2-Hexanone
Names | |
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IUPAC name
Hexan-2-one | |
Other names
Methyl butyl ketone; Methyl n-butyl ketone; MNBK; Butyl methyl ketone; MBK; n-Butyl methyl ketone; Propylacetone | |
Identifiers | |
591-78-6 | |
ChEMBL | ChEMBL195861 |
ChemSpider | 11095 |
EC Number | 209-731-1 |
Jmol interactive 3D | Image |
PubChem | 154889 |
RTECS number | MP1400000 |
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Properties | |
C6H12O | |
Molar mass | 100.16 g·mol−1 |
Appearance | Colorless to light yellow liquid |
Odor | sharp, acetone-like[3] |
Density | 0.8113 g/cm³ |
Melting point | −55.5 °C (−67.9 °F; 217.7 K) |
Boiling point | 127.6 °C (261.7 °F; 400.8 K) |
1.4% (14 g/L) | |
Vapor pressure | 1.3 kPa (20 °C) |
Refractive index (nD) |
1.403 (20 °C) |
Viscosity | 0.63 mPa·s (20 °C) |
Hazards | |
EU classification (DSD) |
T |
R-phrases | R10, R48, R23, R62, R67 |
NFPA 704 | |
Flash point | 25 °C (77 °F; 298 K) |
423 °C (793 °F; 696 K) | |
Explosive limits | ?-8%[3] |
Lethal dose or concentration (LD, LC): | |
LD50 (Median dose) |
2590 mg/kg (oral, rat) 2430 mg/kg (oral, mouse) 4860 mg/kg (dermal, rabbit) 2590 mg/kg (oral, guinea pig)[4] |
LDLo (Lowest published) |
914 mg/kg (rat, oral)[4] |
LC50 (Median concentration) |
8000 ppm (rat, 4 hr)[4] |
LCLo (Lowest published) |
20,000 ppm (guinea pig, 70 min)[4] |
US health exposure limits (NIOSH): | |
PEL (Permissible) |
TWA 100 ppm (410 mg/m3)[3] |
REL (Recommended) |
TWA 1 ppm (4 mg/m3)[3] |
IDLH (Immediate danger |
1600 ppm[3] |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
verify (what is ?) | |
Infobox references | |
2-Hexanone (methyl butyl ketone, MBK) is a ketone used as a general solvent and in paints. It dissolves cellulose nitrate, vinyl polymers and copolymers, and natural and synthetic resins. It is recommended as a solvent because it is photochemically inactive;[5] however it has a very low safe threshold limit value (MAK value). 2-Hexanone is absorbed through the lungs, orally and dermally and its metabolite, 2,5-hexanedione, is neurotoxic.[6] Animal tests have shown that the neurotoxic effect of 2-hexanone may be potentiated by simultaneous administration of 2-butanone (methyl ethyl ketone, MEK).[7]
References
- ↑ Merck Index, 11th Edition, 5955.
- ↑ CRC Handbook of Chemistry and Physics, 75th ed. (1995)
- 1 2 3 4 5 "NIOSH Pocket Guide to Chemical Hazards #0325". National Institute for Occupational Safety and Health (NIOSH).
- 1 2 3 4 "2-Hexanone". Immediately Dangerous to Life and Health. National Institute for Occupational Safety and Health (NIOSH).
- ↑ Dieter Stoye (2007), "Solvents", Ullmann's Encyclopedia of Industrial Chemistry (7th ed.), Wiley, p. 56
- ↑ Jerrold B. Leikin; Frank P. Paloucek (2008), "2-Hexanone", Poisoning and Toxicology Handbook (4th ed.), Informa, p. 737
- ↑ Wilhelm Neier; Günter Strehlke (2007), "2-Butanone", Ullmann's Encyclopedia of Industrial Chemistry (7th ed.), Wiley, p. 6
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