4-Methyl-2-pentanol

4-Methyl-2-pentanol (IUPAC name: 4-methylpentan-2-ol) or methyl isobutyl carbinol (MIBC) is an organic chemical compound used primarily as a frother in mineral flotation and in the production of lubricant oil additives such as Zinc dithiophosphate.^[4] It is also used as a solvent, in organic synthesis, and in the manufacture of brake fluid^[5] and as a precursor to some plasticizers. It is an acetone derivative in liquid state, with limited solubility in water but generally miscible with most organic solvents.^[4]

4-Methyl-2-pentanol^[1]

Names
Preferred IUPAC name 4-Methylpentan-2-ol
Other names 4-Methyl-2-pentanol Methyl isobutyl carbinol MIBC Isobutyl methyl carbinol 2-Methyl-4-pentanol 4-Methylpentane-2-ol 1,3-Dimethylbutanol Methyl amyl alcohol Isobutyl methyl methanol
Identifiers
CAS Number	108-11-2 Y
3D model (JSmol)	Interactive image
ChEMBL	ChEMBL448896 Y
ChemSpider	7622 Y
ECHA InfoCard	100.003.229
EC Number	203-551-7
PubChem CID	7910
RTECS number	SA7350000
UNII	8U34XJK0R0 N
UN number	2053
CompTox Dashboard (EPA)	DTXSID2026781
InChI InChI=1S/C6H14O/c1-5(2)4-6(3)7/h5-7H,4H2,1-3H3 Y Key: WVYWICLMDOOCFB-UHFFFAOYSA-N Y InChI=1/C6H14O/c1-5(2)4-6(3)7/h5-7H,4H2,1-3H3 Key: WVYWICLMDOOCFB-UHFFFAOYAI
SMILES OC(C)CC(C)C
Properties
Chemical formula	C6H14O
Molar mass	102.174 g/mol
Appearance	colorless liquid
Odor	mild
Density	0.8075 g/cm3 at 20 °C
Melting point	−90 °C (−130 °F; 183 K)
Boiling point	131.6 °C (268.9 °F; 404.8 K)
Solubility in water	15 g/L
Solubility	soluble in ethanol, diethyl ether
Vapor pressure	0.698 kPa
Magnetic susceptibility (χ)	−80.4·10−6 cm3/mol
Viscosity	4.07 mPa·s
Thermochemistry
Heat capacity (C)	273.0 J·mol−1·K−1 (liquid)
Std enthalpy of formation (ΔfH⦵298)	−394.7 kJ·mol−1 (liquid)
Hazards
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H226, H335
Precautionary statements	P210, P233, P240, P241, P242, P243, P261, P271, P280, P303+P361+P353, P304+P340, P312, P370+P378, P403+P233, P403+P235, P405, P501
NFPA 704 (fire diamond)	2 2 0
Flash point	41 °C (106 °F; 314 K)
Explosive limits	1-5.5%[2]
Lethal dose or concentration (LD, LC):
LD50 (median dose)	2590 mg/kg (rat, oral)[3]
LDLo (lowest published)	1000 mg/kg (mouse, oral)[3]
LC50 (median concentration)	2000 ppm (rat, 4 hr)[3]
NIOSH (US health exposure limits):
PEL (Permissible)	TWA 25 ppm (100 mg/m3) [skin][2]
REL (Recommended)	TWA 25 ppm (100 mg/m3) ST 40 ppm (165 mg/m3) [skin][2]
IDLH (Immediate danger)	400 ppm[2]
Related compounds
Related compounds	Hexanol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Infobox references