Methyl Ethyl Ketone (CH 3 CH 2 COCH 3 ; 2-Butanone; MEK)

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Methyl Ethyl Ketone (CH₃CH₂COCH₃; 2-Butanone; MEK)
Categories:	Fluid; Solvent
Key Words:	CH3CH2COCH3
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Physical Properties	Metric	English	Comments

Density	0.8054 g/cc @Temperature 20.0 °C	0.02910 lb/in³ @Temperature 68.0 °F
Viscosity	0.405 cP @Temperature 25.0 °C	0.405 cP @Temperature 77.0 °F
	0.413 cP @Temperature 20.0 °C	0.413 cP @Temperature 68.0 °F	Dynamic Viscosity
Molecular Weight	72.12 g/mol	72.12 g/mol
Vapor Pressure	0.099869 bar @Temperature 20.0 °C	74.908 torr @Temperature 68.0 °F
	0.1000 bar @Temperature 21.2 °C	75.00 torr @Temperature 70.2 °F
Surface Tension	24.6 dynes/cm @Temperature 20.0 °C	24.6 dynes/cm @Temperature 68.0 °F

Chemical Properties	Metric	English	Comments
Critical Pressure	42.0699 bar	31555.0 torr
Critical Temperature	263.62 °C	506.52 °F
Critical Density	0.270 g/cc	0.00975 lb/in³
Critical Molar Volume	267 cm³/mol	16.3 in³/mol

Electrical Properties	Metric	English	Comments
Dielectric Constant	18.51 @Temperature 20.0 °C	18.51 @Temperature 68.0 °F

Thermal Properties	Metric	English	Comments
Heat of Fusion	116.3 J/g	50.05 BTU/lb	Enthalpy of fusion at normal melting point
Heat of Vaporization	434 J/g	187 BTU/lb	Enthalpy of vaporization at normal boiling temperature
Specific Heat Capacity	2.203 J/g-°C	0.5265 BTU/lb-°F
	1.402 J/g-°C @Temperature 25.0 °C	0.3351 BTU/lb-°F @Temperature 77.0 °F	Vapor
Thermal Conductivity	0.145 W/m-K @Temperature 25.0 °C	1.01 BTU-in/hr-ft²-°F @Temperature 77.0 °F
Melting Point	-86.64 °C	-124.0 °F	At atmospheric pressure (760 torr)
Boiling Point	30.0 °C	86.0 °F	at 10 torr
	79.6 °C @Pressure 0.101 MPa	175 °F @Pressure 14.7 psi

Optical Properties	Metric	English	Comments
Refractive Index	1.3788 @Temperature 20.0 °C, Wavelength 589.3 nm	1.3788 @Temperature 68.0 °F, Wavelength 589.3 nm	Na D line

Descriptive Properties
Antoine's Vapor Pressure A Parameter	16.5986
Antoine's Vapor Pressure B Parameter	3150.42
Antoine's Vapor Pressure C Parameter	-36.65
Antoine's Vapor Pressure Formula	ln π_p = A - B/(T+C)		P in mmHg and T in K
CAS registry number (CARN)	78-93-3
Chemical Formula	C₄H₈O
Critical Compressibility (Zc)	0.249
Dipole moment (p/C.m)	1.101E-27
Dynamic Viscosity Formula	log₁₀ η=A(1/T-1/B)
Dynamic Viscosity Parameter A	423.84
Dynamic Viscosity Parameter B	231.67
Henry's Law Constant (atm m³/mol)	5.59E-05
Molar Heat Capacity (298K)	101.143 J/mol-K
Molar Heat Capacity of Vapor a Parameter	10.937
Molar Heat Capacity of Vapor b Parameter	0.3557
Molar Heat Capacity of Vapor c Parameter	-0.0001899
Molar Heat Capacity of Vapor d Parameter	3.971E-08
Molar Heat Capacity of Vapor Formula	C_p = a + bT + cT² + dT³		C_p in J/mol-K
UN Number	1193
UV cut-off (nm)	330

References for this datasheet.

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VORG031 / 74542

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