Melting point |
-87 °C (lit.) |
Boiling point |
80 °C (lit.) |
Density |
0.805 g/mL at 25 °C (lit.) |
vapor density |
2.49 (vs air) |
vapor pressure |
71 mm Hg ( 20 °C) |
refractive index |
n20/D 1.379(lit.) |
FEMA |
2170 | 2-BUTANONE |
Flash point |
26 °F |
storage temp. |
2-8°C |
solubility |
Miscible with acetone, ethanol, benzene, ether (U.S. EPA, 1985), and many other solvents,
particularly ketones and aldehydes |
pka |
14.7 (quoted, Riddick et al., 1986) |
form |
Solution |
color |
Colorless |
Relative polarity |
0.327 |
Odor |
Sweet/sharp odor detectable at 2 to 85 ppm (mean = 16 ppm) |
PH |
pH(1+4, 25℃):6.0~7.0 |
explosive limit |
1.8-11.5%(V) |
Odor Threshold |
0.44ppm |
Odor Type |
ethereal |
Water Solubility |
290 g/L (20 ºC) |
Merck |
14,6072 |
JECFA Number |
278 |
BRN |
741880 |
Henry's Law Constant |
23.0 at 50.00 °C, 34.1 at 60.00 °C, 50.6 at 70.00 °C, 70.4 at 80.00 °C (headspace-GC, Hovorka et
al., 2002) |
Exposure limits |
TLV-TWA, PEL 590 mg/m3 (200 ppm)
(ACGIH, OSHA); STEL 885 mg/m3
(300 ppm) (ACGIH); IDLH 3000 ppm
(NIOSH). |
Dielectric constant |
18.5(20℃) |
Stability |
Stable. Highly flammable. Incompatible with oxidizing agents, bases, strong reducing agents. Protect from moisture. |
LogP |
0.3 at 40℃ |
CAS DataBase Reference |
78-93-3(CAS DataBase Reference) |
NIST Chemistry Reference |
2-Butanone(78-93-3) |
EPA Substance Registry System |
Methyl ethyl ketone (78-93-3) |