Methyl isobutyl ketone

Methyl isobutyl ketone
Names
	Preferred IUPAC name 4-Methylpentan-2-one
	Other names 4-Methyl-2-pentanone, Isopropylacetone, Hexone, Isobutyl methyl ketone, 2-Methylpropyl methyl ketone, 4-Methyl-2-oxopentane, MIK, Isobutylmethyl ketone, MIBK, Isohexanone
Identifiers
CAS Number	108-10-1 ;
3D model (JSmol)	Interactive image;
Abbreviations	MIBK
ChEBI	CHEBI:82344;
ChEMBL	ChEMBL285323;
ChemSpider	7621 ;
ECHA InfoCard	100.003.228
EC Number	203-550-1;
KEGG	C19263 ;
PubChem CID	7909;
RTECS number	SA9275000;
UNII	U5T7B88CNP ;
UN number	1245
CompTox Dashboard (EPA)	DTXSID5021889 ;
	InChI InChI=1S/C6H12O/c1-5(2)4-6(3)7/h5H,4H2,1-3H3 Key: NTIZESTWPVYFNL-UHFFFAOYSA-N ; InChI=1/C6H12O/c1-5(2)4-6(3)7/h5H,4H2,1-3H3 Key: NTIZESTWPVYFNL-UHFFFAOYAQ;
	SMILES CC(C)CC(=O)C;
Properties
Chemical formula	C6H12O
Molar mass	100.16 g/mol
Appearance	colorless liquid
Odor	pleasant
Density	0.802 g/mL, liquid
Melting point	−84.7 °C (−120.5 °F; 188.5 K)
Boiling point	117 to 118 °C (243 to 244 °F; 390 to 391 K)
Solubility in water	1.91 g/100 mL (20 °C)
Vapor pressure	16 mmHg (20 °C)
Magnetic susceptibility (χ)	−70.05·10−6 cm3/mol
Refractive index (nD)	1.3958
Viscosity	0.58 cP at 20.0 °C
Structure
Dipole moment	2.8 D
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H225, H319, H332, H335, H351
Precautionary statements	P210, P233, P240, P241, P242, P243, P261, P264, P271, P280, P303+P361+P353, P304+P312, P304+P340, P305+P351+P338, P312, P337+P313, P370+P378, P403+P233, P403+P235, P405, P501
NFPA 704 (fire diamond)	2 3
Flash point	14 °C (57 °F; 287 K)
Autoignition; temperature	449 °C (840 °F; 722 K)
Explosive limits	1.2–8.0% (93 °C)
	NIOSH (US health exposure limits):
PEL (Permissible)	TWA 100 ppm (410 mg/m3)
REL (Recommended)	TWA 50 ppm (205 mg/m3) ST 75 ppm (300 mg/m3)
IDLH (Immediate danger)	500 ppm
Related compounds
Related ketones	Methyl isopropyl ketone; 2-Pentanone; Diisobutyl ketone
Related compounds	2-Methylpentan-4-ol
	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

Methyl isobutyl ketone (MIBK, 4-methylpentan-2-one) is an organic compound with the condensed chemical formula (CH₃)₂CHCH₂C(O)CH₃. This ketone is a colourless liquid that is used as a solvent for gums, resins, paints, varnishes, lacquers, and nitrocellulose.