antoine's Vapor Pressure C Parameter	-56.34
Antoine's Vapor Pressure Formula	ln π_p = A - B/(T+C)	P in mmHg and T in K
CAS registry number (CARN)	64-19-7
Chemical Formula	CH₃COOH
Critical Compressibility (Zc)	0.2
Dipole moment (p/C.m)	4.336E-28
Dynamic Viscosity Formula	log₁₀ η=A(1/T-1/B)
Dynamic Viscosity Parameter A	600.94
Dynamic Viscosity Parameter B	306.21
Henry's Law Constant (atm m³/mol)	4.42E-05
Molar Heat Capacity (298K)	66.508 J/mol-K
Molar Heat Capacity of Vapor a Parameter	4.8367
Molar Heat Capacity of Vapor b Parameter	0.2547
Molar Heat Capacity of Vapor c Parameter	-0.0001752
Molar Heat Capacity of Vapor d Parameter	4.945E-08
Molar Heat Capacity of Vapor Formula	C_p = a + bT + cT² + dT³	C_p in J/mol-K
UV cut-off (nm)	260

References for this datasheet.

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